春小麦膜上灌最佳覆膜宽度和单宽流量试验研究

A study on optimization of plastic mulching width and discharge per unit width of plastic film mulched spring wheat

研究了河西内陆灌区膜上灌在不同覆膜宽度和单宽流量条件下对春小麦全生育期耗水量、产量构成要素以及产量和水分利用效率的影响,得出该区春小麦膜上灌采用覆膜宽度和单宽流量分别为125 cm和1.3 L/(s.m)时节水增产效应明显.

The irrigation on the film mulching provided crops with a warm-humid environment and laid a foundation for water-saving and yield-increasing. The effects of different plastic film mulching width and discharge per unit width on the water consumption amount during whole growth period, yield components, yield and WUE of plastic film mulched spring wheat in the Inland Irrigation District of He Xi was studied. The results showed that 125 cm plastic film width and 1.3 L· s^-1 · m^-1 discharge per unit width had the most significant water-saving and yield increasing effects on spring wheat in the region. Thus technique supervises and scientific basis were offered for the popularization and application of irrigation on the film mulching in Hexi region.