Furrow-sowing drip-irrigation mulch-cultivation method of salinized cotton field in arid area

Abstract

The invention provides a furrow-sowing drip-irrigation mulch-cultivation method of a salinized cotton field in an arid area, including furrowing and ridging, and double-row planting in furrows. The method is characterized in that ridges are big while the furrows are small, a drip irrigation zone laid in the centerline of a furrow bottom is mulched thereon by a plastic film, and bunch planting is performed at both sides of the drip irrigation zone on the plastic film. The plastic film mulching mode includes single-film mulching and double-film mulching, wherein the single-film mulching is to mulch a film in ridge bare furrows or mulch a film evenly in the furrows, and the double-film mulching is to mulch a top film tightly on the top surface of an adjacent ridge after planting based on the single-film mulching so as to form a furrow chamber. Since the evaporation on the ridges is relatively stronger than that in the furrows, salt is allowed to transfer and accumulate above the ridges, and the rhizosphere salinity of the furrows is reduced accordingly. The method realizes a combination of ridging and furrow sowing, plastic film mulching and water-saving drip irrigation, thus water saving, warming and salt reducing effects are achieved, high yield of cotton is facilitated, and increased yield rate ranges from 8.3% to 16.4%. Compared with the conventional salt-alkali improvement measures, the method features more water conservation, lower investment, and easier operation.

Description

1. Technical field [0001] The invention relates to an agricultural planting method, in particular to a drip irrigation and covering cultivation method for salinized cotton fields in arid areas with ridges and furrows sown with film. 2. Background technology [0002] Soil salinization is one of the important issues that inhibit crop growth and affect the sustainable development of agriculture. Using reasonable improvement measures and salt-tolerant cultivation methods to reduce the salt concentration in the rhizosphere of crops is an effective way to achieve high and stable yields. In arid and semi-arid areas, due to the limitation of irrigation water resources, it is difficult to implement the traditional method of washing salt and pressing alkali. However, measures such as burying hidden drainage pipes and applying modifiers are relatively expensive. Due to better agricultural planting benefits in recent years, some abandoned farmland and abandoned land have been recultiva...

AI Technical Summary

Problems solved by technology

The Chinese invention patent "Planting method of crops in high ridge and arch film ditch" (CN101622930A) proposes that in the early spring when day and night are frozen in northern my country, high ridges should be planted according to the width and narrow row spacing of crops, and narrow row sowing should be carried out in the ditch , and deeply apply organic compound fertilizer between the rows, lay a drip hose in the center of the ditch, spread the ultra-wide film on the edge of the high ridge, and then press the windproof belt on the bow membrane with a light-transmitting drip tape. It is a high ridge, although the planting area is saved and the temperature increase effect is obvious, but the salt reduction effect is not ideal due to the small ridge-to-furrow ratio

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