Method for improving moderate saline-alkali soil and planting pasture

Abstract

The invention discloses a method for improving moderate saline-alkali soil and planting pasture, which comprise the following steps of: (1) excavating ditches to eliminate alkali: irrigating the ditches or waiting for raining to irrigate the ditches so as to promote salt in the soil to permeate into deep soil along with water, and reducing the salt in the plough layer so as to reduce the salt content of the soil; (2) irrigating to reduce salt: reducing salt by directly irrigating salt water in winter and flooding fresh water in spring; (3) applying fertilizers: after irrigating fresh water in spring, and applying fertilizers to the depth of 20-30 cm according to the fertilizing amount of 180-220 kg per acre; (4) sowing pasture: sowing pasture according to the sowing amount of 0.5-1 kg per acre; and (5) returning straw to soil: returning pasture straw to soil in autumn. In the invention, the salt content of the saline-alkali soil can be reduced in a way of irrigating to reduce salt, the improved saline-alkali soil can be used for plating various kinds of pasture and has high yield and long lasting effect, and sustainable economical benefits and ecological benefits can be obtained for long term.

Description

technical field [0001] The invention provides a method for improving moderately saline-alkali land and planting pasture, belonging to the technical field of saline-alkali land improvement and salt-tolerant plant planting. Background technique [0002] my country has about 27 million hm 2 Saline-alkali land, of which 7 million hectares have been cultivated 2 , and nearly 20 million hm 2 Barren saline-alkali land has not yet been developed and utilized, and these saline-alkali land are mainly distributed in Northeast China, North China, South China, Xinjiang and Inner Mongolia. About 4 million hm in North China 2 The saline-alkali land is mainly distributed in the Huangzhunhai Plain. At the same time, saline-alkali land is also an important backup land resource. The rational development and utilization of saline-alkali land plays an important role in alleviating the increasingly tense relationship between man and land brought about by social and economic development, stabi...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned prior art, the present invention provides a method for improving moderately saline-alkali land and planting forage grass, which effectively solves the problems of difficult seedling establishment, single variety, and low yield and quality of traditional pasture planting in saline-alkali land.

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