Method for wholly and directly returning corn straw into field

Abstract

The invention provides a method for wholly and directly returning corn straw into field. The method comprises the following steps: (1) collecting straw after corns are harvested and smashing the straw; (2) digging a cellar in harvested corn field; (3) putting the straw treated in the step (1) into the cellar and adding a biological agent to ferment under normal temperature to obtain a fermented product; (4) adding livestock excrement and plant ash according a weight ratio of the fermented product to the livestock excrement to the plant ash as 10 to 3 to 1, evenly mixing, covering with standby soil and fermenting for 10d to obtain a straw fermented organic fertilizer which is used for being returned to field. The method disclosed by the invention effectively solves the problems of tight crop rotation caused by wholly and directly returning the straw to field between double cropping, difficulty in cuttage sowing of next-stubble crops, nitrogen battle between seedlings and straw decomposition, yellowing, seedling weakness and the like; the straw can be returned to field directly; the method can be widely applied to returning crop straw to field.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and relates to a method for returning all corn stalks to the field on the spot. The method returns the corn stalks to the field when they are fully decomposed, and the method is easy to implement and easy to operate. Background technique [0002] Chinese farmers have a long history of using crop stalks, but due to the low level of agricultural production and low output in the past, the amount of stalks was small. Except for a small amount of straw used for gaskets, feeding livestock, and some used for composting, most of the straw was used as fuel. Lost. With the development of agricultural production, since the 1980s, China's grain output has increased significantly, and the amount of straw has also increased. In addition, the promotion of firewood-saving and coal-saving technologies, the popularization of coal burning and the use of liquefied petroleum gas have resulted in a large amou...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem that corn stalks are difficult to be decomposed by microorganisms in the natural state due to the high C / N of corn stalks in the prior art, and the temperature in northern areas is low, so it is difficult to decompose corn stalks, which leads to corn stalks being returned to the field. It takes a long time to be decomposed and transformed in the soil, and it is difficult to use it as a fertilizer source for crops in the current season.