plastic film mulching 塑料薄膜覆盖
field plastic film mulching 地膜覆盖
plastic film mulching width 覆膜宽度
broad plastic film mulching 宽幅地膜覆盖
clear plastic film mulching 地膜覆盖
Without N application, straw and plastic-film mulching increased soil organic nitrogen and light fraction organic nitrogen contents. When N was fertilized, straw mulching could increase soil organic nitrogen and light fraction organic nitrogen contents, while plastic-film mulching decreased their contents.
不施氮时,覆草和覆膜均能提高土壤有机氮含量,增加土壤轻质有机氮含量;施氮后,覆草能增加土壤有机氮和轻质有机氮含量,但覆膜却降低了土壤有机氮和轻质有机氮含量。
参考来源 - 地表覆盖对西北旱地土壤有机氮累积及矿化的影响By field survey and experiments in laboratory, the thesis expatiated the effects of plastic-film mulching, nitrogen-phosphorus interaction, single potassium for forage maize in the northwest plateau of Hebei Province.
试验包括地膜覆盖、不同水平的氮磷肥料交互试验和钾肥试验,并通过田间调查和室内实验,较为系统地研究了冀西北高原地区地膜覆盖、氮磷交互和钾肥对饲用玉米的效应。
参考来源 - 冀西北高原饲用玉米地膜覆盖及肥料效应研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
The results showed that the plastic film mulching could improve the soil moisture and heat condition in the rhizosphere of rape.
结果表明：地膜覆盖能显著改善油菜根际的水、热状况。
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。
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