Effects of Plastic Film Mulching on Growth,Development,Yield and Water Use Efficiency of Foxtail Millet(Italian millet) in Semiarid Area

[Objective] The aim was to screen the best plastic film mulching planting pattern of foxtail millet in semiarid area.[Method]The test foxtail millet variety was Jingu No.43.Four treatments was as follows:T1,the whole plastic film mulching + convention planting + hole sowing(using 1.2 m plastic film);T2,the whole plastic film mulching + furrow planting;T3,the side plastic film mulching + furrow planting(using 0.4 m plastic film);T4,furrow planting.T5was open field drilling,as control.[Result]Foxtail millet matured in advance using plastic film mulching cultivation than that of open field cultivation,thereinto,the yield of T2treatment was the highest of 10335.15 kg / hm2increasing 35.00% than that of CK,its water use efficiency was 22.68 kg /(mm.hm2) increasing 41.75% than that of CK.So,T2treatment significantly improved water harvesting effects comparing with the other treatments,was benefit of rising foxtail millet's water use efficiency and yield.[Conclusion] The study provides a theoretical basis for plastic film mulching planting of foxtail millet in semiarid area.