Irrigation method for improving water use efficiency of peanuts in dry land

Abstract

The invention relates to an irrigation method for improving the water use efficiency of peanuts in a dry land. The irrigation method comprises a first step of covering film and sowing seed; a second step of preparing and paving a drop irrigation device and pipelines; a third step of monitoring the soil water content, wherein detection starts from the florescence period or the pod-bearing period till the pod-full period, when the soil water content of a 0-20cm soil layer drops to below 30% of the field capacity for 5 consecutive days, or when the soil water content of a sandy loam soil land drops to below 7.5% for 5 consecutive days, irrigation is conducted in time; a fourth step of irrigating the earth, wherein the irrigation amount is controlled to be 140-160 cubic meters per hectare, and irrigation is stopped when the soil water content of the 0-20cm soil layer reaches the saturation state. The irrigation method for improving the water use efficiency of the peanuts in the dry land can greatly reduce the amount of water consumption, improves the water utilization efficiency, improve the yield by 8%-40% compared with a conventional method, and improves the water use efficiency by 2-3 times. The irrigation method for improving the water use efficiency of the peanuts in the dry land is easily controlled in technical condition, simple, practicable, strong in operability, and low in production cost.

Description

【Technical field】 [0001] The invention relates to the technical field of crop cultivation, in particular to an irrigation method for improving the water use efficiency of dryland peanuts. 【Background technique】 [0002] China is one of the major arid countries in the world. The area of ​​arid and semi-arid cultivated land accounts for about 53% of the total cultivated land area. Drought has become a key problem that restricts the further development of my country's agricultural production and must be solved first. Although peanut is one of the economical and oil crops that are relatively drought-tolerant and barren-tolerant, it is also an ideal crop for developing dry farming and fully exploiting dry and thin land resources. However, regional rainfall, concentrated rainfall or seasonal drought still limit peanut production. main factor for quality improvement. At present, more than 70% of the peanuts in my country's peanut production areas are planted on barren sandy soil t...

AI Technical Summary

Problems solved by technology

[0004] However, the existing high-yield and high-efficiency peanut water management technology still lacks norms and standards, and flood irrigation or border flood irrigation are mostly carried out according to the local biological environment and climatic conditions

Under this irrigation method, when the water flows through the border surface, it infiltrates rapidly, and the water in the root concentration layer of 0-30 cm will soon reach saturation, and the excess water will carry the fertilizer and move down to the ground with few roots and no roots. The bottom layer enters the underground shallow water layer, especially sandy soil, where the water and fertilizer loss is faster, and the greater the amount of watering, the greater the loss. At the same time, it is easy to cause secondary salinization of the soil, and the overall performance is low water use efficiency, Adverse effects on soil physical properties

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