Subsoiling cultivation method of corn stubble

Abstract

The invention relates to a subsoiling cultivation method for corn with stubble, which belongs to the technical field of agricultural production and is completed by the steps of returning high stubble to the field, planting between rows of high stubble and subsoiling with stubble. The invention realizes the safe return of straw to the field, combined with topdressing and deep loosening during the corn growth period, so that the high stubble can be naturally rotted and returned to the field, increasing soil organic matter, fertilizing soil fertility, and making sustainable use of land resources. Realize complete, uniform and strong seedlings, and continuously high-yield, high-quality, and efficient corn production.

Description

technical field [0001] The invention belongs to the technical field of agricultural production and relates to a corn planting method. Background technique [0002] In the existing tillage and cultivation techniques, most of the corn stalks are cut out manually after the corn is harvested, and only the root stubble is left in the soil, and then the root stubble is removed by mechanical stubble removal or rotary tillage. At present, the main problems in the production of the black soil area in the Northeast Plain are the decline of soil fertility. According to reports, the organic matter in the soil decreases by more than 0.01% every year; the second is serious soil erosion, mainly manifested in soil erosion (wind erosion and water erosion). The third is that the cultivated layer of black soil is shallow (13-16cm), and the bottom layer of the plow is thick and hard. Fourth, it is difficult to return corn stalks to the field. There is little effective precipitation during the ...

AI Technical Summary

Problems solved by technology

At present, the main problems in the production of the black soil area in the Northeast Plain are the decline of soil fertility. According to reports, the organic matter in the soil drops by more than 0.01% every year; the second is serious soil erosion, mainly manifested in soil erosion (wind erosion and water erosion).

Fourth, it is difficult to return corn stalks to the field. There is little effective precipitation during the crop growth period. After mechanical harvesting, all straws are returned to the field and cannot be completely decomposed. Decomposition requires a lot of water, and at the same time, it will compete with crop development for water in the soil, affecting the mid-to-late development of corn, and reducing yield. Therefore, it is difficult to maintain high yield and high efficiency

The main disadvantage of the first method is that there is no straw returning to the field, only the crop stubble returning to the field, and the original ridges have been planted for many years. The depth of intertillage does not meet the technical requirements, and a wavy plow bottom layer is formed in the soil below about 15-20cm. , the permeability is poor, affecting the yield increase

The second method belongs to the conservation tillage method. However, due to the influence of precipitation and temperature in the black soil area of ​​the Northeast Plain, under the current soil ecological environment conditions, it is difficult to decompose all the corn stalks in the field within one year, which affects the sowing of preserved seedlings.