Cotton plantation method suitable for saline-alkali dry land

Abstract

The invention provides a cotton plantation method suitable for a saline-alkali dry land. The method comprises the following steps: digging multiple sawing trenches arranged in parallel in an arable land; respectively arranging a first ridge and a second ridge whose directions are consistent with the direction of the sawing trenches at the two sides of each sawing trench, wherein only one ridge is arranged between every two adjacent plantation trenches; and sawing cotton seeds in the sawing trenches, and carrying out film mulching on all the sawing trenches and the second ridges of every two adjacent sawing trenches. The method provided by the invention can effectively utilize limited precipitation in the plantation period of cotton, accumulates rainfall in the sawing trenches, and has moisture increasing, salt pressing and seed retention effects. At the same time, the evaporation amount of the large ridge of nudation is large, salt in soil is concentrated towards the ridges, salt threats at the roots of cotton seedlings are reduced, the rate of emergence of the cotton seedlings planted in the saline-alkali dry land of a coastal region is greatly improved, and the output of cotton is also substantially improved.

Description

technical field [0001] The invention relates to the field of cotton planting, in particular to a cotton planting method suitable for saline-alkaline dry land. Background technique [0002] There are a large number of saline-alkali drylands in the Bohai Rim region. There are various types of soil saline-alkali in this area. The spring sowing period is dry and rainless, and freshwater resources are severely scarce. The utilization rate of land resources is low, and the grain output is low and unstable. Cotton has strong adaptability to drought and salt, and has the title of pioneer crop in saline-alkaline land. It can grow normally in soil with a salt content of less than 0.3%. As a result, a large amount of cotton is grown in the area. [0003] At present, the cotton sowing method widely used in coastal saline-alkaline dry land is mainly direct seeding and film-covering planting mode. Row, small row width 40-60cm, large row width 60-80cm. This method has the following disa...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: after the emergence of cotton seedlings, a small amount of rainwater falling on the mulch film cannot penetrate into the soil in time due to the insulation effect of the mulch film, and is stored on the mulch film or flows to the bare land between the rows, becoming invalid precipitation, making spring The limited rainwater does not play the role of replenishing moisture and salt in the roots of cotton seedlings, and the salt content of the soil cannot be improved, resulting in unsatisfactory cotton seedling emergence and seedling growth rates, and low cotton yield

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