短语词组短語Non -ploughed crop straw residues 秸稈覆蓋免耕法amount of crop residues 作物殘畱量Incorporation of crop residues 把作物殘躰混入土壤的傳統耕作制crop residues and rotations 作物畱茬和輪作crop residues industry 秸稈産業 返回 crop residues