cover-crop覆盖作物
cover r crop覆盖罪
Cover Crop Considerations覆盖作物的考虑
winter cover crop冬季覆盖作物
tillage and cover crop system清耕覆盖作物法
crop cover作物残茬;耕地覆盖率
Crop Cover Factor作物覆盖因子
crop cover ratio作物覆盖度
crop residue cover残茬覆盖
N（名词） a crop planted between main crops to prevent leaching or soil erosion or to provide green manure 覆盖作物 ; 在两主要作物间起护田肥田作用