干旱区滴灌蕃茄灌溉需水量分析

Analysis of Irrigation Water Requirement of Tomato Drip Irrigation in Arid Area

针对种植较多的蕃茄滴灌适宜需水量问题,基于蕃茄滴灌作物生产灌区情况,根据灌区现场实际调研、灌溉用水、气象等资料,分析灌溉水量平衡方法。结果表明,滴灌蕃茄全生育期平均需水量为533 mm,与灌区实际灌溉定额(540 mm)的供需关系相适应;滴灌蕃茄平均灌水定额为38 mm,优化分析灌水定额为47 mm,实际应用灌水定额明显偏低;滴灌蕃茄平均灌溉定额为540mm,优化分析灌溉定额为519 mm,实际应用灌溉定额略高于优化分析数值。

To solve the problem of suitable water demand of tomato drip irrigation with more planting, based on the production irrigation area of tomato drip irrigation crops, irrigation water balance method was analyzed according to the material such as field investigation,irrigation water and weather. The results show that the average water requirement for the full growth period of the drip irrigation tomato is533 mm, which is suitable for the supply and demand relationship of the actual irrigation quota（540 mm） in the irrigation area; The average irrigation quota of the drip irrigation tomato is 38 mm, the irrigation quota is optimized and analyzed by 47 mm, the irrigation quota is obviously lower; The average irrigation quota of the drip irrigation tomato is 540 mm, and the irrigation quota is optimized and analyzed by 519 mm, the actual application of irrigation quota is slightly higher than the optimal analysis value.