Saline and alkaline land mulching film and film spacing horizontal rotation planting method

Abstract

The invention discloses a saline and alkaline land mulching film and film spacing horizontal rotation planting method which includes the steps: horizontally laying straw layers I underground on planting rows at intervals during autumn land preparation in a previous year, and laying plastic membranes on ground surfaces corresponding to the straw layers I before spring sowing in a first year; (2) plowing crop straws to the lower portion of film spacing I to form new straw layers II after crops are harvested in autumn in the first year; (3) laying mulching films on ground surfaces corresponding to the straw layers II in spring in a second year; (4) dosing the rest in the same manner, alternately laying new straw layers in the underground covered with the mulching films and the film spacing after the crops are harvested in autumn every year, and alternately planting the crops in the mulching films and the film spacing in spring every year. As new straws are alternately laid in the underground covered with the mulching films and the film spacing every year, surface accumulation of salts in the film spacing over the years and cutoff of soil capillary tubes can be relieved, soil organic matters are increased, and the problem of successive cropping obstacles caused by planting at the same position can be solved.

Description

technical field [0001] The invention relates to the technical field of soil cultivation, in particular to a horizontal rotation planting method between mulch films and films in saline-alkali soil. Background technique [0002] Soil salinization is a worldwide environmental problem. According to incomplete statistics, the saline soil area in the world is about 1 billion hectares. my country is one of the countries with serious soil salinization, with a total area of ​​about 100 million hectares, mainly distributed in the northeast, north and northwest inland areas. Due to the rapid population growth and the rapid development of the national economy in our country, the contradiction between the surge of construction land and the protection of cultivated land has become increasingly prominent. In order to alleviate this conflict, we need to increase the productivity of existing land or reclaim new land. Saline-alkali land is a potential land resource, and about 80% of the sal...

AI Technical Summary

Problems solved by technology

The above methods have their own advantages and disadvantages: engineering measures require a large amount of engineering and high investment, which increases the cost of agricultural production; agronomic measures have the potential danger of salt return; biological measures are feasible and have the most ecological and economic benefits, and the technology develops rapidly; Improvement measures only treat the symptoms but not the root cause, and improper use can easily cause secondary pollution

However, due to the long-term exposure of the surface between the membranes, the salt control method of this "film above the straw" technology causes serious salt surface accumulation, continuous cropping obstacles, and the deep-buried straw will decompose with the growth of years, which will affect the salt control and suppression. Effect and other issues

Images