据报道,美国农业科研人员在免耕法栽种小麦方面取得新进展。美国太平洋西北岸地区,采用免耕法栽种小麦后,产量显著低于普通栽种法。植物病理学家经研究后发现,在免耕条件下,土壤中含有一种腐霉属真菌,能使麦种腐烂,并 It is reported that U.S. agricultural scientists have made new progress in tillage-free wheat cultivation. In the northwestern Pacific coast of the United States, the yield was significantly lower than that of ordinary planting method after no-till cultivation. After studying the plant pathologist found that under no-till conditions, the soil contains a Pythium fungus, can make wheat decay, and