Wheat-corn double cropping symbiotic cultivation method in moderate saline-alkali soil based on buried pipe drainage and salt elimination

Abstract

The invention provides a wheat-corn double cropping symbiotic cultivation method based on combination of irrigation with saline water and buried pipe drainage and salt elimination technology, so that soil moisture is effectively replenished in spring, accumulated salinity is removed in summer, an interannual accumulation rule of soil salinity of a saline and alkaline land plough layer is changed,and a 'wheat-corn' double cropping cultivation mode is realized. The method comprises the following steps of: A, embedding a buried pipe in field; B, exporting saline water; C, planting winter wheat;and D, culturing and planting summer corn. According to the method, an irrigation and salt elimination system network is designed in the field, and a specific planting method is combined to ensure the moisture demand of wheat and corn. Finally, the 'wheat-corn' double cropping plantation in a moderate saline-alkali soil is realized.

Description

technical field [0001] The invention relates to a high-yield cultivation method for double cropping of wheat and corn in moderately saline-alkali land based on drainage and salt discharge of concealed pipes, in particular to a high-yield cultivation method for wheat-corn crop rotation on medium-severe saline-alkali land in the sea, and belongs to the field of agricultural planting and cultivation. Background technique [0002] The technology of underground pipe drainage and salt discharge is to bury the seepage pipe at a certain depth in the field to discharge the water infiltrating from the upper layer or the rising water from the lower layer out of the field through self-flow or strong drainage, so as to take away the salt and improve the saline-alkali land. Drainage, salt discharge, waterlogging, control of groundwater level, etc. Burying the drainage pipes into the ground can avoid the problems of open ditch drainage occupying a large amount of cultivated land and slope ...

AI Technical Summary

Problems solved by technology

The emergence of wheat is not sensitive to salinity. The planting period in the coastal saline-alkaline area is in late September. Due to the abundant rain in summer, the buried depth of groundwater is relatively shallow at this time, and the soil moisture content in the plow layer is high. Generally, wheat can germinate; Nutrients and chemical substances in the wheat body begin to transfer and consume, the plants are small, coupled with less precipitation at this stage, strong evaporation, and rapid accumulation of salt, often cause the wheat to fail to turn green normally, and directly die; Salt capacity has increased, but the rainy season has not yet entered, and moisture is again the limiting factor for production

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