Always use a plastic lid, not fully covered, to keep the water in the food.
为了保持食物中的水分,记得要用一个塑料盖子,但不要全部盖上。
The test results in different places and in many years showed that there was a striking increase, covered by water permeability plastic film in maize yields than conventional film and than no cover.
多年多点试验示范表明:渗水地膜覆盖玉米增产效果显著,主要表现为单株生产力的提高,在年均积温较小的地区增产幅度大。
The results showed that the content of free water with plastic film envelopment was significantly higher than that covered with soil or open fields treatment.
结果表明,包膜枝条自由水含量显著高于埋土越冬及露地越冬处理。
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