A cultivation method for reducing the risk of green manure production in rice fields in winter

A winter green manure and cultivation method technology, applied in the field of plant cultivation, can solve problems such as difficulties in seedling emergence, affecting the sowing and emergence of green manure in winter, and late rice harvest, so as to reduce the risk of low temperature and alleviate the contradiction between rice harvest and green manure sowing time Effect

Active Publication Date: 2021-02-19
INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the main rice production areas in the middle and lower reaches of the Yangtze River and south of the Yangtze River, the rice fields in the Jianghuai region have relatively low light and heat conditions from winter to spring, and on the other hand, the rice harvest is late, and excessive field straw accumulation affects the sowing and emergence of green manure in winter; The winter green manure production caused by the above reasons has obstacles such as difficulty in seedling emergence and low temperature in winter, which makes the winter green manure production in the Jianghuai region have certain risks.

Method used

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  • A cultivation method for reducing the risk of green manure production in rice fields in winter
  • A cultivation method for reducing the risk of green manure production in rice fields in winter
  • A cultivation method for reducing the risk of green manure production in rice fields in winter

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Embodiment 1

[0051] 1. The first crop of winter green manure is single crop rice, which is usually harvested at the end of October and early November.

[0052] 2. The winter green manure variety is sweet potato. Choose about 15-20 days before harvest, that is, around October 12, the rice bottom of the vetch is sown, and the sowing rate is 2kg / mu.

[0053] 3. When single-season rice is harvested, after the stubble is left at a height of 35 cm, the amount of remaining straw returned to the field after the stubble is about 360 kg. When harvesting, it will be cut into large sections of more than 30 cm and evenly sprinkled on the field.

[0054] 4. Ditch and cover soil for irrigation and drainage after single-crop rice harvest: The width of the ditch is 20 cm, the depth of the ditch is 13 cm, the width of the furrow is 250 cm, and the thickness of the furrow surface is 1.4 cm. For sandy fields with high terrain and good drainage, the ditch can be shallower and sparser, while flat terrain and c...

Embodiment 2

[0061] 1. The first stubble of green manure in winter is double-cropping rice, and the amount of straw returning to the field is about 240kg.

[0062] 2. The winter green manure variety is milk vetch.

[0063] 3. When double-cropping rice is harvested, leave 25-30 cm high stubble of straw, and return the remaining straw to the field after the stubble is about 240 kg. When harvesting, it will be cut into 5-10 cm small pieces and evenly sprinkled on the field.

[0064] 4. Ditch and cover soil for irrigation and drainage after single-crop rice harvest: The width of the ditch is 20 cm, the depth of the ditch is 13 cm, the width of the furrow is 250 cm, and the thickness of the furrow surface is 1.4 cm. For sandy fields with high terrain and good drainage, the ditch can be shallower and sparser, while flat terrain and clay fields should be deeper and denser. If the weather is dry for a long time after sowing and ditching, furrow irrigation should be carried out to resist drought a...

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Abstract

The invention discloses a cultivation method for reducing the risk of green manure production in rice fields in winter. The operation steps are as follows: (1) According to the local long-term climate historical data, calculate the climate risks such as green manure sowing germination and later vegetative growth in different periods of winter green manure, and select the appropriate winter green manure sowing date. (2) Select different straw treatment methods, winter green manure seeding methods and seeding rates according to the biomass of the previous rice straw field cover. (3) After sowing green manure in winter, spread 4-6 kg of potassium chloride and 0.5 kg of zinc sulfate per mu evenly; The depth is 10 to 15 cm, and the thickness of the covering soil on the furrow surface between adjacent horizontal ditches is 1.3 to 1.6 cm. By reducing the risk of green manure cultivation in winter, the invention increases the yield and yield stability of green manure for many years, can better play the role of green manure in winter to fertilize soil, replace chemical fertilizers, improve the environment, and improve the yield of subsequent rice crops.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and relates to a cultivation method for reducing the risk of green manure production in rice fields in winter, in particular to a cultivation technology for reducing the risk of green manure production in rice fields in the Jianghuai region. Background technique [0002] In eastern my country, the rice planting areas north of the Yangtze River and south of the Huaihe River, especially in the north of the Jianghuai River and close to the Huaihe River (the central and northern part of the Jianghuai River to the Huaihe River), have higher light and heat conditions from autumn to spring than those in the north of the Huaihe River. Yunying and other winter green manure. Compared with the main rice producing areas in the middle and lower reaches of the Yangtze River and south of the Yangtze River, the rice fields in the Jianghuai region have relatively low light and heat conditions from winter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/00
CPCA01G22/00
Inventor 唐杉武际王允青王慧韩上李敏胡润程文龙曹卫东
Owner INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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