A plum cultivation method for two harvests per year

Abstract

The present application relates to a kind of plum cultivation method of two harvests in a year, comprising the following steps: (1) culture plum spring shoot forms flower bud;(2) after two fruit harvest, water and fertilizer A is removed, summer pruning, control shoot;(3) remove leaf, winter pruning and apply base fertilizer;(4) root water and fertilizer B, germination;The flower of first fruit opens on the spring shoot;(5) in early February of next year, the flower of two fruit opens on the short fruit branch and flower bouquet fruit branch of the plum;4 in mid-April to mid-May, the first fruit matures;After the first fruit harvest, water and fertilizer C is removed, and the second fruit matures from mid-June to early July.The plum of the present application is two harvests in a year, and the total yield of two harvests (fruit) increases by 30.26%-52.50%, the first fruit matures 1-2 months earlier than normal, and the selling price increases by 3.29-4.36 times, the output value increases by 2.38-3.12 times, while adjusting the plum market supply in off-season, lengthening the shelf life of plum, improving the value of plum, thus better economic benefits are generated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plum cultivation, in particular to a plum cultivation method with two harvests in a year. BACKGROUND

[0002] Plum is a perennial deciduous fruit tree of the Prunoideae of the Rosaceae and the Prunus, and among the Prunus plants, there are many species originating from China, and there has been a cultivation history of more than 3,000 years, so it is one of the deciduous fruit trees with a long history in China. Plum is one of the important fruit trees in the temperate zone, especially in the northern hemisphere, and it has a wide adaptability in China and is distributed in almost all provinces (municipalities and autonomous regions). In 2022, the plum cultivation area in China was 1,975,000 mu, and the yield was 6,752,000 tons.

[0003] The conventional plum cultivation has only one fruiting and harvesting in a year. In order to regulate the market supply of plum in the off-season, meet the market demand, and increase the income of fruit farmers, on the basis of the existing cultivation technology and practice, the present application designs and develops a plum cultivation method with two harvests in a year. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a plum cultivation method with two harvests in a year. The purpose is to promote the early marketing of plum and have two harvests in a year, improve the yield and lengthen the shelf life, solve the contradiction between supply and demand caused by the simultaneous marketing of plum at the mature period, and thus increase the benefits of the growers.

[0005] The technical solution of the present application to solve the above technical problem is as follows: a plum cultivation method with two harvests in a year, comprising the following steps:

[0006] (1) cultivating spring shoots of plum and forming flower buds on the spring shoots;

[0007] (2) after the second fruiting and harvesting from mid-June to early July, spraying water and fertilizer A, pruning in summer, and controlling the shoots;

[0008] (3) removing the leaves from late September to mid-October, and performing winter pruning and applying base fertilizer from mid-October to early November;

[0009] (4) spraying water and fertilizer B on the roots from early November to mid-November, and accelerating the germination; the flowers of the first fruiting open on the spring shoots from mid-November to late December;

[0010] (5) the flowers of the second fruiting open on the short fruiting branches and the flower bundle fruiting branches of the plum in early February of the next year; the first fruiting matures from mid-April to mid-May; after the first fruiting is harvested, water and fertilizer C are sprayed; and the second fruiting matures from mid-June to early July.

[0011] On the basis of the above technical solution, the present application can also be improved as follows.

[0012] Further, the plums include at least one of Sanhua plum, Dashui plum, early plum, Longtan pearl plum, and honey plum.

[0013] Further, the step (1) includes the following specific steps: when the spring shoots of the plum are 30-40 cm long, spraying 2-3 times of the water solution for controlling shoots and promoting flowers on the whole plant.

[0014] Further, the water solution for controlling shoots and promoting flowers includes 0.075-0.1 g / L uniconazole, 0.01-0.02 g / L amaranth ester, 2-3 g / L potassium dihydrogen phosphate, and 0.5-1.0 g / L chlormequat chloride; and spraying once every 12-15 days.

[0015] Further, in the step (2), the water and fertilizer A after the second fruit harvest from the middle of June to the early of July includes the following specific steps: spraying 30-40 L of the water and fertilizer A per plant after the second fruit harvest; the water and fertilizer A contains 200-300 g of ternary compound fertilizer, 200-300 g of urea, 80-120 g of potassium fulvate, 15-30 g of sugar alcohol calcium, 30-45 g of sugar alcohol zinc, and 10-20 g of sugar alcohol magnesium per 100 L of water.

[0016] In the step (2), the summer pruning is the conventional pruning.

[0017] In the step (2), the shoot control includes the following specific steps: spraying 2-3 times of the water solution for controlling shoots on the whole plant after the second fruit harvest; the water solution for controlling shoots includes 0.3-0.5 g / L paclobutrazol, 1-1.5 g / L potassium dihydrogen phosphate, and 0.01-0.02 g / L amaranth ester; and spraying once every 12-15 days.

[0018] Further, in the step (3), the leaf removal from the end of September to the middle of October includes the following specific steps: spraying once of the water solution for removing leaves to remove leaves from the end of September to the middle of October; the water solution for removing leaves includes 150-225 g / L stone sulfur mixture.

[0019] In the step (3), the winter pruning from the middle of October to the early of November includes the following specific steps: performing the winter pruning from the middle of October to the middle of November, leaving 50-150 spring shoots with a diameter of 0.2-0.5 cm and a length of 25-60 cm and full of flower buds per plum tree, and performing the conventional pruning on the others.

[0020] In the step (3), the base fertilizer includes the following specific steps: spraying 1000-1500 kg of organic fertilizer, 25-30 kg of calcium-magnesium-phosphorus fertilizer, 20-25 kg of peanut bran, 7.5-10 kg of tea bran, 5-7.5 kg of tung bran, and 100-200 g of boron fertilizer per 666.7 m 2 ring ditch.

[0021] Further, in step (4), the root water and fertilizer B from early November to mid-November comprises the following specific steps: 40-60 L of water and fertilizer B per plant; the water and fertilizer B comprises 100-120 g of alginic acid fertilizer, 0.15-0.2 ml of 28-epi-brassinolide, 15-30 g of calcium glycol, 30-45 g of zinc glycol, 10-20 g of magnesium glycol and 20-30 g of boron fertilizer per 100 L of water;

[0022] In step (4), the germination accelerating comprises the following specific steps: 0.5-1.0 L of germination accelerating liquid is sprayed per plant.

[0023] Further, the germination accelerating liquid comprises 1.5-2 ml / L of cyanamide, 0.12-0.15 ml / L of dihydropropyl jasmonic acid, 0.5-0.8 g / L of mogroside and 0.2-0.3 g / L of boron.

[0024] Further, in step (5), the water and fertilizer C after the first fruit harvest comprises the following specific steps: 25-30 L of water and fertilizer C per plant; the water and fertilizer C comprises 100-120 g of alginic acid fertilizer, 400-500 g of rotten peanut meal, 200-300 g of rotten tea meal, 400-600 g of potassium sulfate and 80-100 g of potassium fulvic acid per 100 L of water.

[0025] Further, a thrips control agent is sprayed during the young fruit period of the first fruit or the second fruit.

[0026] The thrips control agent sprayed during the young fruit period of the first fruit or the second fruit comprises the following specific steps: 2-3 times of thrips control agent is sprayed 10 days after the flowering period; the thrips control agent comprises at least one of 5% multi-myclosin 1000-1500 times, 20% bifenoxthium dilution 1500-2000 times, 25% pymetrozine 1500-2000 times and 20% dinotefuran 1500-2000 times, which are used alternately and sprayed once every 10-15 days.

[0027] The present application has the following advantages:

[0028] (1) The plum cultivation method provided by the present application realizes the plum harvest twice a year, the total yield of the two harvests is increased by 30.26%-52.50%, the first fruit matures 1-2 months earlier than normal and the sales price is increased by 3.29-4.36 times, the output value is increased by 2.38-3.12 times, the market supply of plum is adjusted during the off-season, the shelf life of plum is prolonged, the value of plum is improved, and therefore better economic benefits are achieved, so the present application has significant popularization and application value.

[0029] (2) The present application proposes to form flower buds by culturing current-year plum sprouts, to bloom and bear fruits early by 1-2 months, and to bear fruits by secondary blooming of plum short fruit branches and flower-bundle fruit branches by using the method, which is simple in method and technique, strong in operability, easy to manage, and has wide practical application prospect.

[0030] (3) The plum one-year two-harvest cultivation method provided by the present application, through years of experiments and combined with the actual production, when the spring sprout is 30-40 cm long, a water solution of controlling sprout and promoting flower is sprayed to increase the content of chlorophyll, speed up the photosynthesis, regulate the balance of nutrients in the body, promote flower bud differentiation and early formation of flower buds; in late September to mid-October, a stone sulfur mixture is sprayed to remove leaves; in early November to mid-November, water-soluble fertilizer B is applied to the roots and the whole plant is sprayed with bud accelerating liquid to artificially break the dormancy of spring sprouts, so as to promote the plum spring sprouts to bloom from the conventional early February to December, the first fruiting is matured in late April to mid-May, the second fruiting blooms in early February, and is matured in mid-June to early July. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Figure 1 is a one-year two-harvest diagram of Sanhua plum according to the present application, wherein pink color is the first fruiting and blue color is the second fruiting.

[0032] Figure 2 Figure 2 is a one-year two-harvest diagram of Sanhua plum according to the present application, wherein pink color is the first fruiting and blue color is the second fruiting. DETAILED DESCRIPTION

[0033] The principles and characteristics of the present application are described below, and the examples are only used to explain the present application, and are not used to limit the scope of the present application. If the specific technology or condition is not specified in the examples, it is performed according to the technology or condition described in the literature in the art, or according to the product instruction. If the reagent or instrument is not specified by the manufacturer, it is a conventional product that can be commercially available through a regular channel.

[0034] The reagent source in the following examples is described as follows:

[0035] Enzyl (produced by Shanghai Yuelian Biotechnology Co., Ltd., 10% enzyl is a floating agent, specification: 500g), Amaranth (produced by Guangdong Plant Long Biotechnology Co., Ltd., 2% amaranth, specification: 1L), Chlormequat (produced by Sichuan Runer Technology Co., Ltd., 50% chlormequat aqueous solution, specification: 100ml), Three-element compound fertilizer (three-element compound fertilizer produced by Yantai Agricultural Production Material Technology Co., Ltd., the mass percentage of nitrogen, phosphorus and potassium is 15%, the total nutrient content is ≥45%, specification: 50kg), Potassium fulvate (potassium fulvate aqueous solution produced by Kangpo (China) Co., Ltd., mineral source fulvic acid ≥80g / L, potassium oxide (K20) >15g / L, specification: 20L), Organic fertilizer (Guilin Chetianhe Pasture Co., Ltd., specification: 25Kg / bag (organic matter ≥60%, N, P, K content ≥5%)), Calcium-magnesium-phosphorus fertilizer (calcium-magnesium-phosphorus fertilizer produced by Yunnan Kunyang Dianbai Chemical Co., Ltd., the mass percentage of effective diaphosphorus pentoxide ≥12%, specification: 25kg), Peanut meal (marketed), Tea meal (marketed), Tong meal (marketed), Boron fertilizer (Zhisin high boron produced by American Comphor Co., Ltd., sodium borate ≥98%, pure B ≥21%, specification: 1000g), Alginic acid fertilizer (produced by Shanghai Hanhe Biotechnology Co., Ltd., alginic acid >20g / L, specification: 1000ml), 28-epibrassinolide (produced by Kangpo (China) Co., Ltd., 0.004% 28-epibrassinolide (leaf spraying), 0.0016% 28-epibrassinolide (root application)), 5% doramectin (produced by Anhui Huaxing Chemical Co., Ltd., specification: 500ml), 20% bifenthrin (produced by Shandong Yeta Biological Technology Co., Ltd., specification: 200g), 25% pymetrozine (produced by Jiangsu Kesheng Group Co., Ltd., 25% pymetrozine suspension concentrate, specification: 100ml), 20% dinotefuran (produced by Jiangsu Yancheng Shuangning Agricultural Chemical Co., Ltd., 20% dinotefuran suspension concentrate, specification: 1L).

[0036] Example 1

[0037] The implementation site is located in Dongchang Town, Liupu City, Guilin, Guangxi; variety: Sanhua plum, tree age: 21 years.

[0038] The cultivation method of the plum one-year two-harvesting involved in the present example Figure 1 comprises the following steps:

[0039] (1) When the spring shoots grow to 30cm in 2022, 2 times of shoot control and flowering promoting water solution are sprayed, the shoot control and flowering promoting water solution contains 0.075g enzyl, 0.01g amaranth, 2g potassium dihydrogen phosphate and 0.5g chlormequat per liter of water, the second time is sprayed after 12 days, and the three-year-old spring shoots of Sanhua plum are cultured to form flower buds;

[0040] (2) After the first crop of fruits was harvested on June 25, 30 L of water-fertilizer solution was applied to each plant, the water-fertilizer solution containing 200 g of ternary compound fertilizer, 200 g of urea, 80 g of potassium fulvate, 15 g of calcium sugar alcohol, 30 g of zinc sugar alcohol and 10 g of magnesium sugar alcohol per 100 L of water; after summer pruning was performed on June 27, 1 time of water solution for controlling the growth of branches was sprayed on the whole plant on June 29 to control the growth of branches, the water solution for controlling the growth of branches containing 0.3 g of paclobutrazol, 1 g of potassium dihydrogen phosphate and 0.01 g of fresh amine ester per liter of water, and the second time of spraying was performed at an interval of 12 days;

[0041] (3) On September 30, 1 time of water solution for removing leaves was sprayed to remove leaves, the water solution for removing leaves containing 150 g of stone sulfur agent per liter of water; winter pruning was performed on October 25, 50 roots of spring shoots with a diameter of 0.2 cm and a length of 25 cm and full of flower buds were left on each plant, and other conventional pruning was performed. At the same time, 666.7 m 2 Ring opening ditch was applied with 1000 kg of organic fertilizer, 25 kg of calcium-magnesium-phosphorus fertilizer, 20 kg of peanut bran, 7.5 kg of tea bran, 5 kg of tung bran and 100 g of boron fertilizer;

[0042] (4) On November 5, 40 L of water-fertilizer was applied to the root of each plant, the water-fertilizer containing 100 g of alginic acid fertilizer, 0.15 ml of 28-epi brassinolide, 15 g of calcium sugar alcohol, 30 g of zinc sugar alcohol, 10 g of magnesium sugar alcohol and 20 g of boron fertilizer per 100 L of water; at the same time, 0.5 L of germination accelerating solution was sprayed on each plant, the germination accelerating solution containing 1.5 ml of cyanamide, 0.12 ml of dihydropropyl jasmonate, 0.5 g of mogroside and 0.2 g of boron per 1 L; the first crop of fruits flowered on December 6.

[0043] (5) On December 21, 1 time of pesticide was sprayed to control thrips, the pesticide can be selected from 5% multi-myclosin 1000-1500 times, 2023 January 16, 20% imidacloprid 1500-2000 times was sprayed; 2023 February 25, 25 L of water-fertilizer was applied to each plant, the water-fertilizer having a concentration of 100 g of alginic acid fertilizer, 400 g of rotten peanut bran, 200 g of rotten tea bran, 400 g of potassium sulfate and 80 g of potassium fulvate per 100 L of water; 2023 April 25, after the fruits were matured, the first crop of fruits was harvested, and the yield of the first crop of fruits per mu was 1025.6 kg;

[0044] (6) The short fruit branches and flower bouquet fruit branches of the three Huai plum flowered twice on February 7, 2023, and the second crop of fruits was harvested after maturation on June 28, and the yield of the second crop of fruits per mu was 1462.4 kg (Tables 1 and 2);

[0045] (7) Other conventional management.

[0046] Example 2

[0047] The implementation site was located in Dongchang Town, Lipu City, Guilin, Guangxi; the variety was three Huai plum, and the tree age was 21 years.

[0048] The embodiment relates to a plum cultivation method for two-year harvests Figure 2 , comprising the following steps:

[0049] (1) When the spring shoots grow to 40 cm in 2022, 3 times of shoot-controlling and flower-promoting water solutions are sprayed, the shoot-controlling and flower-promoting water solution contains 0.1 g of uniconazole, 0.02 g of amixetril, 3 g of potassium dihydrogen phosphate and 1.0 g of chlormequat in 1 L of water, the interval is 15 days each time, and flower buds of the three-hua plum annual spring shoots are formed;

[0050] (2) Water and fertilizer are applied after the second fruit harvest on June 25, 40 L of water and fertilizer solution is applied to each plant, the water and fertilizer solution contains 300 g of ternary compound fertilizer, 300 g of urea, 120 g of potassium fulvic acid, 30 g of calcium sugar alcohol, 45 g of zinc sugar alcohol and 20 g of magnesium sugar alcohol in 100 L of water; summer pruning is performed on June 30, and 3 times of shoot-controlling water solutions are continuously sprayed to the whole plant on July 1, the interval is 15 days each time; the shoot-controlling water solution contains 0.5 g of paclobutrazol, 1.5 g of potassium dihydrogen phosphate and 0.02 g of amixetril in 1 L of water;

[0051] (3) Leaf removal is performed by spraying a leaf-removing water solution on October 24, the leaf-removing water solution contains 225 g of stone sulfur mixture in 1 L of water; winter pruning is performed on November 21, 100 spring shoots with a diameter of 0.5 cm, a length of 50 cm and full flower buds are reserved for each plant, and other conventional pruning is performed. Meanwhile, 1500 kg of organic fertilizer, 30 kg of calcium-magnesium-phosphorus fertilizer, 25 kg of peanut bran, 10 kg of tea bran, 7.5 kg of tung bran and 200 g of boron fertilizer are applied in the open loop ditch per 666.7 m 2

[0052] (4) 60 L of water and fertilizer is applied to each plant on November 22, the water and fertilizer contains 120 g of alginic acid fertilizer, 0.2 ml of 28-epi-brassinolide, 30 g of calcium sugar alcohol, 45 g of zinc sugar alcohol, 20 g of magnesium sugar alcohol and 30 g of boron fertilizer in 100 L of water; meanwhile, 1.0 L of germination accelerating solution is sprayed to each plant, the germination accelerating solution contains 2 ml of cyanamide, 0.15 ml of dihydropropyl jasmonic acid, 0.8 g of mogroside and 0.3 g of boron in 1 L of water. The first fruit blooms on December 24.

[0053] (5) 5% of polyoxin 1500 times is sprayed to the whole plant on January 15, 2023, 20% of bifenzthiazuron 2000 times is sprayed to the whole plant on January 28; the fruits are harvested after maturing on May 13; the yield of the first fruit is 1187.3 kg per mu;

[0054] ​(6) The short fruit branches and the bouquet fruit branches bloom twice on February 7, and are watered and fertilized once on April 25, with 30L of water and fertilizer per plant, and the water and fertilizer is 100L of water containing 120g of alginic acid fertilizer, 500g of rotten peanut dregs, 300g of rotten tea dregs, 600g of potassium sulfate, and 100g of potassium fulvic acid; the second crop of fruits is harvested after maturing on July 2; the yield of the second crop of fruits per mu is 1725.6kg (Tables 1 and 2);

[0055] (7) Other routine management.

[0056] Example 3

[0057] The implementation site is located in Dongchang Town, Lipu City, Guilin, Guangxi, and the variety is Dashu plum, with a tree age of 19 years.

[0058] The cultivation method of the plum for two harvests per year disclosed in the present embodiment comprises the following steps:

[0059] (1) When the spring shoots grow to 30cm in 2022, 2 times of water solution for controlling shoots and promoting flowers are sprayed, the water solution for controlling shoots and promoting flowers contains 0.075g of uniconazole, 0.01g of amixetril, 2g of potassium dihydrogen phosphate, and 0.5g of mepiquat chloride per liter of water, and the second spraying is performed after an interval of 13 days, so as to cultivate flower buds of the current-year spring shoots of the Dashu plum;

[0060] (2) After the second crop of fruits is harvested on May 28, 30L of water and fertilizer solution is applied per plant, and the water and fertilizer solution contains 200g of ternary compound fertilizer, 200g of urea, 80g of potassium fulvic acid, 15g of calcium sugar alcohol, 30g of zinc sugar alcohol, and 10g of magnesium sugar alcohol per 100L of water; after summer pruning is performed on June 10, 1 time of water solution for controlling shoots is sprayed on the whole plant on June 15 to control shoots, the water solution for controlling shoots contains 0.3g of paclobutrazol, 1g of potassium dihydrogen phosphate, and 0.01g of amixetril per liter of water, and the second spraying is performed after an interval of 12 days;

[0061] (3) 1 time of water solution for removing leaves is sprayed on October 21 to remove leaves, the water solution for removing leaves contains 150g of stone sulfur agent per liter of water; 100 roots of spring shoots with a diameter of 0.4cm and a length of 45cm and full of flower buds are left per plant after winter pruning is performed on November 18, and other routine pruning is performed. At the same time, 1000kg of organic fertilizer, 25kg of calcium-magnesium-phosphorus fertilizer, 20kg of peanut dregs, 7.5kg of tea dregs, 5kg of tung dregs, and 100g of boron fertilizer are applied in open-loop ditch per 666.7m 2

[0062] ​(4) On November 22, each plant was irrigated with 50 L of water containing 100 g of alginic acid fertilizer, 0.15 ml of 28-epi-brassinolide, 15 g of calcium glycerophosphate, 30 g of zinc glycerophosphate, 10 g of magnesium glycerophosphate, and 20 g of boron fertilizer; at the same time, each plant was sprayed with 0.75 L of germination accelerating solution, and the germination accelerating solution contained 1.5 ml of cyanamide, 0.12 ml of dihydropropyl jasmonate, 0.5 g of mogroside, and 0.2 g of boron. Flowering of the first crop occurred on December 26.

[0063] (5) On January 17, 2023, the first pesticide spraying was performed to control the thrips, and the pesticide can be selected as 5% spirodiclofen 1250 times; on February 2, 2023, 20% dinotefuran 1750 times was sprayed; on April 29, 2023, the fruits were harvested after ripening, and the yield of the first crop per mu was 1128.9 kg;

[0064] (6) The short fruiting branches and the flower cluster fruiting branches of the big water plum flowered twice on February 1, 2023, and each plant was irrigated with 30 L of water containing 100 g of alginic acid fertilizer, 400 g of decomposed peanut meal, 200 g of decomposed tea meal, 400 g of potassium sulfate, and 80 g of potassium fulvic acid on April 30; the second crop was harvested after ripening on May 30, and the yield of the second crop per mu was 1545.1 kg (Tables 1 and 2);

[0065] (7) Other conventional management.

[0066] Control Example 1

[0067] The implementation site is located in Dongchang Town, Liupu City, Guilin, Guangxi, and the variety is Sanhua plum, and the tree age is 21 years.

[0068] The cultivation method of the plum for two harvests per year disclosed in the present embodiment comprises the following steps:

[0069] (1) After the fruits were harvested on June 25, 2022, 30 L of water fertilizer solution was applied to each plant, and the water fertilizer solution contained 200 g of ternary compound fertilizer, 200 g of urea, 80 g of potassium fulvic acid, 15 g of calcium glycerophosphate, 30 g of zinc glycerophosphate, and 10 g of magnesium glycerophosphate per 100 L of water; after summer pruning on July 5, 1 spraying of the water solution for controlling the height of the branches was performed on July 10 to control the height of the branches, and the concentration of the water solution for controlling the height of the branches was 0.3 g of paclobutrazol, 1 g of potassium dihydrogen phosphate, and 0.01 g of amisoft ester per liter of water, and the second spraying was performed after 12 days;

[0070] (2) Winter pruning was performed on November 21, and each plant needed to leave 100 spring shoots with a diameter of 0.4 cm and a length of 45 cm and full flower buds, and other conventional pruning was performed. At the same time, 666.7 m 2 Ring ditching was performed to apply 1000 kg of organic fertilizer, 25 kg of calcium-magnesium-phosphorus fertilizer, 20 kg of peanut meal, 7.5 kg of tea meal, 5 kg of tung meal, and 100 g of boron fertilizer;

[0071] (3) On November 22, 50 L of water and fertilizer solution was sprayed on each plant, the water and fertilizer solution was 100 L of water containing 100 g of alginate fertilizer, 0.15 ml of 28-epi brassinolide, 15 g of calcium glycerophosphate, 30 g of zinc glycerophosphate, 10 g of magnesium glycerophosphate and 20 g of boron fertilizer; from mid-December to early January, no flowering of Sanhuapom was observed;

[0072] (4) Sanhuapom began to bloom on February 5, 2023, and 30 L of water and fertilizer solution was sprayed on each plant on April 30, the water and fertilizer solution was 100 L of water containing 100 g of alginate fertilizer, 400 g of rotten peanut meal, 200 g of rotten tea meal, 400 g of potassium sulfate and 80 g of potassium fulvic acid; on June 26, Sanhuapom was harvested after maturation, and the yield per mu was 1910.1 kg (Tables 1 and 2);

[0073] (5) Other conventional management.

[0074] Control Example 2:

[0075] The implementation site was located in Dongchang Town, Lipu City, Guilin, Guangxi, and the variety was Dashuili, and the tree age was 19 years.

[0076] The cultivation method of the plum for two harvests per year disclosed in the present embodiment comprises the following steps:

[0077] (1) When the spring shoots grow to 30 cm in 2022, 2 times of water solution for controlling shoots and promoting flowers are sprayed, the water solution for controlling shoots and promoting flowers contains 0.075 g of uniconazole, 0.01 g of amixetril, 2 g of potassium dihydrogen phosphate and 0.5 g of chlormequat in each liter of water, the second spraying is performed after 13 days, and the current year spring shoots of Dashuili are cultured to form flower buds;

[0078] (2) After the fruit is harvested on May 28, 30 L of water and fertilizer solution is applied to each plant, the water and fertilizer solution contains 200 g of ternary compound fertilizer, 200 g of urea, 80 g of potassium fulvic acid, 15 g of calcium glycerophosphate, 30 g of zinc glycerophosphate and 10 g of magnesium glycerophosphate in each 100 L of water; after summer pruning on June 10, 1 time of water solution for controlling shoots is sprayed on the whole plant on June 15 to control shoots, the water solution for controlling shoots contains 0.3 g of paclobutrazol, 1 g of potassium dihydrogen phosphate and 0.01 g of amixetril in each liter of water, and the second spraying is performed after 12 days;

[0079] (3) On October 21, 1 time of water solution for removing leaves is sprayed to remove leaves, the water solution for removing leaves contains 150 g of stone sulfur agent in each liter of water; on November 18, winter pruning is performed, 100 spring shoots with a diameter of 0.4 cm and a length of 45 cm and full flower buds are left on each plant, and other conventional pruning is performed. At the same time, 1000 kg of organic fertilizer, 25 kg of calcium-magnesium-phosphorus fertilizer, 20 kg of peanut meal, 7.5 kg of tea meal, 5 kg of tung meal and 100 g of boron fertilizer are applied in a ring ditch per 666.7 m 2 On November 22, 50 L of water and fertilizer solution was sprayed on each plant, the water and fertilizer solution was 100 L of water containing 100 g of alginate fertilizer, 0.15 ml of 28-epi brassinolide, 15 g of calcium glycerophosphate, 30 g of zinc glycerophosphate, 10 g of magnesium glycerophosphate and 20 g of boron fertilizer; from mid-December to early January, no flowering of Sanhuapom was observed;

[0080] (4) On November 22, 50L of water and fertilizer was sprayed on the roots of each plant, and the water and fertilizer contained 100g of alginic acid fertilizer, 0.15ml of 28-epi-brassinolide, 15g of calcium glycerophosphate, 30g of zinc glycerophosphate, 10g of magnesium glycerophosphate, and 20g of boron fertilizer; from early December to late January, no water and fertilizer was sprayed on the roots of each plant.

[0081] (5) On February 3, 2023, the big plum began to bloom, and on April 30, 30L of water and fertilizer was sprayed on the roots of each plant, and the water and fertilizer contained 100g of alginic acid fertilizer, 400g of rotten peanut meal, 200g of rotten tea meal, 400g of potassium sulfate, and 80g of potassium fulvic acid; on May 27, the mature fruit was harvested, and the yield per mu was 1885.5kg (Tables 1 and 2).

[0082] (6) Other conventional management.

[0083] Table 1 Comparison of flowering time and maturation period of control examples 1 and 2 and examples 1, 2 and 3

[0084]

[0085] Table 2 Comparison of yield per mu, sales price and yield per mu of control examples 1 and 2 and examples 1, 2 and 3

[0086]

[0087] As can be seen from the above, the present application provides a plum cultivation method for two harvests per year, which makes the plum have two harvests per year, the total yield of two harvests (fruit production) increases by 30.26%-52.50%, the maturation period of the first fruit production is 1-2 months earlier than normal, the sales price is increased by 3.29-4.36 times, the yield value is increased by 2.38-3.12 times, the market supply of plum fruit in the off-season is adjusted, the shelf life of plum fruit is lengthened, and the value of plum fruit is improved, thereby achieving better economic benefits.

[0088] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A method for cultivating Prunus domestica for two harvests per year, characterized by, Comprising the following steps: (1) Cultivating the spring shoots of plums, and forming flower buds on the spring shoots; (2) Spraying water and fertilizer A after the second fruit harvest in mid-June to early July, summer pruning, and shoot control; In step (2), spraying water and fertilizer A after the second fruit harvest in mid-June to early July comprises the following specific steps: spraying 30-40 L of water and fertilizer A per plant after the second fruit harvest; the water and fertilizer A comprises 200-300 g of ternary compound fertilizer, 200-300 g of urea, 80-120 g of potassium fulvic acid, 15-30 g of calcium glycolate, 30-45 g of zinc glycolate, and 10-20 g of magnesium glycolate per 100 L of water; (3) Removing leaves at the end of September to mid-October, and performing winter pruning and base fertilization from mid-October to early November; (4) Root spraying of water and fertilizer B from early November to mid-November, and bud induction; From mid-November to late December, the flowers of the first fruit grow on the spring shoots; In step (4), root spraying of water and fertilizer B from early November to mid-November comprises the following specific steps: spraying 40-60 L of water and fertilizer B per plant; the water and fertilizer B comprises 100-120 g of alginic acid fertilizer, 0.15-0.2 ml of 28-epi brassinolide, 15-30 g of calcium glycolate, 30-45 g of zinc glycolate, 10-20 g of magnesium glycolate, and 20-30 g of boron fertilizer per 100 L of water; (5) In early February of the next year, the flowers of the second fruit grow on the short fruit branches and flower cluster fruit branches of the plums; the first fruit matures from mid-April to mid-May; spraying water and fertilizer C after the first fruit harvest; the second fruit matures from mid-June to early July; In step (5), spraying water and fertilizer C after the first fruit harvest comprises the following specific steps: spraying 25-30 L of water and fertilizer C per plant; the water and fertilizer C comprises 100-120 g of alginic acid fertilizer, 400-500 g of decomposed peanut meal, 200-300 g of decomposed tea meal, 400-600 g of potassium sulfate, and 80-100 g of potassium fulvic acid per 100 L of water.

2. The method for two-harvest per year of Prunus domestica according to claim 1, characterized by the fact that, The plums comprise at least one of Sanhua plum, Dashui plum, early plum, Longtan pearl plum, and honey plum.

3. The method for two-harvest per year of plum according to claim 1, characterized in that, Step (1) comprises the following specific steps: when the spring shoots of the plums grow to 30-40 cm, spraying 2-3 times of shoot control and flower promoting water solution on the whole plant.

4. The method for two-harvest per year of Prunus domestica according to claim 3, characterized by the fact that, The shoot control and flower promoting water solution comprises 0.075-0.1 g / L of uniconazole, 0.01-0.02 g / L of amaranth ester, 2-3 g / L of potassium dihydrogen phosphate, and 0.5-1.0 g / L of chlormequat; spraying once every 12-15 days.

5. The method for two-harvest per year of plum according to claim 1, characterized in that, In step (2), the shoot control comprises the following specific steps: spraying 2-3 times of shoot control water solution on the whole plant after the second fruit harvest; the shoot control water solution comprises 0.3-0.5 g / L of paclobutrazol, 1-1.5 g / L of potassium dihydrogen phosphate, and 0.01-0.02 g / L of amaranth ester; spraying once every 12-15 days.

6. The plum one-year two-harvest cultivation method according to claim 1, wherein In step (3), removing leaves at the end of September to mid-October comprises the following specific steps: spraying a leaf removal water solution once at the end of September to mid-October to remove leaves; the leaf removal water solution comprises 150-225 g / L of stone sulfur. In step (3), the winter pruning in mid-October to early November comprises the following specific steps: 50-150 straight shoots with a diameter of 0.2-0.5 cm and a length of 25-60 cm and full flower buds are reserved on each plum tree during the winter pruning in mid-October to early November; The base fertilizer in step (3) includes the following specific steps: applying 1000-1500 kg of organic fertilizer, 25-30 kg of calcium-magnesium phosphate fertilizer, 20-25 kg of peanut chaff, 7.5-10 kg of tea chaff, 5-7.5 kg of tung chaff, and 100-200 g of boron fertilizer per 666.7 m 2 The base fertilizer in step (3) includes the following specific steps: applying 1000-1500 kg of organic fertilizer, 25-30 kg of calcium-magnesium phosphate fertilizer, 20-25 kg of peanut chaff, 7.5-10 kg of tea chaff, 5-7.5 kg of tung chaff, and 100-200 g of boron fertilizer per 666.7 m 7. The method for two-harvest per year of plum according to claim 1, wherein, In step (4), the germination accelerating comprises the following specific steps: 0.5-1.0 L of the germination accelerating liquid is sprayed on each plum tree.

8. The method for two-harvest per year of Prunus domestica according to claim 7, characterized by the fact that, The germination accelerating liquid comprises 1.5-2 ml / L of monocyannamide, 0.12-0.15 ml / L of dihydropropyl jasmonate, 0.5-0.8 g / L of mogroside and 0.2-0.3 g / L of boron.

9. The method for two-harvest per year of plum according to claim 1, characterized in that, The agent for preventing and treating thrips is sprayed on the plum trees during the young fruit stage of the first fruiting or the second fruiting; The agent for preventing and treating thrips during the young fruit stage of the first fruiting or the second fruiting comprises the following specific steps: the agent for preventing and treating thrips is sprayed for 2-3 times at an interval of 10-15 days after the flowering period; the agent for preventing and treating thrips comprises at least one of 5% spirodiclofen 1000-1500 times, 20% bistrifluron diluted 1500-2000 times, 25% pymetrozine 1500-2000 times and 20% dinotefuran 1500-2000 times.

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