Objective: To improve the indicators of motility, survival and fertilizing ability of spermatozoa by optimizing temperat......

以玉米天池3号品种为对象,单作,按N∶P=1∶1和2∶1两种肥力配比,采用3种施肥梯度处理,不施肥为对照,在平地和坡地进行试验,分析其......

通过行距、播种量和施肥量正交设计,连续3年对川西北高原老芒麦草产量与种子产量进行比较分析。结果表明,行距与施肥量是影响产量......

Phosphate fertilizers when applied to the soil, besides being harvested by the crops, promote a residual effect that can......