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Rice straw returning method

A technology of rice straw and straw, which is applied in the agricultural field, can solve the problems of less nutrient release and slow decomposing of rice straw returning to the field, and achieve the effects of increasing the decomposing rate, good ventilation effect and large gaps

Active Publication Date: 2020-11-06
FARMING & CULTIVATION RES INST OF HEILONGJIANG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of slow decomposing and less nutrient release of rice straw returning to the field

Method used

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  • Rice straw returning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for returning rice stalks to the field in this embodiment is carried out according to the following steps:

[0031] 1) After the rice is harvested in the rice planting field of Dongning County, the rice straw is crushed and placed in a compost tank, and then the soil in the rice field where the straw is located is mixed with the crushed straw to form a pile; the top of the pile faces inward Depression, add water to the depression, soak the straw, leave it for 2 days, and keep the humidity of the straw in the pile at 20-30%, then add animal manure; mix, then add water to make the water content of the straw pile reach 65%, and carry out composting fermentation. When the temperature in the pile reaches 60°C, turn over the pile. After 15% of the pile is decomposed, return part of the pile to the central area of ​​the paddy field, and the returned pile contains decomposed straw;

[0032] The added amount of soil in the paddy field is 8% of the heap weight;

[0033]...

Embodiment 2

[0037] In this embodiment, rice-corn crop rotation is carried out after the straw is returned to the field. Crop rotation method: after the rice is harvested in the current year, return the rice stalks to the field according to the method of Example 1. After the corn is sown in the second year, apply urea (11kg / mu) and special corn fertilizer to the field, and plant rice in the third and fourth years , and apply organic fertilizer (30kg / mu) after rice transplanting for one week.

Embodiment 3

[0039] In this embodiment, rice-soybean crop rotation is carried out after the straw is returned to the field.

[0040] After the rice is harvested in the current year, return the rice stalks to the field. In the second year, before the soybeans are sown, apply soybean-specific fertilizers (applied according to the instructions). In the third year, rice is planted, and then soybeans are planted for one year. The sequence planting of the year; Wherein, before planting paddy rice, adopt the method for claim 1 in paddy field to carry out returning the straw in other paddy fields, and apply urea and compound fertilizer, the amount of urea and compound fertilizer applied will be greater than that of corn Application rate before sowing.

[0041] After the rice straw of Example 1 was returned to the field before November of that year, the returned straw was taken every 20 days for a total of 3 times, washed and dried, and the weight loss rate of the straw was measured. And measure t...

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Abstract

The invention discloses a rice straw returning method, relates to the field of agriculture, and aims to solve the problems of slow decomposition and less nutrient release of rice straw returning. In the composting process, rice field soil and straw are mixed and composted, different straw smashing length areas are arranged in the compost body, and the problems that rice straw returning is slow indecomposition and low in nutrient release, so that the rice growth state is poor, and the yield is low are solved in a staged straw returning mode. Under the condition of not adding a straw decomposition agent, the decomposition rate of the straw can be effectively increased, and nutrients of the straw are fully released. The method is applied to the field of straw returning.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for returning rice straw to the field. Background technique [0002] At present, preventing straw burning, encouraging straw returning to the field, protecting the environment, and developing ecological agriculture have become the main development directions. Straw returning to the field can increase soil organic matter, humic acid and minerals, promote soil microbial reproduction and the formation of soil aggregate structure, improve soil fertility, improve crop nutritional conditions, promote crop growth, and improve soil utilization. However, returning straw directly to the field has problems such as imbalance of soil carbon and nitrogen ratio, accumulation of organic acid, difficulty in tillage and sowing, and poor growth of new seedlings. Straw composting is to turn crop straws into high-quality organic fertilizers. It not only solves agricultural waste straws, but also ...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G22/22A01G22/20A01G22/40
CPCA01B79/02A01G22/22A01G22/20A01G22/40Y02W30/40
Inventor 孙羽王麒冯延江宋秋来曾宪楠鲁鑫蕊金梁王曼力张小明项洪涛夏天舒赵杨谢婷婷孙兵
Owner FARMING & CULTIVATION RES INST OF HEILONGJIANG ACADEMY OF AGRI SCI
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