Single cropping rice formula fertilization method under green manure and straw synergic field returning

Abstract

The invention provides a single cropping rice formula fertilization method under green manure and straw synergic field returning. The method comprises the following steps that 1, in every September toOctober, milk vetch is sown at the bottom southern rice field rice in an undersow mode, rice mechanical high stubbles are harvested, the stubbles are 30-40 cm high, the other is smashed and returnedto a field, straw is concentrated at the coverage position, the growth seedling stage is stirred up by bamboo poles, and it is ensured that milk vetch seedlings receive sunshine; 2, in the next April,a rotary cultivator is used for performing dry tillage to perform ploughing milk vetch and straw under to great depth to the tillage layer by 15 cm or below; 3, turning, burying and decomposition areperformed till May to June, water feeding and field uniforming are performed, and single cropping rice is planted; 4, at the single cropping rice fertility stage, the total nitrogen phosphorus and potassium nutrient total content is lowered by 30% compared with conventional fertilizer amount, and the content ratio of N to P2O5 to K2O in nitrogen phosphorus and potassium fertilizer is 1:0.3:0.7. Due to milk vetch and straw synergic field returning, the rice nitrogen phosphorus and potassium fertilizer ratio and consumption are controlled, and the purposes that application of the single cropping rice fertilizer nitrogen phosphorus and potassium can be reduced by 30%, and the production can be increased by 2% or above are achieved.

Description

technical field [0001] The invention belongs to the field of formula fertilization of paddy rice in southern China, and more specifically relates to a method for formula fertilization of single-cropping rice in cooperation with green manure and straw returning to the field. Background technique [0002] Chemical fertilizers are important means of agricultural production and the "grain" of food. Chemical fertilizers have played an irreplaceable role in promoting the development of food and agricultural production, but the current excessive use of chemical fertilizers in my country has brought about a series of problems such as soil compaction, acidification, non-point source pollution and ecological balance damage. Rice is the largest grain crop in my country, accounting for about 40% of the total grain output. The area of ​​rice fields in the south accounts for about 82% of the country's total. Therefore, the weight loss and efficiency enhancement of chemical fertilizers in...

AI Technical Summary

Problems solved by technology

[0003] Milk vetch is the most important green manure crop in the south, and rice straw is also the most common organic material. Both are means to fertilize the soil, improve soil fertility, and reduce the amount of chemical fertilizers. High-efficiency fertilization is relatively blind, such as fertilization ratio, fertilization amount, etc.

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