Method for planting crops in saline and alkaline land

Abstract

The invention discloses a method for planting crops in a saline and alkaline land. The method is characterized by comprising the steps as follows: 1), soil is loosened, so that a soil condition facilitating downward infiltration of water salt is formed; 2), salt elimination furrows are arranged, and soil of a raised field is washed with fresh water, so that the water salt flows into the salt elimination furrows and is discharged; 3), soil on the surfaces of the salt elimination furrows is eliminated, the usage amount of a gypsum modifying agent is determined by detecting the pH value of the soil, then turfy soil, a humic acid and a plant growth regulator are laid on the surface of the soil, and finally, alkaline resisting plants are planted in the salt elimination furrows, so that the soil environment is improved; 4), the soil of the raised field is fertilized, and then the fertilized soil is irrigated, so that a fertilizer is infiltrated into the soil, and absorption is facilitated; and 5), ridging is performed, and after the crops are planted, the surface of the raised field is covered with a plastic film. According to the method, soil agglomeration is prevented, agglomerations are dispersed when encountering water, soil gaps are prevented from being blocked, infiltration of the water salt is facilitated, the water salt is separated from the soil, reverse osmosis of the salt elimination furrows is prevented, and the planting effect can be improved.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to a method for planting crops in saline-alkali land. Background technique [0002] At present, saline-alkali land refers to the salt contained in the soil that affects the normal growth of crops. According to incomplete statistics from UNESCO and FAO, the area of ​​saline-alkali land in the world is 954.38 million hectares, of which 99.13 million hectares are in my country. All kinds of saline-alkali soils are formed under certain natural conditions. The essence of their formation is mainly the redistribution of various soluble salts in the horizontal and vertical directions on the ground, so that the salt gradually accumulates on the soil surface in the salt-gathering area. build up. The control methods of saline-alkali land mainly include the construction of terraced fields, irrigation and drainage, and the use of soil amendments, etc. However, for severe soda sa...

AI Technical Summary

Problems solved by technology

The control methods of saline-alkali land mainly include the construction of terraced fields, irrigation and drainage, and the use of soil amendments, etc. However, for severe soda saline-alkali soil with a high degree of alkalization, soil clay particles will disperse when exposed to water, which will easily block the soil voids, making it difficult for soil moisture to drain. Infiltration and desalination, thus limiting soil improvement; in addition, the dug salt drainage ditch can only be left idle after irrigation, so that due to the rise of groundwater level, it is easy to increase the alkalinity of the salt drainage ditch, which spreads to the direction of the terrace, which not only affects The growth of crops accelerates the alkalization of the surrounding soil, and causes the land to be idle, affecting the use effect