intercropping ridge irrigation method

Abstract

The invention discloses an intercropping furrow irrigation method which comprises the following steps: ridging and making channels in farmland and arranging at least two channels and three furrows, wherein each furrow is trapezoid, the bottom width of each channels is 60cm, the bottom width of each furrow is 60cm-105cm, the height of each furrow is 15cm-25cm, the included angle of each furrow side and each channel bottom is 30 degrees to 45 degrees; arranging the line spacing as 13cm-20cm if wheat is grown on the furrows, and arranging the line spacing as 20cm-30cm if soybean is grown on the furrow; growing two lines of corn in the channels, wherein the line spacing is 40cm-50cm, and the row spacing is 25cm-45cm; and irrigating farmland irrigation water in the channels when the crops are in the critical growth period. Compared with ground irrigation, by means of the intercropping furrow irrigation method, water can be saved by 30%-50%, yield can be increased by 10%-40%, the water use efficiency is obviously improved, and not only the economic benefits are significantly obtained, but also the resources can be saved. Therefore, the intercropping furrow irrigation method plays a significant role in stable and sustainable development of the agricultural ecosystem.

Description

technical field [0001] The invention relates to the field of crop cultivation and irrigation, in particular to an intercropping ridge and furrow irrigation method. Background technique [0002] The shortage of water resources in the northwest inland area has seriously affected the economic development of this area and caused serious ecological problems. However, under the situation that the contradiction between supply and demand of water resources is becoming increasingly acute, the problem of waste of water resources is still very serious. The pattern of intercropping of different crops has been particularly prevalent during the past few decades. Although this model has the characteristics of high yield and high benefit, the backward irrigation method of flood irrigation and extensive agricultural water management methods are typical highly intensive agriculture characterized by a large amount of water consumption, and become the ecological environment of the area. These ...

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Problems solved by technology

First of all: Compared with the traditional intercropping method, the decrease in the utilization rate of cultivated land caused by monocropping will inevitably lead to a decrease in the output per unit of cultivated land. On the one hand, it is not conducive to the improvement of the overall efficiency of agriculture, and on the other hand, it is not conducive to the coordination of the increase in demand for agricultural products. The contradiction with the continuous reduction of land resources; secondly, spring wheat, the main food crop in the irrigated agricultural areas of the Northwest arid area, emerges from late March to mid-July, and then the wheat fields are plowed and sunbaked, and the ground is exposed for nearly 7 months. Not only is it easy to cause serious wind erosion, but also the unevenness of the ground caused by the bare surface and plowing increases the evapotranspiration area of ​​soil moisture, resulting in a large amount of ineffective loss of soil water storage, which virtually increases the irrigation volume of farmland water storage and winter irrigation

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