plastic film mulching的意思|示意

There was no significant difference of rice grain yields between the treatments of straw mulching and plastic film covering but the cost and soil pollution in the latter should be concerned.

覆膜处理虽在产量和水分利用效率上略高于盖草处理，但差异不显著，且覆膜处理存在成本高，污染土壤等缺陷。

Effects of plastic film mulching and pre-sowing irrigation on yield formation of spring wheat.

地膜覆盖和底墒灌溉对春小麦产量形成的影响。

Results indicated that the best control effect and yield increase were obtained from the cultivation of early sowing with plastic film mulching.

结果表明，早播覆膜防病增产效果最好，防效达827％，产量成倍增加。

Underground water quality in rice field under plastic film mulching cultivation was monitored during rice growth period.

对水稻覆膜旱作条件下稻田地下水水质变化作了动态检测。

Compared normal plastic film and straw mulching, winter wheat yield with water-osmosis plastic film mulching increased by 43.1% and 40.4%.

与常规地膜覆盖和秸秆覆盖比较，渗水地膜覆盖冬小麦增产分别为43.1%和40.4%。

The field trial of plastic film mulching on dryland spring wheat was conducted in the semiarid region of Loess Plateau.

在黄土高原半干旱地区，对旱地春小麦进行短期地膜覆盖试验。