A kind of fragrant rice foliar fertilizer and its application in fragrant rice cultivation

Abstract

The present invention belongs to the field of fragrant rice planting technology, and specifically relates to a fragrant rice foliar fertilizer and its application in fragrant rice cultivation. The present invention provides a fragrant rice foliar fertilizer, including calcium acetate, pyrroline and acetyl coenzyme A, which is used in the cultivation of fragrant rice, and further combined with ultrasonic treatment of rice seedlings and the application of calcium bicarbonate, the calcium content, aroma and yield of the fragrant rice can be synergistically improved, and the calcium content is more than 1.5 times that of conventional ordinary rice, the aroma 2-acetyl-1-pyrroline (2-AP) content is increased by more than 20%, and the yield is increased by more than 13%; this is conducive to the development of traditional rice industry towards functionalization and high-endization, and meets the market demand for people's strong fragrance and functional fragrant rice.

Description

Technical Field

[0001] The invention belongs to the technical field of fragrant rice planting, and more specifically, relates to a fragrant rice foliar fertilizer and application thereof in fragrant rice cultivation. Background Art

[0002] Calcium is an essential element for the human body. For the human body, there is Ca in muscles, nerves, body fluids and bones. 2+ Calcium accounts for about 1.5-2.0% of the human body weight, which is not much, but it plays an indispensable role in regulating the normal function of all human cells. Because it participates in the body's metabolism, calcium must be supplemented every day. If the calcium content in the body is insufficient, it will affect the growth and health of the human body. Rice is one of the staple foods of Chinese consumers. Since ancient times, people have mainly relied on planting rice to produce rice to supplement nutrition and calcium. However, in addition to providing energy and protein, conventional rice does not have many other nutrients, especially calcium, which is very low and far from meeting people's normal needs.

[0003] Fragrant rice is a treasure among rice. It has long been loved by Asians for its fragrant and delicious characteristics. Although the price of fragrant rice is usually 2 to 3 times that of ordinary non-fragrant rice in the domestic and foreign rice markets, the consumption of fragrant rice in the world is still increasing year by year. With the development of my country's commodity economy, the improvement of residents' dietary structure and the improvement of quality of life, fragrant rice, as a fine product among commercial rice, is becoming more and more popular among consumers. In order to meet market demand, aroma traits have become an important indicator for measuring rice quality. Research on the aroma components of fragrant rice shows that whether it is basmati fragrant rice or jasmine fragrant rice, the most important component of its aroma is 2-acetyl-1-pyrroline (2-AP). At present, most of the famous brand rice with high sales price and good rice quality in the Chinese market is fragrant rice or mixed with fragrant rice. Fragrant rice is not only edible, but also has high economic value. The cultivation technology of existing calcium-rich rice mostly provides spraying calcium supplementation foliar fertilizer during cultivation, such as Chinese patent application CN1833486A discloses a cultivation method of calcium-rich rice, the method is to spray calcium solution evenly on the leaves in the rice seedling stage, the ratio of calcium agent to clear water is 300 grams-1000 grams of calcium agent to 1000 kilograms of clear water, and then in the tillering stage, panicle differentiation stage, heading stage, and early stage of filling, respectively, 0.3-1.0 grams per liter of calcium solution is used for foliar spraying, which improves the calcium content in rice, but this cultivation method only increases the calcium content in rice. At present, there is a lack of a coordinated calcium-rich and fragrant rice cultivation method, which is difficult to produce calcium-rich fragrant rice, and can not meet people's demand for high-end fragrant rice. Therefore, studying the new cultivation method of calcium-rich fragrant rice has become an urgent need for high-end fragrant rice production. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects and shortcomings of the prior art, such as lack of a cultivation method for fragrant rice that is synergistically rich in calcium and fragrance, difficulty in producing calcium-rich and fragrant fragrant rice, and failure to meet people's demand for high-end fragrant rice, and provide a fragrant rice foliar fertilizer that can significantly increase the calcium content and fragrance of fragrant rice.

[0005] Another object of the present invention is to provide application of the fragrant rice foliar fertilizer in crop cultivation.

[0006] Another object of the present invention is to provide a method for cultivating calcium-rich and fragrant rice.

[0007] The above-mentioned purpose of the present invention is achieved through the following technical solutions:

[0008] A fragrant rice foliar fertilizer comprises calcium acetate, pyrroline and acetyl coenzyme A.

[0009] Preferably, the mass ratio of calcium acetate, pyrroline and acetyl-CoA is 5-6:2-3:2-3.

[0010] More preferably, the mass ratio of calcium acetate, pyrroline and acetyl-CoA is 6:2:2.

[0011] An application of the fragrant rice foliar fertilizer in crop cultivation.

[0012] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0013] S1. Soaking and germinating the fragrant rice seeds until the buds are broken and further cultivated to obtain seedlings;

[0014] S2. When the seedlings have 3 leaves and 1 heart, the seedlings are treated with ultrasound on the day of transplanting before transplanting;

[0015] S3. Using special fertilizer for fragrant rice and calcium bicarbonate as base fertilizer and tillering fertilizer, using the fragrant rice foliar fertilizer as ear-breaking fertilizer; wherein the ear-breaking fertilizer is a fertilizer applied during the ear-breaking period.

[0016] Specifically, the base fertilizer is the fertilizer applied to the fragrant rice before sowing or transplanting, also known as base fertilizer.

[0017] Specifically, the tillering fertilizer is a topdressing fertilizer applied from the time the seedlings are transplanted to before the young ears begin to differentiate.

[0018] Specifically, the tillers occur on the tillering nodes at the base of the rice stem. The tillers that arise from the main stem are called first tillers, and the tillers that arise from the first tillers are called second tillers, and so on.

[0019] Furthermore, the cultivation method also includes tillage, land preparation, irrigation, weeding and pest control.

[0020] The present invention has found through a large number of experiments that ultrasonic treatment of rice seedlings can improve the quality of rice seedlings, promote tillering, improve photosynthetic efficiency, and increase dry matter accumulation, thereby achieving the effect of increasing rice yield and aroma; further, ultrasonic treatment of rice seedlings combined with application of calcium fertilizer (including calcium bicarbonate and fragrant rice foliar fertilizer) can promote the improvement of rice aroma and calcium content, and the calcium in the calcium fertilizer, as a trace element, is beneficial to the synthesis and accumulation of fragrant rice aroma substances.

[0021] Preferably, 180-230 g / mu of the fragrant rice foliar fertilizer is applied.

[0022] More preferably, 200 g / mu of the fragrant rice foliar fertilizer is applied.

[0023] Preferably, when the fragrant rice foliar fertilizer is applied, the mass ratio of the fragrant rice foliar fertilizer to water is 1:60-80.

[0024] Preferably, when the fragrant rice foliar fertilizer is applied, the mass ratio of the fragrant rice foliar fertilizer to water is 1:75.

[0025] Preferably, the frequency of the ultrasonic treatment is 20 to 40 kHz.

[0026] More preferably, the frequency of the ultrasonic treatment is 20 kHz.

[0027] Preferably, the ultrasonic treatment time is 2 to 4 minutes.

[0028] More preferably, the ultrasonic treatment time is 2 min.

[0029] Specifically, the special fertilizer for fragrant rice consists of 10% organic fertilizer, 26% urea, 50% superphosphate, 12% potassium chloride, 1.9% zinc sulfate and 0.1% lanthanum chloride.

[0030] Preferably, the application amount of the special fertilizer for fragrant rice is 20-28 kg / mu.

[0031] More preferably, the application amount of the special fertilizer for fragrant rice is 25 kg / mu.

[0032] Preferably, when the special fertilizer for fragrant rice is applied, the mixing mass ratio of the special fertilizer for fragrant rice to water is 1:42-70.

[0033] More preferably, when the special fertilizer for fragrant rice is applied, the mixing mass ratio of the special fertilizer for fragrant rice to water is 1:50.

[0034] Preferably, the application amount of calcium bicarbonate is 8 to 12 kg / mu.

[0035] More preferably, the application amount of calcium bicarbonate is 10 kg / mu.

[0036] Preferably, the aromatic rice variety is any one or more of Meixiangzhan 2, 19xiang, and Nanjingxiangzhan.

[0037] The invention has the following beneficial effects: the invention provides a fragrant rice foliar fertilizer, which is applied to fragrant rice cultivation, and combined with ultrasonic treatment of rice seedlings and application of calcium bicarbonate, the calcium content, aroma and yield of rice are synergistically improved, and the calcium content is more than 1.5 times that of conventional ordinary rice, the content of fragrant 2-acetyl-1-pyrroline (2-AP) is increased by more than 20%, and the yield is increased by more than 13%, which is conducive to the functional and high-end development of the traditional rice industry and meets the market demand for strong-flavored and functional fragrant rice. DETAILED DESCRIPTION

[0038] The present invention is further described below by specific examples, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0039] Unless otherwise specified, the reagents and materials used in the following examples are commercially available.

[0040] The conventional steps of cultivating fragrant rice in the embodiments and comparative examples are common processes in the prior art, for example:

[0041] 1. Variety selection

[0042] Select conventional aromatic rice or hybrid aromatic rice varieties with high quality, high yield, suitable growth period and strong disease resistance. Aromatic rice seeds should comply with the standard of GB4404.1-2008 "Grain Crop Seeds Part 1: Cereals".

[0043] 2. Seedling raising technology

[0044] 2.1 Land preparation

[0045] The seedling field is selected in a wind-sheltered, sunny, loose, fertile, slightly acidic field with convenient water source for irrigation and drainage. It is carried out in sequence of dry farming, water preparation, leveling, and compartment division. The compartment width is about 1.3m, the ditch width is about 30cm, and the ditch depth is about 10cm.

[0046] 2.2 Seeding

[0047] 2.2.1 Selection of seedling trays

[0048] 675-750 pieces of 561-hole plastic trays are selected per hectare, referring to NY / T390-2000 "Plastic Trays for Raising Rice Seedlings".

[0049] 2.2.2 Sowing period

[0050] According to the growth characteristics of the variety, early-season sowing is done from the end of February to early March, and late-season sowing is done in early to mid-July.

[0051] 2.2.3 Seeding rate

[0052] The seed rate for conventional fragrant rice per hectare of field is 37.5-45.0kg, and that for hybrid fragrant rice is 18.75-22.5kg.

[0053] 2.2.4 Seed disinfection and soaking

[0054] Soak the seeds in 200 times diluted 35% bacon-ling for disinfection, 24-36 hours for early-season conventional fragrant rice and 18-24 hours for hybrid fragrant rice, 12-24 hours for late-season conventional fragrant rice and 8-12 hours for hybrid fragrant rice. After the rice seeds are disinfected and soaked, wash them with clean water and germinate them directly.

[0055] 2.2.5 Germination

[0056] The main technology of germination is "high temperature for breast breaking and appropriate temperature for germination". High temperature means that the seeds will break the breast and show white color within 1-2 days at 30-35℃; appropriate temperature for germination means that after the seeds break the breast, the temperature is lowered to 25-30℃, and after 12-14 hours, the buds will grow to about 2mm, and then they can be sown.

[0057] 2.3 Rice field management

[0058] 2.3.1 Water Management

[0059] During the budding period, from sowing to the time when the first leaf fully unfolds, water half of the ditch on sunny days, and drain the water on cloudy days to keep the bed surface free of water. During the early cropping film-covering period, when the temperature is high on sunny days, keep ventilation at both ends, and cover the film on cloudy days with low temperatures. Before removing the film, harden the seedlings first, and water the bed surface on a sunny day before removing the film. When the early cropping has 2.5 to 3 leaves, choose a sunny day to remove the film. After removing the film, fill the bed surface with water until it soaks the bed surface, or fill it back with water after it dries up naturally. During the late cropping period, there should be no water layer or waterlogging on the bed surface during the day to prevent the strong sunlight from causing the hot water to burn the buds; during the 2-leaf stage, there can be a water layer soaking the bed surface day and night, and fill it back with water after it dries up, "alternating between dry and wet".

[0060] 2.3.2 Pest, weed and rodent control

[0061] Chemical weeding or manual weeding is carried out at the 2-leaf 1-heart stage; when the seedlings are found to be withered, yellow or rotten, 1.5 mL of transplanting spirit (containing 10% meconazole and 10% rice blast) is diluted with 1.5 kg of water and sprayed on the seedbed per square meter of seedlings; before transplanting, the seedlings are given a "marriage medicine" once, using 1500 g of 20% tricyclazole + 4500 g of 18% dimethoate diluted with 900 kg of water per hectare for spraying to prevent and control diseases and insect pests such as rice blast and yellow stem borer. At the same time, we must do a good job in preventing and killing rats, mainly using poison bait to lure and kill, and the drugs are sodium dichlorvos and bromadiolone.

[0062] 3. Honda Management

[0063] 3.1 Land preparation and basal fertilizer application

[0064] The field should be finely leveled. By plowing, the root stubble and other debris should be buried in the soil layer; the harrowing should be flat, and the height difference in the same field should not exceed 3.3cm. After harrowing, the surface of the field should be soft and hard, and there should be mud on the surface of the field when transplanting (throwing) seedlings to improve the transplanting (throwing) quality. For medium-fertile fields, the target yield is 7500kg / hm 2 At this time, 600-750kg of "special fertilizer for fragrant rice" (derived from the national invention patent, its application number is 201010519436.3, the special fertilizer for fragrant rice is made of organic fertilizer, urea, superphosphate, potassium chloride, zinc sulfate and lanthanum chloride mixed and granulated, containing 10% organic fertilizer, 26% urea, 50% superphosphate, 12% potassium chloride, 1.9% zinc sulfate and 0.1% lanthanum chloride) can be applied per hectare, or 300kg of biological organic fertilizer, 150kg of urea, 375kg of superphosphate, 120kg of potassium chloride and 30kg of zinc chloride can be mixed and applied as basal fertilizer, and the seedlings can be transplanted (thrown) after 1d of slurry settling after harrowing the field.

[0065] 3.2 Planting (throwing) seedlings

[0066] The density of seedlings is determined based on factors such as paddy field fertility and variety characteristics. Hybrid fragrant rice is planted (seeded) in 225,000-300,000 holes per hectare, and conventional fragrant rice is planted (seeded) in 250,000-330,000 holes per hectare. The seedlings should be planted shallowly, not more than 3 cm, and seedlings should be thrown evenly. Seedling throwing technology refers to NY / T 1607-2008 "Technical Regulations for Rice Seedling Throwing".

[0067] 3.3 Topdressing

[0068] 3.3.1 Tillering fertilizer

[0069] 6-7 days after transplanting (throwing) the seedlings, apply 450 kg of special fertilizer for fragrant rice, or 150 kg of urea and 105 kg of potassium chloride per hectare.

[0070] 3.3.2 Granular fertilizer

[0071] During the heading stage, 3.0 kg of fragrant rice flavor enhancer (derived from the national invention patent, patent number is 201010518779.8, which is a mixture of "GA3", proline, zinc chloride and lanthanum chloride, containing 1% "GA3", 5% proline, 93% zinc chloride and 1% lanthanum chloride) can be added to 750 kg of water for foliar spraying; or 30 g of "GA3", 15 g of proline, 2790 g of zinc chloride and 37.5 g of lanthanum chloride can be added to 750 kg of water to prepare a solution for foliar spraying.

[0072] 3.4 Irrigation

[0073] After transplanting (throwing) the seedlings, keep shallow water for tillering in the early stage, and drain the field after the seedlings are enough. Expose more and dry less to control ineffective tillering, enhance the disease resistance and lodging resistance of the plants, and reduce the occurrence of diseases and insect pests. Irrigate with 3-4cm of water at the beginning of young spike differentiation, and keep shallow and wet alternating from the booting stage to the break stage, with wet as the main method. After heading, keep a shallow water layer to facilitate filling and firming. Intermittent irrigation is adopted in the waxy stage, alternating dry and wet to keep the field moist. Cut off water 5-6 days before harvest, and avoid cutting off water too early in the late stage. For irrigation water, refer to NY5116-2002 "Environmental Conditions of Pollution-free Food Rice Production Areas".

[0074] 3.5 Disease, insect, rodent and weed control

[0075] 3.5.1 Pest and disease control

[0076] During the tillering stage, 2.4 kg of 45% Mantanghong fertilizer was used per hectare to prevent and control rice leaf roller, yellow stem borer, mud borer, etc.; during the booting stage, 0.6 kg of 16% Yanbingqing + 1.5 kg of 20% tricyclazole + 4.5 kg of 18% dichlorvos was diluted with 125 kg of water and sprayed per hectare to prevent and control sheath blight, rice blast, rice leaf roller and other diseases and insect pests; during the rupture stage, 3.75 kg of 5% Jinggangmycin + 22% blast was used per hectare. 0.525kg of Boke + 4.5kg of 18% dimethoate + 1.8kg of 20% isothiazine diluted with 1500kg of water for spraying to prevent and control sheath blight, rice blast, rice planthoppers, rice leaf rollers, and yellow stem borers; 3.75kg of 15% Jinggangmycin + 0.525kg of 22% Boke + 1.8kg of 20% isothiazine diluted with 1500kg of water for spraying per hectare at the heading stage to prevent and control sheath blight, rice blast, and rice planthoppers. For pest control, refer to NY / T 5117-2002 "Production of Pollution-free Food Rice".

[0077] 3.5.2 Control of Golden Apple Snails

[0078] Before transplanting (casting) seedlings, apply 10.5 kg of 6% MetA snail killer per hectare mixed with 300 kg of fine sand or 75 kg of crushed tea seed residue.

[0079] 3.5.3 Rodent Pest Control

[0080] During the field drying period, rat prevention should be carried out in a timely manner. You can choose to place poison baits at multiple points in the field to lure and kill the rats or use rat cages to catch them.

[0081] 3.5.4 Weed control

[0082] 6-7 days after transplanting (casting) the seedlings, use herbicides in combination with fertilization, use 1500-1875mL of 50% butachlor EC or 105-150g of 1% oxazolidinone WP per hectare, mix with fine soil or fertilizer and spread. After application, maintain a 4-5cm water layer for 3-4 days.

[0083] 4. Harvest and storage

[0084] The fragrant rice is harvested promptly after it matures. Different varieties are harvested separately. When the rice is dried to a moisture content of 13%-14%, it is best to store it separately at low temperature.

[0085] Example 1 A method for cultivating calcium-rich and fragrant rice

[0086] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0087] S1. Select Meixiangzhan No. 2 as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate them using the seedling medium to obtain a blanket seedling in a pot;

[0088] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0089] S3. For base fertilizer and tillering fertilizer, 25 kg of fragrant rice fertilizer plus 10 kg of calcium bicarbonate were applied per mu, diluted with 1250 kg of water, mixed evenly and sprayed; during the rice ear breaking period, fragrant rice foliar fertilizer composed of calcium acetate, pyrroline and acetyl coenzyme A (mass ratio of 6:2:2) was sprayed, 200 g per mu, diluted with 15 kg of water, mixed evenly and sprayed;

[0090] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0091] Example 2 A method for cultivating calcium-rich and fragrant rice

[0092] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0093] S1. Select 19 fragrant rice seeds as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate the seedlings using the seedling raising matrix to obtain a blanket seedling pot;

[0094] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0095] S3. For base fertilizer and tillering fertilizer, 25 kg of fragrant rice fertilizer plus 10 kg of calcium bicarbonate were applied per mu, diluted with 1250 kg of water, mixed evenly and sprayed; during the rice ear breaking period, fragrant rice foliar fertilizer composed of calcium acetate, pyrroline and acetyl coenzyme A (mass ratio of 6:2:2) was sprayed, 200 g per mu, diluted with 15 kg of water, mixed evenly and sprayed;

[0096] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0097] Example 3 A method for cultivating calcium-rich and fragrant rice

[0098] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0099] S1. Select Nanjing Xiangzhan as the cultivation object, soak the fragrant rice seeds for germination, until the chest is broken to obtain buds, and further cultivate them using seedling substrate to obtain a blanket seedling in a pot;

[0100] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0101] S3. For base fertilizer and tillering fertilizer, 25 kg of fragrant rice fertilizer plus 10 kg of calcium bicarbonate were applied per mu, diluted with 1250 kg of water, mixed evenly and sprayed; during the rice ear breaking period, fragrant rice foliar fertilizer composed of calcium acetate, pyrroline and acetyl coenzyme A (mass ratio of 6:2:2) was sprayed, 200 g per mu, diluted with 15 kg of water, mixed evenly and sprayed;

[0102] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0103] Example 4 A method for cultivating calcium-rich and fragrant rice

[0104] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0105] S1. Select Meixiangzhan No. 2 as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate them using the seedling medium to obtain a blanket seedling in a pot;

[0106] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 30kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0107] S3. For base fertilizer and tillering fertilizer, 20 kg of special fertilizer for fragrant rice plus 12 kg of calcium bicarbonate were applied per mu, diluted with 1200 kg of water, mixed evenly and sprayed; during the rice ear bursting period, fragrant rice foliar fertilizer composed of calcium acetate, pyrroline and acetyl coenzyme A (mass ratio of 5:2:2) was sprayed, 230 g per mu, diluted with 18 kg of water, mixed evenly and sprayed;

[0108] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0109] Example 5 A method for cultivating calcium-rich and fragrant rice

[0110] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0111] S1. Select Meixiangzhan No. 2 as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate them using the seedling medium to obtain a blanket seedling in a pot;

[0112] S2. When the seedlings have 3 leaves and 1 heart, the seedlings are treated with 40kHz mixed-frequency ultrasound for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0113] S3. For base fertilizer and tillering fertilizer, 23 kg of fragrant rice fertilizer plus 11 kg of calcium bicarbonate were applied per mu, diluted with 1035 kg of water, mixed evenly and sprayed; during the rice ear opening period, fragrant rice foliar fertilizer consisting of calcium acetate, pyrroline and acetyl coenzyme A (mass ratio of 5:2:3) was sprayed, 200 g per mu, diluted with 15 kg of water, mixed evenly and sprayed;

[0114] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0115] Example 6 A method for cultivating calcium-rich and fragrant rice

[0116] A method for cultivating calcium-rich and fragrant rice comprises the following steps:

[0117] S1. Select Meixiangzhan No. 2 as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate them using the seedling medium to obtain a blanket seedling in a pot;

[0118] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 4 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0119] S3. For base fertilizer and tillering fertilizer, 28 kg of fragrant rice fertilizer plus 12 kg of calcium bicarbonate were applied per mu, diluted with 1,900 kg of water, mixed evenly and sprayed; during the rice ear bursting period, fragrant rice foliar fertilizer composed of calcium acetate, pyrroline and acetyl coenzyme A (mass ratio of 6:3:3) was sprayed, 180 g per mu, diluted with 11 kg of water, mixed evenly and sprayed;

[0120] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0121] Comparative Example 1 A method for cultivating fragrant rice

[0122] A method for cultivating fragrant rice comprises the following steps:

[0123] S1. Select Meixiangzhan No. 2 as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate them using the seedling medium to obtain a blanket seedling in a pot;

[0124] S2. When the seedlings have 3 leaves and 1 heart, a rice seedling transplanter is used for transplanting;

[0125] S3. Base fertilizer and tillering fertilizer were applied per acre of fragrant rice fertilizer 25 kg, 1250 kg of water, mixed and sprayed; rice ears were sprayed with the same amount of water as in Example 1 during the break period;

[0126] S4. Field tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0127] The main steps of this embodiment differ from those of Example 1 in that no ultrasonic wave is used to treat the rice seedlings, no calcium bicarbonate is applied as base fertilizer and tillering fertilizer, and no fragrant rice foliar fertilizer is applied during the rice ear breaking period.

[0128] Comparative Example 2 A method for cultivating fragrant rice

[0129] A method for cultivating fragrant rice comprises the following steps:

[0130] S1. Select 19 fragrant rice seeds as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate the seedlings using the seedling raising matrix to obtain a blanket seedling pot;

[0131] S2. When the seedlings have 3 leaves and 1 heart, a rice seedling transplanter is used for transplanting;

[0132] S3. Base fertilizer and tillering fertilizer were applied per acre of fragrant rice fertilizer 25 kg, 1250 kg of water, mixed and sprayed; rice ears were sprayed with the same amount of water as in Example 1 during the break period;

[0133] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0134] The difference between this embodiment and comparative example 1 is that the selected fragrant rice variety is 19 fragrant.

[0135] Comparative Example 3 A method for cultivating fragrant rice

[0136] A method for cultivating fragrant rice comprises the following steps:

[0137] S1. Select Nanjing Xiangzhan as the cultivation object, soak the fragrant rice seeds for germination, until the chest is broken to obtain buds, and further cultivate them using seedling substrate to obtain a blanket seedling in a pot;

[0138] S2. When the seedlings have 3 leaves and 1 heart, a rice seedling transplanter is used for transplanting;

[0139] S3. Base fertilizer and tillering fertilizer were applied per acre of fragrant rice fertilizer 25 kg, 1250 kg of water, mixed and sprayed; rice ears were sprayed with the same amount of water as in Example 1 during the break period;

[0140] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0141] The difference between this embodiment and Comparative Example 1 is that the fragrant rice variety selected is Nanjing Xiangzhan.

[0142] Comparative Example 4 A method for cultivating fragrant rice

[0143] A method for cultivating fragrant rice comprises the following steps:

[0144] S1. Select Meixiangzhan No. 2 as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate them using the seedling medium to obtain a blanket seedling in a pot;

[0145] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0146] S3. Base fertilizer and tillering fertilizer were applied per acre of fragrant rice fertilizer 25 kg, 1250 kg of water, mixed and sprayed; rice ears were sprayed with the same amount of water as in Example 1 during the break period;

[0147] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0148] The difference between this embodiment and Example 1 is that calcium bicarbonate is not applied during the base fertilizer and tillering stage, and fragrant rice foliar fertilizer is not applied during the rice ear breaking stage.

[0149] Comparative Example 5 A method for cultivating fragrant rice

[0150] A method for cultivating fragrant rice comprises the following steps:

[0151] S1. Select 19 fragrant rice seeds as the cultivation object, soak the fragrant rice seeds for germination, until the buds are broken, and further cultivate the seedlings using the seedling raising matrix to obtain a blanket seedling pot;

[0152] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0153] S3. Base fertilizer and tillering fertilizer were applied per acre of fragrant rice fertilizer 25 kg, 1250 kg of water, mixed and sprayed; rice ears were sprayed with the same amount of water as in Example 1 during the break period;

[0154] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0155] The difference of the comparative example 4 of the present embodiment is that the fragrant rice variety selected is 19 fragrant.

[0156] Comparative Example 6 A method for cultivating fragrant rice

[0157] A method for cultivating fragrant rice comprises the following steps:

[0158] S1. Select Nanjing Xiangzhan as the cultivation object, soak the fragrant rice seeds for germination, until the chest is broken to obtain buds, and further cultivate them using seedling substrate to obtain a blanket seedling in a pot;

[0159] S2. When the rice seedlings have 3 leaves and 1 heart, the rice seedlings are treated with 20kHz mixed-frequency ultrasonic waves for 2 minutes on the day of transplanting, and then transplanted using a rice seedling transplanter;

[0160] S3. Base fertilizer and tillering fertilizer were applied per acre of fragrant rice fertilizer 25 kg, 1250 kg of water, mixed and sprayed; rice ears were sprayed with the same amount of water as in Example 1 during the break period;

[0161] S4. Tillage, land preparation, irrigation, weeding and pest control, as well as harvesting and storage are managed in the usual manner.

[0162] The difference between this embodiment and Comparative Example 4 is that the fragrant rice variety selected is Nanjing Xiangzhan.

[0163] Test Example Determination of aroma, yield and calcium content of aromatic rice

[0164] Referring to the method in the literature (Huang Zhonglin, Tang Xiangru, Wang Yuliang, Chen Mujiao, Zhao Zhengkun, Duan Meiyang, Pan Shenggang. Effects of aroma-enhancing cultivation on aroma and yield of fragrant rice and its related physiological mechanisms [J]. Chinese Agricultural Science, 2012, 45(06): 1054-1065.), the fragrant rice cultivated in Examples 1 to 3 and Comparative Examples 1 to 6 was subjected to the determination of 2-acetyl-1-pyrroline (2-AP) and yield. Referring to the method in the literature (E Shengzhe, Yuan Jichao, Ding Zhiyong, Yao Fengjuan, Yu Xiaoping, Luo Fuxiang. Effects of nitrogen, phosphorus and potassium fertilizers on the content of iron, zinc, copper, manganese, magnesium and calcium and yield of rice [J]. Chinese Rice Science, 2005(05): 434-440.), the calcium content of the fragrant rice cultivated in Examples 1 to 3 and Comparative Examples 1 to 6 was determined. The results are shown in Table 1. Comparison of the data of Comparative Examples 4 to 6 with the data of Comparative Examples 1 to 3 shows that the use of ultrasonic treatment of rice seedlings can improve the content, yield and calcium content of 2-acetyl-1-pyrroline (2-AP) of different varieties of fragrant rice to a certain extent; comparison of the data of Examples 1 to 3 with the data of Comparative Examples 1 to 3 shows that the use of ultrasonic treatment of rice seedlings, combined with the application of calcium fertilizer (including calcium bicarbonate and fragrant and calcium-rich foliar fertilizer), can significantly increase the calcium content of fragrant rice and significantly increase the yield of fragrant rice and significantly increase the content of fragrant 2-acetyl-1-pyrroline in fragrant rice, wherein the calcium content is more than 1.5 times that of conventionally grown ordinary rice (Comparative Examples 1 to 3), the content of fragrant 2-acetyl-1-pyrroline (2-AP) is increased by more than 20%, and the yield is increased by more than 13%; the quality of the fragrant rice cultivated in Examples 4 to 6 is basically the same as that in Example 1.

[0165] Table 1 Measurement of aroma, yield and calcium content of aromatic rice

[0166]

[0167] In Table 1, a, b, and c represent biostatistical analysis: if the letters are the same, for example, the same indicator of the same variety of aromatic rice is tested, the superscript of the corresponding values ​​is the same a, indicating that there is no significant difference between the two values; if the superscript letters of the values ​​obtained by the measured indicators are different, one is b and the other is a, it means that there is a significant difference between the two values.

[0168] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A fragrant rice foliar fertilizer, characterized in that: These include calcium acetate, pyrroline, and acetyl-CoA; Wherein, the mass ratio of calcium acetate, pyrroline and acetyl-CoA is 5-6:2-3:2-3.

2. Use of the fragrant rice foliar fertilizer according to claim 1 in crop cultivation.

3. A method for cultivating calcium-rich and fragrant rice, characterized in that: The following steps are involved: S1. Soaking and germinating the fragrant rice seeds until the buds are broken and further cultivated to obtain seedlings; S2. When the seedlings have 3 leaves and 1 heart, the seedlings are treated with ultrasound on the day of transplanting before transplanting; S3. Use special fertilizer for fragrant rice and calcium bicarbonate as base fertilizer and tillering fertilizer, and use the foliar fertilizer for fragrant rice described in claim 1 as ear-breaking fertilizer; wherein, the ear-breaking fertilizer is applied during the ear-breaking period of rice; the special fertilizer for fragrant rice is composed of 10% organic fertilizer, 26% urea, 50% superphosphate, 12% potassium chloride, 1.9% zinc sulfate and 0.1% lanthanum chloride.

4. The cultivation method according to claim 3, characterized in that: The application amount of the fragrant rice foliar fertilizer is 180-230 grams per mu.

5. The cultivation method according to claim 3, characterized in that: The frequency of the ultrasonic treatment is 20-40 kHz.

6. The cultivation method according to claim 3, characterized in that: The application amount of the special fertilizer for fragrant rice is 20 to 28 kg per mu.

7. The cultivation method according to claim 3, characterized in that: The application amount of the calcium bicarbonate is 8 to 12 kg / mu.

8. The cultivation method according to claim 3, characterized in that: The fragrant rice variety is any one or more of Meixiangzhan No. 2, 19xiang, and Nanjingxiangzhan.

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