黑土肥力及肥料施用量对作物产量的影响

The effects of the blacksoil fertility and the amount of applied fertilizer on the crop yield

通过对我省黑土肥力、肥料施用及作物产量情况的监测 ,得出结论 :(1 )有机肥实物施入量基本上大于化肥施入量 ,折纯施入量比例相反 ;(2 )作物养分的吸收大于养分的供给 ;(3)施肥量在一定限度内 ,作物产量随肥料施入量的增加而增加 ,继续增加施肥量 。

By monitoring the stations about the blacksoil fertility, fertilizer application and crop output in our province, the conclusions are gotten: (1) The amount of organic fertilizer applied is more than the chemical fertilizer. But the proportion of the pure nutrients is opposite;(2) The part of nutrient absorbed by the crop is more than supporting;(3) In a certain limitation, the crop yield will be increased by following increasing the amount of fertilizer applied and keeping increasing the amount of fertilizer applied the potentialty of increasing the yield will be smaller.