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研究结果表明,地膜覆盖栽培具有显著的增产效果,一般亩增47～144公斤,当季亩增益25.64～46.31元。增产主要依赖于穗粒数和千粒重的提高。覆膜具有增温、保墒、降低耕层含盐量,削弱光照,增大CO_2日较差,改善土壤物理性状和供肥能力等效应。生物学效应:促进了营养生长、培育壮苗,加快生育进程、改变了植株体内营养状况和吸肥节奏,使产品器官分化多、灌浆快、粒多、粒重、高产。并提出了栽培技术要点。
The results showed that plastic film mulching had significant yield increase, with the average increase of 47 ~ 144 kg mu, and the gain of mu in the current season was 25.64 ~ 46.31 yuan. The increase mainly depends on the increase of grains per spike and 1000-grain weight. Mulching has the effects of warming, preserving soil moisture, reducing the salt content of the topsoil, weakening the light, increasing the daily CO2 intake, and improving the physical properties of the soil and the ability of supplying fertilizers. Biological effects: Promote vegetative growth, nurturing strong seedlings, accelerate the process of fertility, changing the nutritional status of plants and the absorption of rhythm, so that the product of organ differentiation, filling fast, more grain, grain weight, high yield. And put forward the key points of cultivation techniques.