秸秆覆盖还田促进土壤团粒结构形成，提高了土壤水稳性团聚体含量，从而改善了土壤通透性和保水保肥性。
Straw mulched could improve soil granular structure, and increase the content of water-stable aggregates, so the ability of permeability, fertilizer and water conservation got improved.
以普通聚乙烯地膜为对照，研究了以玉米淀粉为主要原料制备的生物降解保水地膜的田艺特性。
The field characteristics of biodegradable farm film made from corn starch as main material were studied in contrast with PE farm film.
试验研究了花生田使用渗水地膜后的保水、增温效应，以及它的增产效果。
The paper studied the effects on increasing soil temperature, soil moisture content and peanut yield by the way of covering water-osmosis plastic membrane.
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