论文部分内容阅读
推广玉米地膜覆盖栽培应注意的问题德钦县农牧局６７４５００闵铸品１９８７年以来，各级政府都把玉米地膜覆盖栽培作为高寒山区提高单产、增加总产的重要手段和有效措施，推广速度快、效益好是有目共睹的，但在一些地方，由于社会化服务跟不上，出现了报酬递减（即高投入...
Popularization of maize mulching should pay attention to problems Deqin County Agriculture and Animal Husbandry Bureau 674500 Min Cast Since 1987, all levels of government have maize mulch cover cultivation as an important means and effective measures to improve the yield in the alpine mountain area, increase the total output, promotion speed, Effectiveness is obvious to all, but in some places, due to social services can not keep up, there has been a diminishing return (ie high investment ...