In order to determine the slow release-effect of N, P_2O_5, K_2O of HA organic-inorganic compound fertilizer, the rate of release of N, P_2O_5, K_2O was first determined using a leaching method applied to the soil column.

  • 为确定HA有机无机复混肥中氮、磷、钾元素的缓释效果,采用土柱淋溶试验测定了自制的HA有机无机复混肥中N,P2O5,K2O的释放速率。

  • 互联网摘选 2025-01-19 23:26:35

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