Method for producing bamboo shoots from phyllostachys praecox in summer and autumn

Abstract

The invention provides a method for producing bamboo shoots from phyllostachys praecox in summer and autumn, and belongs to the technical field of bamboo shoot production. According to the method for producing bamboo shoots from phyllostachys praecox in summer and autumn, bamboo rhizome cultivation in summer and autumn and promotion of growth of the bamboo rhizome are carried out through measures such as trench digging and sufficient fertilizer and water management, and then bamboo shoot bud differentiation of the bamboo rhizome is promoted, so that rhizome bamboo shoots can be produced in summer and autumn, and the natural bamboo shoot emergence time of phyllostachys praecox forest is broken through. According to the method, the temperature is controlled to be 15-26 DEG C and the humidity is controlled to be 70-85% through various measures, so that the influence of high temperature and low humidity in summer and autumn is overcome, and a suitable temperature and humidity environment for the growth of the rhizome bamboo shoots is created. According to the method, bamboo shoots can be produced in summer and autumn, the bamboo shoot yield can be remarkably increased, the fresh bamboo shoot slack season market requirement is met, and the bamboo forest income is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of bamboo shoot production, and particularly relates to a method for producing bamboo shoots of Phyllostachys praecox in summer and autumn. Background Art

[0002] Phyllostachys praecox is a cultivated species of Phyllostachys genus of Gramineae. The height of the culm can reach 10 meters. The young culm is dark green, the nodes are dark purple, and the old culm is green, yellow-green or gray-green. The culm nodes are purple-brown at first, and the internodes do not expand slightly to the other side of the branch, but become slightly thinner in the middle. Bamboo shoots are an important output of bamboo crops. Bamboo shoots are also one of my country's traditional forest vegetables. They are rich in sugar, protein, cellulose, mineral elements and vitamins and other nutrients. They are delicious and nutritious and have always been loved by people. Bamboo shoots contain 18 kinds of amino acids and are rich in essential amino acids for the human body. The total amount of amino acids in fresh bamboo shoots is about 29%. Bamboo shoots also contain a variety of trace elements necessary for the human body, such as Se and Ge. Studies have shown that bamboo shoots are nutritious, high in protein, low in fat, and delicious. They are a forest vegetable with health care functions, with multiple health care functions such as weight loss, anti-intestinal cancer, lowering blood lipids, and anti-aging.

[0003] Hubei Xianning has rich resources of Leizhu, about 50,000 mu, and winter and spring bamboo shoots can be harvested according to the harvesting time. But in fact, the Leizhu forest shoots generally germinate and differentiate in late summer and early autumn every year. From October to December, the shoots are enlarged, the sheaths are brown-green or light black-brown, and the outside is covered with fluff, which is called "winter bamboo shoots". The winter bamboo shoots grown from the shallow whip can be harvested in small quantities after breaking through the soil in winter. Due to the low temperature in winter, most bamboo shoots are dormant and can only be unearthed after the temperature rises in spring. They are called "spring bamboo shoots". The harvesting time of "spring bamboo shoots" is generally from March to April every year. However, fresh bamboo shoots cannot be produced in summer and autumn, which cannot meet market demand. Summary of the invention

[0004] The invention provides a method for producing bamboo shoots from Phyllostachys praecox all year round, which can meet the market demand for fresh bamboo shoots in the off-season and increase the income of bamboo forests.

[0005] The invention provides a method for producing bamboo shoots of leucophylla in summer and autumn, comprising the following steps: after harvesting spring bamboo shoots, arranging grooves on a bamboo forest open space at a distance from mother bamboos, filling the grooves with mixed fertilizer and soil, and adjusting the growth environment of the mother bamboos, wherein the adjustment comprises adjusting the temperature to 15-26°C and the humidity to 70-85%.

[0006] In a preferred embodiment of the present invention, after the spring bamboo shoots are harvested, the amount of standing mother bamboos is 800 to 1000 plants per mu.

[0007] In a preferred embodiment of the present invention, the groove is set in a bamboo forest space next to a 2- to 3-year-old mother bamboo at the end of April, and the groove is set along the direction of the bamboo whip or the contour defense line.

[0008] In a preferred embodiment of the present invention, the groove is 20 to 30 cm away from the mother bamboo, 30 to 40 cm deep and 30 to 40 cm wide.

[0009] In a preferred embodiment of the present invention, when filling the trench, the mixed fertilizer is filled with a layer of soil, or the mixed fertilizer and soil are mixed evenly and then directly backfilled.

[0010] In a preferred embodiment of the present invention, the components of the mixed fertilizer include: organic fertilizer, agricultural waste, nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer and selenium fertilizer.

[0011] In a preferred embodiment of the present invention, the composition of the mixed fertilizer includes: 2000-3000 kg / mu of organic fertilizer, 200-250 kg / mu of 42% potassium sulfate compound fertilizer, 10-15 kg / mu of urea and 5000-6000 kg / mu of old rice husk.

[0012] In a preferred embodiment of the present invention, after the trench is filled, when the temperature on the trench surface exceeds 28°C, straw is spread on the trench surface to cool it down; when the temperature on the trench surface exceeds 30°C, an arch shed is built on the straw, and a cooling agent is sprayed on the shed surface.

[0013] The present invention also provides application of the method in producing bamboo shoots of Phyllostachys praecox all year round.

[0014] The present invention also provides a method for producing bamboo shoots of Phyllostachys praecox all year round, comprising producing summer and autumn bamboo shoots by utilizing the above method, and continuing to cultivate after the summer and autumn bamboo shoots are harvested, and harvesting winter bamboo shoots and spring bamboo shoots.

[0015] Beneficial effects: The present invention provides a method for producing bamboo shoots in summer and autumn of Leizhu, which cultivates bamboo whips in summer and autumn by digging grooves and managing sufficient fertilizer and water, thereby promoting the growth of bamboo whips, and then promoting the differentiation of bamboo whip buds, including the differentiation of bamboo whip buds of partially dormant bamboo whips in the first year, and the second differentiation of bamboo whip buds of partially differentiated bamboo whips that have produced and withdrawn bamboo shoots, thereby promoting the rapid growth of whip shoots, so that whip shoots can be produced in summer and autumn, breaking through the time of natural bamboo shoots in Leizhu forests. The present invention also controls the temperature at 15-26°C and the humidity at 70-85% through various measures, thereby overcoming the influence of high temperature and low humidity in summer and autumn, and creating a suitable temperature and humidity environment for the growth of whip shoots. The method of the present invention can produce bamboo shoots in summer and autumn, can significantly increase the yield of bamboo shoots, meet the market demand for fresh bamboo shoots in the off-season, and increase the income of bamboo forests. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of digging trenches in the Leizhu forest. DETAILED DESCRIPTION

[0017] The invention provides a method for producing bamboo shoots of leucophylla in summer and autumn, comprising the following steps: after harvesting spring bamboo shoots, arranging grooves on a bamboo forest open space at a distance from mother bamboos, filling the grooves with mixed fertilizer and soil, and adjusting the growth environment of the mother bamboos, wherein the adjustment comprises adjusting the temperature to 15-26°C and the humidity to 70-85%.

[0018] The production method of winter bamboo shoots and spring bamboo shoots of the present invention is not particularly limited, and the conventional method in the art can be used for production. The present invention cultivates and grows bamboo whips in summer and autumn after harvesting spring bamboo shoots, thereby promoting the differentiation of bamboo whip shoots, and achieving the purpose of producing fresh bamboo shoots in summer and autumn. The bamboo whips of the present invention generally have the characteristics of growing forward and toward fertile, loose and moist soil, and the bamboo whips generally grow in the soil layer 10 to 25 cm underground, and the growth of bamboo whips and whip shoots is promoted by digging grooves, fertilizing, spraying water and other measures.

[0019] The present invention selects a leucophylla forest that naturally produces bamboo shoots. After the spring bamboo shoots are harvested, a mother bamboo with a reasonable amount of standing bamboo is selected to induce the production of bamboo shoots in summer and autumn. In a specific embodiment, the amount of standing bamboo per mu is controlled at 800 to 1000 plants, and a groove is dug in a bamboo forest open space next to the mother bamboo at the end of April. The mother bamboo can be selected to be cultivated with the strongest bamboo shoot production ability in 2 to 3 years. The groove of the present invention is set at 20 to 30 cm away from the mother bamboo, and the setting direction of the groove is set along the direction of the bamboo whip or the contour line, with a depth of 30 to 40 cm and a width of 30 to 40 cm. The length of the groove can be determined according to actual conditions, such as the length of the short groove can be determined according to the distance between the two mother bamboos, and the length of the long groove can be determined according to demand. However, when setting the long groove, if there are other mother bamboos in the middle of the long groove, the mother bamboo can be skipped and reset.

[0020] The present invention fills the dug trench with mixed fertilizer and soil, which can be filled in a layer of soil and fertilizer, or the fertilizer and soil can be fully mixed and then backfilled. The formula of the mixed fertilizer of the present invention includes organic fertilizer, nitrogen fertilizer, phosphate fertilizer, potash fertilizer and agricultural waste, wherein the agricultural waste can be old rice husk. Selenium fertilizer can also be added to the mixed fertilizer of the present invention to improve the quality of bamboo shoots. For example, in one embodiment of the present invention, 2000-3000kg / mu of organic fertilizer, 200-250kg / mu of 42% potassium sulfate compound fertilizer, 10-15kg / mu of urea, 1000-1500mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk are fully mixed. The present invention does not specifically limit the sources of various fertilizers. In one embodiment, organic fertilizer is purchased from Jiangsu Siweibo Biotechnology Co., Ltd., organic fermented compost (pure cow dung fermentation), organic matter: 50% ± 5%, NPK: 2.5% ± 0.3%; potassium sulfate compound fertilizer is purchased from Alwei International Trade (Hubei) Co., Ltd., high-concentration potassium sulfate compound fertilizer, NPK: 15-15-15, total nutrients ≥ 45% urea is purchased from Hubei Yihua Group, agricultural urea, total nitrogen 46%; nano-selenium fertilizer is purchased from Selenium Huinong Biotechnology (Shenzhen) Co., Ltd., biological nano-selenium nutrients, selenium content 2g / L; old husks can be collected from local farmers. The organic fertilizer of the present invention can increase fertilizer efficiency, increase soil organic matter content and soil permeability; old husks can increase soil organic matter content and soil permeability; nano-selenium fertilizer can increase the nucleoside components in bamboo shoots and improve the quality of bamboo shoots.

[0021] The suitable temperature for the growth of the praecox described in the present invention is 15-26°C, and the humidity is 70-85%. If the humidity is too low, water can be sprayed appropriately. If the temperature is too high, such as when the temperature on the trough surface exceeds 28°C, a layer of straw can be laid on the trough surface. If the temperature on the trough surface exceeds 30°C, a small arch shed can be built on the basis of a layer of straw on the trough surface, and a cooling agent can be sprayed on the shed surface to reduce the temperature by 8-12°C. And combined with the humidity in the trough, spray water appropriately to cool down. The thickness of the straw can be 20-30cm, the height of the arch shed is about 100cm, and the span is about 40cm; when the cooling agent is used, the cooling agent and water are mixed in a volume ratio of 1:6 and evenly sprayed on the surface of the shed film. The cooling agent is purchased from Beijing Ruixue Global Technology Co., Ltd., product brand: Liliang.

[0022] By using the method of the present invention, bamboo shoots are grown from mid-June to mid-August, and when the bamboo shoots grow to about 40 cm, the edible part of the front 20 cm of the bamboo shoots is dug. By using this method, about 130 kg of fresh bamboo shoots can be produced per mu, the market price of fresh bamboo shoots is about 30 yuan / kg, and the income per mu is about 4,000 yuan, which can meet the market demand and increase the income of the bamboo forest.

[0023] The present invention also provides application of the method in producing bamboo shoots of Phyllostachys praecox all year round.

[0024] By utilizing the method of the present invention, after the bamboo shoots in summer and autumn are harvested, the bamboo forest is tended according to a conventional method, which does not affect the normal growth of the bamboo forest and the normal production of bamboo shoots in the next year. That is, the method of the present invention can meet the requirement of producing bamboo shoots of Phyllostachys praecox all year round.

[0025] The present invention also provides a method for producing bamboo shoots of Phyllostachys praecox all year round, comprising producing summer and autumn bamboo shoots by utilizing the above method, and continuing to cultivate after the summer and autumn bamboo shoots are harvested, and harvesting winter bamboo shoots and spring bamboo shoots.

[0026] The present invention does not specifically limit the cultivation method of the winter bamboo shoots and spring bamboo shoots, and the cultivation can be carried out using conventional methods in the art, such as referring to the study on the yield-increasing effect of several covering materials on Phyllostachys praecox shoots in red soil areas (Journal of Bamboo Research 2016.2), Phyllostachys praecox covering cultivation technology (Economic Forest Research 2013.12), Early and high-yield cultivation technology of Phyllostachys praecox shoots (Economic Forest Research 1995) or Early and high-yield cultivation technology of Phyllostachys praecox shoots (Journal of Zhejiang Forestry College 1994.11).

[0027] To further illustrate the present invention, a method for producing bamboo shoots from Phyllostachys praecox in summer and autumn provided by the present invention is described in detail below in conjunction with embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0028] Example 1

[0029] Select a bamboo forest with natural bamboo shoots. When the spring bamboo shoots are harvested, keep the mother bamboos reasonably to 800 to 1,000 bamboos per mu. In late April, select a bamboo forest open space next to the 2-3 year old mother bamboos. Dig a trench 30 to 40 cm deep and 30 to 40 cm wide along the bamboo whip or contour line at a distance of about 30 cm from the mother bamboos. The length of the trench is determined according to the actual situation. The length of the short trench is determined by the distance between the two mother bamboos, and the long trench is determined according to the demand. However, if other mother bamboos are encountered in the middle of the trench, they will be skipped. After the trench is dug, start to apply the prepared mixed fertilizer and backfill the loose soil, or backfill after a layer of soil and fertilizer or a layer of fertilizer or fertilizer and soil are fully mixed. The mixed fertilizer formula is 2000 kg / mu of organic fertilizer, 200 kg / mu of 42% potassium sulfate compound fertilizer, 10 kg / mu of urea, 1000 mL / mu of nano selenium fertilizer and 5000 to 6000 kg / mu of old rice husks.

[0030] The temperature suitable for the growth of praecox is 15℃~26℃, and the air humidity is 70~85%. If the humidity is too low, spray water appropriately. If the temperature is too high, and the temperature on the trough surface exceeds 28℃, you can spread a layer of straw on the trough surface. If the temperature on the trough surface exceeds 30℃, build a small arch shed on the basis of a layer of straw on the trough surface, and spray cooling agent on the shed surface, which can reduce the temperature by 8-12℃. And according to the humidity in the trough, spray water appropriately to reduce the temperature. From mid-June to mid-August, whip shoots will grow one after another. When the whip shoots grow to about 40cm, dig out the edible part of the front 20cm of the whip shoots.

[0031] This method can produce about 130kg of fresh bamboo shoots per mu. After the bamboo shoots are harvested, the bamboo forest can be tended using conventional methods, which will not affect the normal growth of the bamboo forest and the normal production of bamboo shoots next year.

[0032] Example 2

[0033] Select a bamboo forest with natural bamboo shoots. After the spring bamboo shoots are harvested and the mother bamboos are reasonably kept to 800 to 1,000 bamboos per mu, select a bamboo forest open space next to the 2-3 year old mother bamboo in late April. Dig a trench 30 to 40 cm deep and 30 to 40 cm wide along the bamboo whip or contour line at a distance of about 30 cm from the mother bamboo. The length of the trench is determined according to the actual situation. The length of the short trench is determined by the distance between the two mother bamboos, and the long trench is determined according to the demand, but other mother bamboos will be skipped in the middle of the trench. After the trench is dug, start applying the prepared mixed fertilizer and backfilling the loose soil, or backfill after a layer of soil and fertilizer or a layer of fertilizer and soil are fully mixed. The mixed fertilizer formula is 1000 kg / mu of organic fertilizer, 250 kg / mu of 42% potassium sulfate compound fertilizer, 10 kg / mu of urea, 1000 mL / mu of nano selenium fertilizer and 5000 to 6000 kg / mu of old rice husks.

[0034] The temperature suitable for the growth of praecox is 15℃~26℃, and the air humidity is 70~85%. If the humidity is too low, spray water appropriately. If the temperature is too high, and the temperature on the trough surface exceeds 28℃, you can spread a layer of straw on the trough surface. If the temperature on the trough surface exceeds 30℃, build a small arch shed on the basis of a layer of straw on the trough surface, and spray cooling agent on the shed surface, which can reduce the temperature by 8~12℃. And according to the humidity in the trough, spray water appropriately to reduce the temperature. From mid-June to mid-August, whip shoots will grow one after another. When the whip shoots grow to about 40cm, dig out the edible part of the front 20cm of the whip shoots.

[0035] This method can produce about 110kg of fresh bamboo shoots per mu. After the bamboo shoots are harvested, the bamboo forest is tended according to the conventional method, which will not affect the normal growth of the bamboo forest and the normal production of bamboo shoots next year.

[0036] Example 3

[0037] Select a bamboo forest with natural bamboo shoots. After the spring bamboo shoots are harvested and the mother bamboos are reasonably kept to 800-1000 bamboos per mu, select a bamboo forest open space next to the 2-3 year old mother bamboo in late April. Dig a trench 7-10 cm deep and 30-40 cm wide along the bamboo whip or contour line at a distance of about 30 cm from the mother bamboo. The length of the trench is determined according to the actual situation. The length of the short trench is determined by the distance between the two mother bamboos, and the long trench is determined according to the demand, but other mother bamboos will be skipped in the middle of the trench. After the trench is dug, start applying the prepared mixed fertilizer and backfilling the loose soil, or backfill after a layer of soil and fertilizer or a layer of fertilizer or fertilizer and soil are fully mixed. The mixed fertilizer formula is 2000 kg / mu of organic fertilizer, 200 kg / mu of 42% potassium sulfate compound fertilizer, 10 kg / mu of urea, 1000 mL / mu of nano selenium fertilizer and 5000-6000 kg / mu of old rice husks. The temperature suitable for the growth of praecox is 15℃~26℃, and the air humidity is 70~85%. If the humidity is too low, spray water appropriately. If the temperature is too high, and the temperature on the trough surface exceeds 28℃, you can spread a layer of straw on the trough surface. If the temperature on the trough surface exceeds 30℃, build a small arch shed on the basis of a layer of straw on the trough surface, and spray cooling agent on the shed surface, which can reduce the temperature by 8~12℃. And according to the humidity in the trough, spray water appropriately to reduce the temperature. From mid-June to mid-August, whip shoots will grow one after another. When the whip shoots grow to about 40cm, dig out the edible part of the front 20cm of the whip shoots.

[0038] This method can produce about 30kg of fresh bamboo shoots per mu. After the bamboo shoots are harvested, the bamboo forest is tended according to the conventional method, which will not affect the normal growth of the bamboo forest and the normal production of bamboo shoots next year.

[0039] Example 4

[0040] Select a bamboo forest with natural bamboo shoots. After the spring bamboo shoots are harvested and the mother bamboos are reasonably kept to 800 to 1000 bamboos per mu, select a bamboo forest open space next to the 4-year-old mother bamboo in late April. Dig a trench 30 to 40 cm deep and 30 to 40 cm wide along the bamboo whip or contour line at a distance of about 30 cm from the mother bamboo. The length of the trench is determined according to the actual situation. The length of the short trench is determined by the distance between the two mother bamboos, and the long trench is determined according to the demand, but other mother bamboos will be skipped in the middle of the trench. After the trench is dug, start applying the prepared mixed fertilizer and backfilling the loose soil, or backfill after a layer of soil and fertilizer or a layer of fertilizer or fertilizer and soil are fully mixed. The mixed fertilizer formula is 2000 kg / mu of organic fertilizer, 200 kg / mu of 42% potassium sulfate compound fertilizer, 10 kg / mu of urea, 1000 mL / mu of nano selenium fertilizer and 5000 to 6000 kg / mu of old rice husks. The suitable temperature for the growth of praecox is 15℃-26℃, and the air humidity is 70-85%. If the humidity is too low, spray water appropriately. If the temperature is too high, and the temperature on the trough surface exceeds 28℃, you can spread a layer of straw on the trough surface. If the temperature on the trough surface exceeds 30℃, build a small arch shed on the basis of a layer of straw on the trough surface, and spray cooling agent on the shed surface, which can reduce the temperature by 8-12℃. And according to the humidity in the trough, spray water appropriately to reduce the temperature. From mid-June to mid-August, whip shoots will grow one after another. When the whip shoots grow to about 40cm, dig out the edible part of the front 20cm of the whip shoots.

[0041] This method can produce about 100 kg of fresh bamboo shoots per mu. After the bamboo shoots are harvested, the bamboo forest is tended according to the conventional method, which will not affect the normal growth of the bamboo forest and the normal production of bamboo shoots next year.

[0042] Comparative Example 1 Experiment on the Effect of Fertilization with Different Formulas on Bamboo Shoot Yield

[0043] At the end of April, a bamboo forest vacant lot next to a 2-3 year old mother bamboo was selected, and a trench 40 cm deep, 40 cm wide and 200 cm long was dug manually along the bamboo whip direction 30 cm away from the mother bamboo, and different formula fertilizers were applied. Other production management measures were the same as in Examples 1 to 4.

[0044] Set up 9 treatments of formula fertilizer:

[0045] Treatment 1: 1000kg / mu of organic fertilizer, 150kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0046] Treatment 2: 1000kg / mu of organic fertilizer, 200kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0047] Treatment 3: 1000kg / mu of organic fertilizer, 250kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0048] Treatment 4: 2000kg / mu of organic fertilizer, 150kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0049] Treatment 5: 2000kg / mu of organic fertilizer, 200kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea and 5000-6000kg / mu of old rice husk were fully mixed;

[0050] Treatment 6: 2000kg / mu of organic fertilizer, 250kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0051] Treatment 7: 3000kg / mu of organic fertilizer, 150kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0052] Treatment 8: 3000kg / mu of organic fertilizer, 200kg / mu of 42% potassium sulfate compound fertilizer, 10kg / mu of urea, 1000mL / mu of nano-selenium fertilizer and 5000-6000kg / mu of old rice husk were fully mixed;

[0053] Treatment 9: 3000 kg / mu of organic fertilizer, 250 kg / mu of 42% potassium sulfate compound fertilizer, 10 kg / mu of urea, 1000 mL / mu of nano-selenium fertilizer and 5000-6000 kg / mu of old rice husk were fully mixed.

[0054] The results are shown in Table 1. When the same amount of organic fertilizer is used, the yield of bamboo shoots increases with the increase of compound fertilizer. However, the increase is larger under low-level organic fertilizer (1000kg / mu) and smaller under high-level organic fertilizer (2000-3000kg / mu). When the same amount of compound fertilizer is used, the yield of bamboo shoots increases with the increase of organic fertilizer. However, the increase is larger under low-level compound fertilizer (150kg / mu) and smaller under high-level compound fertilizer (200-250kg / mu). Under the conditions of 2000kg / mu and 3000kg / mu of organic fertilizer, the difference in bamboo shoot yield under the same compound fertilizer treatment is small, indicating that the effect of 2000kg / mu and 3000kg / mu of organic fertilizer does not have statistical significance in data difference. Under the conditions of 200kg / mu and 250kg / mu of compound fertilizer, the bamboo shoot yield of the same organic fertilizer treatment (especially under high-level organic fertilizer conditions) is not much different, indicating that the effect of compound fertilizer dosage of 200kg / mu and 250kg / mu is similar. In the case of taking into account both yield and cost, treatment 5 formula fertilizer is preferred in production.

[0055] Table 1 Yield of bamboo shoots under different fertilization formulas (kg / mu)

[0056] 1 2 3 4 5 6 7 8 9 Yield 73.8e 100.8d 114.0c 111.5c 131.5a 136.2a 120.7b 137.1a 139.4a

[0057] In Table 1, lowercase letters indicate significant differences at the 0.05 level.

[0058] Comparative Example 2 Experiment on the influence of different trough depths on bamboo shoot yield

[0059] At the end of April, a bamboo forest vacant lot next to a 2-3 year old mother bamboo was selected. A 40 cm wide and 200 cm long trench was dug manually along the direction of the bamboo whip at a distance of about 30 cm from the mother bamboo. Three treatments were set with trench depths of 10 cm, 30 cm, and 40 cm. The formula fertilizer applied was the formula fertilizer for treatment 5 selected in comparative example 1. Other production management measures were the same. The results are shown in Table 2. When the trench depth was more than 30 cm, the bamboo shoot yield was significantly increased. This is highly consistent with the bamboo whip attachment stratum and growth characteristics, and in Table 2, lowercase letters indicate significant differences at the 0.05 level.

[0060] Table 2 Yield of bamboo shoots at different trough depths (kg / mu)

[0061] Groove depth 10cm Groove depth 30cm Groove depth 40cm Yield 35.2c 116.2b 137.1a

[0062] Comparative Example 3 Experiment on the influence of different maximum temperatures on bamboo shoot yield

[0063] At the end of April, a bamboo forest open space next to a 2-3 year old mother bamboo was selected. A 40 cm deep, 40 cm wide and 200 cm long trench was dug manually along the direction of the bamboo whip at a distance of about 30 cm from the mother bamboo. The formula fertilizer applied was the formula fertilizer for treatment 5 selected in comparative example 1. The maximum temperature of the groove surface was set to not exceed 4 treatments of 24°C, 26°C, 28°C and 30°C. Other production management measures were the same. The results are shown in Table 3. When the temperature exceeds 28°C, the yield of bamboo shoots drops significantly. When the temperature exceeds 30°C, bamboo shoots need to be dug in a hurry, otherwise the bamboo shoots will basically rot.

[0064] Table 3 Bamboo shoot yield at different maximum temperatures on the trough surface (kg / mu)

[0065] 24℃ 26℃ 28℃ 30℃ Yield 142.9a 121.8b 73.2c 29.4d

[0066] Comparative Example 4 Experiment on the influence of mother bamboos of different years on bamboo shoot yield

[0067] At the end of April, a bamboo forest clearing next to a 2-year, 3-year, and 4-year-old mother bamboo was selected, and a 40-cm-deep, 40-cm-wide, and 200-cm-long trench was dug manually along the bamboo whip direction at a distance of about 30 cm from the mother bamboo. The formula fertilizer applied was the formula fertilizer for treatment 5 selected in comparative example 1. Other production management measures were the same. The results are shown in Table 4. The lowercase letters in Table 4 indicate significant differences at the 0.05 level. The bamboo shoot production of 2-3-year-old mother bamboos was significantly higher than that of mother bamboos over 4 years old.

[0068] Table 4 Yield of bamboo shoots from mother bamboo in different years (kg / mu)

[0069] 2 years 3 years 4 years Yield 123.8a 128.9a 95.1b

[0070] Comparative Example 5 Comparison of the main components of nucleosides in bamboo shoots with and without selenium fertilizer

[0071] The production of bamboo shoots of 2-3-year-old Phyllostachys praecox in summer and autumn was carried out by the method shown in Examples 1-4, and the formula fertilizer applied was the formula fertilizer of Treatment 5 selected in Comparative Example 1, and all other operations were exactly the same except that no selenium fertilizer was applied during the comparison. The results are shown in Table 5, and the contents of guanosine, uracil, and adenosine, the main components of nucleosides, in bamboo shoots treated with selenium fertilizer were higher than those in bamboo shoots not treated with selenium fertilizer.

[0072] Table 5 Contents of main components of nucleosides in bamboo shoots with and without selenium fertilizer

[0073]

[0074]

[0075] Although the above embodiment describes the present invention in detail, it is only a part of the embodiments of the present invention, not all of the embodiments. People can also obtain other embodiments based on this embodiment without creativity, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A method for producing bamboo shoots from Phyllostachys praecox in summer and autumn, characterized in that: The following steps are involved: After harvesting spring bamboo shoots, trenches are set in a bamboo forest space at a distance from the mother bamboos, mixed fertilizer and soil are filled into the trenches, and the growth environment of the mother bamboos is adjusted, including adjusting the temperature to 15-26°C and the humidity to 70-85%.

2. The method according to claim 1, characterized in that: Including after harvesting spring bamboo shoots, the number of standing mother bamboos is 800 to 1,000 per mu.

3. The method according to claim 1 or 2, characterized in that: The method comprises selecting a bamboo forest open space next to a 2- to 3-year-old mother bamboo at the end of April to set the groove, and the groove is set along the direction of the bamboo whip or the contour defense line.

4. The method according to claim 3, characterized in that: The groove is 20 to 30 cm away from the mother bamboo, 30 to 40 cm deep and 30 to 40 cm wide.

5. The method according to claim 3, characterized in that: When filling the trench, the mixed fertilizer is filled in a layer by a layer of soil, or the mixed fertilizer and soil are mixed evenly and then directly backfilled.

6. The method according to claim 1 or 5, characterized in that: The components of the mixed fertilizer include organic fertilizer, agricultural waste, nitrogen fertilizer, phosphorus fertilizer, potassium fertilizer and selenium fertilizer.

7. The method according to claim 1 or 5, characterized in that: The mixed fertilizer comprises: 2000-3000 kg / mu of organic fertilizer, 200-250 kg / mu of 42% potassium sulfate compound fertilizer, 10-15 kg / mu of urea and 5000-6000 kg / mu of old rice husk.

8. The method according to claim 1, characterized in that: After the trench is filled, if the temperature on the trench surface exceeds 28°C, straw is spread on the trench surface to reduce the temperature; if the temperature on the trench surface exceeds 30°C, an arch shed is built on the straw and a cooling agent is sprayed on the shed surface.

9. Use of the method according to any one of claims 1 to 8 in the year-round production of bamboo shoots of Phyllostachys praecox.

10. A method for producing bamboo shoots of Phyllostachys praecox all year round, characterized in that: The method comprises producing summer and autumn bamboo shoots by the method according to any one of claims 1 to 8, and continuing to cultivate the summer and autumn bamboo shoots after they are harvested, so as to harvest winter bamboo shoots and spring bamboo shoots.

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