Green manure returning and fertilizing method

Abstract

The invention discloses a green manure returning and fertilizing method. The method comprises the following steps of S1, artificially and uniformly sowing common vetch seeds in a field at the end of July to the first ten-day period of August 10-15 days before highland barley is about to be harvested in a valley agricultural area with the altitude of 3800m or below in Tibet; S2, in the first ten days of October, cutting the whole plant of flourishing common vetch into small sections or performing crushing, performing uniform sowing, performing complete field returning, and then performing turning and pressing with the turning and pressing depth of not less than 20cm; S3, leveling land, and performing flood irrigation for 2-3 times to promote decomposition of green manure; S4, in April of the next year, performing intensive cultivation, preparing soil, planting spring highland barley, and strengthening field weed removal and water and fertilizer management; and S5, in the first ten days of August, after the previous crop of highland barley is harvested, fully using hydrothermal resources in the later growth period of the preceding crop, performing ploughing and soil preparation in time for common vetch multiple cropping, and repeating steps from S1 to S3. According to the green manure returning and fertilizing method, reduction of nitrogen fertilizer input is of great significance in slowing down agricultural non-point source pollution.

Description

technical field [0001] The invention belongs to the technical field of agricultural planting, and in particular relates to a method for returning green manure to the field for fertilization. Background technique [0002] Green manure is a fertilizer made from green plant matter. Green manure is a nutrient-complete biological fertilizer source. Planting green manure is not only an effective way to increase fertilizer sources, but also has a great effect on improving soil. However, in order to give full play to the effect of increasing the production of green manure, it must be applied reasonably. [0003] With the continuous development of planting production in Tibet's agricultural areas, the demand for chemical fertilizers is also increasing, and excessive nitrogen input in fertilizers has brought serious agricultural non-point source pollution. Non-point source pollution is of great significance. The production of green manure crops is an effective link for coordinatin...

AI Technical Summary

Problems solved by technology

However, in order to give full play to the effect of increasing the production of green manure, it must be applied reasonably.