METHOD FOR HIGH RICE YIELD BY DEEP PLOWING AND COMPREHENSIVE SOIL NUTRIENT MANAGEMENT IN SOUTH CHINA

摘要

#$%^&*AU2020100519A420200528.pdf#####21 ABSTRACT The present invention provides a method for high rice yield by deep plowing and comprehensive soil nutrient management. The present invention adopts the following cultivation methods for a triple cropping paddy field of a double-cropped rice: performing deep tillage in winter or in an early rice season to moderately expand the paddy field, planting green manure in winter and returning the straw to the field to adequately conserve the paddy field, and cultivating late rice without tillage and performing wetting irrigation and multi-year rotation tillage to use the paddy field in an economical way. Through the triple coordination, the present invention constructs a reasonable plow layer. The present invention overcomes the problems such as shallowing plow layers, acidification and compaction, poor tillability, poor physical and chemical properties, reduced soil storage capacity and poor water and fertilizer retention. The present invention saves energy, protects the soil structure, reduces soil erosion, and preserves soil nutrients. The present invention also increases the depth of the plow layer, improves the soil structure, expands the soil storage capacity, increases the soil nutrient content, and improves water and fertilizer utilization. The present invention establishes a long-term effective management mechanism for the reasonable plow layer of the paddy field and achieves the sustainable high-yield production of rice.