Second, the key water for irrigation wheat. According to the characteristics of wheat water demand and the water effect of different growth stages of wheat, the method of watering key water is an effective water saving method. According to the study, in the case of filling the bottom of the water (previously before the winter), the effect of watering the winter water is poor, so that the effect of water saving and booting water is best; in the case of bad winter before the situation, The effect of watering the winter water and booting water is more obvious.
Third, harden the canal to reduce leakage; level the land, improve the quality of irrigation, and add anti-seepage facilities to the backbone channels (ditch). When using ground irrigation, it is necessary to level the land. The leveling of the land can increase the irrigation efficiency by 30% to 50%, and the thrifty water consumption by more than 50%.
Fourth, adopt advanced irrigation techniques, adopt advanced irrigation techniques such as sprinkler irrigation, drip irrigation, infiltration irrigation and pipeline irrigation, which is an effective way to save water. Sprinkler irrigation can save water by 20% to 40% compared with ground irrigation. The water consumption coefficient of wheat is only 25% to 30% of the water consumption coefficient of the irrigation. The irrigation is about 40% higher than that of the irrigation. The drip irrigation can save 4 to 6 times compared with the water irrigation. . These advanced irrigation techniques usually do not lead to soil compaction and nutrient leaching, which is conducive to the harmonious action of soil water, fertilizer, gas, heat and microbial activities, and enhance nutrient conversion, thereby increasing wheat yield.
5. Irrigation is linked with other agronomic methods. After irrigation in the wheat field, timely storage methods such as ploughing loose soil and plastic film mulching can avoid water evaporation, improve water use efficiency, and achieve water saving goals.
(Dong Yao)
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