It is efficient rotation system for overcoming continuous cropping obstacle to use rotation system of cucumber with corn for green manure, black-bean for green manure or planting cowpea.是什么意思_It is efficient rotation system for overcoming continuous cropping obstacle to use rotation system of cucumber with corn for green manure, black-bean for green manure or planting cowpea.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句