Soil improvement method under crop rotation system of wheat-corn in tide soil region of North China

Abstract

The invention discloses a soil improvement method under a crop rotation system of wheat-corn in a tide soil region of North China. The method aims at solving the technical problems of shallow soil tillage layer and low soil water and fertilizer conservation capacity. The method comprises the following steps: in a wheat planting season, corn stalks of the last season are crushed and the whole amount of straws is returned to the field combined with soil rotating tillage. The depth of the rotating tillage is controlled to 15-18 centimeters, and basal fertilizer especially for the wheat is appliedwhile the wheat is sowed. Urea is applied to wheat during green-back period, and watering is carried out in time after the application. In a corn planting season, the wheat stalks of the last seasonare crushed and returned to the field in full amount in combination with the deep loosening of soil spacing. The distances between deep loosening ditches are determined according to the distances between the sowing rows of the corn. Fertilizer especially for the corn is applied while the corn is sowed. The corn is sowed between two adjacent deep lessening ditches or tillage-free areas in the ditches. The method can improve the structure of soil arable layers, promote the expansion of the arable layers, improve the production performance of the soil, ensure the uniform distribution of nutrientsbetween arable layers, promote the growth of crops, and improve the unit yield.

Description

technical field [0001] The invention relates to the technical field of soil cultivation, in particular to a soil improvement method under the wheat-corn rotation system in the fluvo-aquic soil area of ​​North China. Background technique [0002] The North China Plain is a plain formed by the long-term deposition of the alluvial deposits of the Yellow River, Huaihe River and Haihe River, so it is also called the Huanghuaihai Plain. Its soil type is mainly fluvo-aquic soil developed from loess alluvial deposits. In the process of soil formation, it is deeply affected by parent material, groundwater, and cultivation and maturation. Most of the fluvo-aquic soils contain calcium carbonate, have a lime-like reaction, high base saturation, low organic matter content, and great potential for soil improvement. [0003] The Huang-Huai-Hai Plain is an important grain production base in my country. Its vast plains, distinct seasons, and sufficient sunlight are very conducive to the gro...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a soil improvement method under the wheat-corn rotation system in the fluvo-aquic soil area of ​​North China, which is suitable for the Huang-Huai-Hai flu-flux soil area in Henan Province, in order not to change the overall planting system and the premise of not affecting grain production To solve the problems of shallow soil plow layer, compact structure, and reduced soil water and fertilizer storage capacity caused by long-term no-tillage and rotary tillage