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Method for reducing amount and increasing efficiency of chemical fertilizer in paddy field

A paddy field and chemical fertilizer technology, applied in the field of paddy field chemical fertilizer reduction and efficiency increase, can solve the problems of unfavorable green manure emergence, growth, and poor moisture conservation and heat preservation in winter slack paddy fields, so as to save seeds and labor costs, reduce the cost of agricultural materials, and reduce the use of Effect

Active Publication Date: 2020-03-31
HANZHONG AGRI SCI INST SHAANXI RICE RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Rotation of paddy and dry crops, the climate is dry and the temperature is low in the dry season, and the effect of moisture conservation and heat preservation in the winter slack rice field is poor, which is not conducive to the emergence and growth of green manure

Method used

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  • Method for reducing amount and increasing efficiency of chemical fertilizer in paddy field
  • Method for reducing amount and increasing efficiency of chemical fertilizer in paddy field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Test design

[0023] On September 20, 2017, milk vetch seeds and calcium superphosphate were mixed evenly according to the mass ratio of 1:2, and then artificially spread. On May 5, 2018, milk vetch with seeds and milk vetch in full flowering stage were plowed back together with the rice straw of the previous season. Tian, ​​on May 15, 2018, rice was artificially planted, and the amount of fertilizer applied during the whole growth period was N, P 2 o 5 、K 2 O is 12kg / 66.7m respectively 2 、6kg / 666.7m 2 、7kg / 666.7m 2 , On September 23, 2018, the harvested rice stalks were crushed and covered the ground, and the milk vetch seedlings emerged naturally without sowing. On April 23, 2019, the milk vetch in full flowering period was turned over and returned to the field together with the rice straw of the previous season. On May 10, 2019 Rice is artificially transplanted every day, and the amount of fertilizer applied during the whole growth period is N, P 2 o 5 、K 2 O...

Embodiment 2

[0037] On September 20, 2017, milk vetch seeds and calcium superphosphate were mixed evenly according to the mass ratio of 1:3, and then artificially spread. On May 5, 2018, milk vetch with seeds and milk vetch at full flowering stage were plowed back together with the rice straw of the previous season. Tian, ​​on May 15, 2018, rice was artificially planted, and the amount of fertilizer applied during the whole growth period was N, P 2 o 5 、K 2 O is 8.4kg / 66.7m respectively 2 、6kg / 666.7m 2 、7kg / 666.7m 2 , the fertilization method is nitrogen base fertilizer and topdressing fertilizer ratio of 7:3, all phosphorus and potassium fertilizers are applied in the base, and the amount of base fertilizer is N, P 2 o 5 、K 2 O is 5.88kg / 66.7m respectively 2 、6kg / 666.7m 2 、7kg / 666.7m 2 , On September 23, 2018, the harvested rice stalks were crushed and covered the ground, and the milk vetch seedlings emerged naturally without sowing. On April 23, 2019, the milk vetch in full flow...

Embodiment 3

[0039] Test design

[0040] Treatment 1: sowing milk vetch every year, the variety of milk vetch is selected as Xiangzi No. 7, and the rest of the agricultural operations are the same as in Example 2;

[0041] Treatment 2: This treatment is the same as in Example 2.

[0042] See Table 2 for the comparison of economic benefits between sowing milk vetch every year and planting milk vetch every other year:

[0043] Table 2

[0044]

[0045] The two-year total paddy output of the two treatments is similar, but the cost per mu of land for treatment 2 is 80 yuan lower than that of treatment 1, that is, the method provided by the invention fertilizes the soil, saves nitrogen fertilizer input, and has a significant impact on rice yield. There is also a certain improvement effect. Compared with planting milk vetch year after year, it also reduces the cost and increases income at the same time.

[0046] The early maturing species of milk vetch used in the present invention is the ...

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Abstract

The invention discloses a method for reducing the amount and increasing the efficiency of chemical fertilizer in a paddy field. Specifically, the method comprises the steps: spreading a mixture of Astragalus sinicus seeds with calcium superphosphate evenly in the paddy field before rice harvest, crushing straw, covering the paddy field during rice harvest, performing ditching in the surrounding area in time so as to avoid autumn rain, plowing the field together with rice stalks of a previous season so as to return the rice stalks to the field at the flowering period of Astragalus sinicus, performing soaking for a period of time, and planting rice. For the current problems of general abandonment of paddy fields or rice-wheat paddy-upland rotation areas and poor cold resistance of green manure of paddy fields in southwestern regions in winter, the cultivation technique is provided; and according to the technique, cold resistance is achieved through stalk mulching, rice growth is promoted through green manure, meanwhile investment of chemical nitrogen fertilizer for rice planting is reduced, and pollution reduction and rice income increase are achieved.

Description

technical field [0001] The invention relates to the technical field of agricultural production, and more specifically relates to a method for reducing the amount of chemical fertilizer in paddy fields and increasing efficiency. Background technique [0002] Crop rotation and fallow system is an effective way to solve the sustainable development of modern agriculture. Green manure has been widely used as an ideal crop for fertilizing soil during the fallow period. Rice-oil or rice-wheat rotation is an important agricultural planting system in my country. In recent years, due to labor shortage, seasonal winter fallow, direct abandonment of rice straw has become a common phenomenon. [0003] In rice-oil or rice-wheat rotation areas, the winter fallow period of paddy fields is long and the fallow area continues to expand, and the planting potential of green manure milk vetch becomes larger. The utilization of paddy field straw and green manure resources is an effective measure...

Claims

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Application Information

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IPC IPC(8): A01G22/22A01G22/40A01C21/00
CPCA01G22/22A01G22/40A01C21/005
Inventor 吴玉红郝兴顺田霄鸿崔月贞宁鹏刘勇张春辉吴军舰王亚军
Owner HANZHONG AGRI SCI INST SHAANXI RICE RES INST
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