2000•Heilongjiang Agricultural ScienceRequires access
The effects of the blacksoil fertility and the amount of applied fertilizer on the crop yield
Hlj Province
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Abstract
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.