A.滿足社會(huì)需求 B.作物生態(tài)適應(yīng)性 C.符合社會(huì)經(jīng)濟(jì)條件 D.作物布局技術(shù)的可操作性
A.YLTW≥YL≥YLTWS≥YLT; B.YL≥YLTW≥YLTWS≥YLT; C.YL≥YLT≥YLTWS≥YLTW; D.YL≥YLT≥YLTW≥YLTWS。
A.馬鈴薯套作玉米; B.壟稻溝魚; C.玉米間大豆間蘑菇; D.稻田生態(tài)養(yǎng)鴨。