不同材质地膜在山南市玉米栽培上的试验初报

The Preliminary Test Report for the Effect of Different Materials Plastic Film on Corn Cultivation in Shannan City

为进一步探究不同材质地膜覆盖对西藏玉米生长发育、产量及生产效益的影响,筛选出适宜山南玉米生产应用的可降解地膜,以露地玉米栽培为对照,设置6种不同地膜处理进行田间对比试验。结果表明,在西藏山南温带季风半干旱区种植玉米,采取地膜覆盖促增效应更显著,地膜覆盖可以有效促进玉米生长发育,缩短生育期,提高正常成熟的安全性,籽粒单产较露地(CK)增幅达101.2%~128.0%,净收益在967.8~1 476.2元/667 m^(2),产投比1.30~1.45;其中聚乙烯黑膜的生产效益略高,生态降解膜(慢)、生态降解膜(中)、全生物降解膜及聚乙烯白膜间的单产和生产效益相当,本地区玉米生产可因地制宜地推广应用上述地膜。

To explore the effects of different mulching materials on growth,yield and production efficiency of maize in Tibet,and select out the suit⁃able degradable mulching films in the production and application of maize in Shannan,six different kinds of mulching films were set up for field com⁃parison,and the open field maize cultivation was as the control(CK).The results showed the production of maize was significantly higher by the appli⁃cation of mulching film in the temperate monsoon semi-arid zone of Shannan,Tibet.Mulching film could effectively promote the growth and develop⁃ment of maize,shorten the growth period and improve the safety of normal ripening.Compared with CK,the grain yield per unit area with mulching film increased by 101.2%~128.0%,and the net income was 967.8~1476.2 yuan/667 m^(2).The yield to investment ratio was between 1.30 and 1.45.The yield and production benefit of polyethylene black film was slightly higher,and that of eco-degradation film(lower),eco-degradation film(me⁃dium),biodegradation film and polyethylene white film were similar.The above results are helpful for the application of the maize production in this area.