bac be 中文意思是什麼
bac be
解釋
北別-
The paper views the principles and mechanics in the aspect of saving soil water with three coving - substances from viewpoint of history bac kground, and explains its advantages and disadvantages, therefore, the techniques of chemical covering will be one of the importance of saving - water in the future farming
摘要從農田化學介質覆蓋節水產生的背景及其過程，主要闡述了其研究現狀、原理、技術效果以及存在的問題，提出了農田化學介質物覆蓋節水將是未來農藝節水的重要技術之一。
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