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比较了包膜控释肥料在水旱2种模拟形式下的释放率变化情况。结果表明:在同等条件下,包膜控释肥料在水田的养分累计释放率大于旱田。包膜控释肥料前期的释放速率是水田明显高于旱田,而后期的释放速率则为旱田略高于水田。土壤物理形态的差异对包膜控释肥料的养分释放有很大影响。
The changes of release rate of coated controlled release fertilizer under two kinds of simulated water and drought conditions were compared. The results showed that under the same conditions, the cumulative release rate of coated controlled release fertilizer in paddy field was higher than that in dry field. The release rate of pre-coated controlled-release fertilizers was significantly higher in paddy fields than in paddy fields, while that in later-stage released fertilizers was slightly higher than that in paddy fields. Differences in soil physical morphology have a significant impact on nutrient release from coated controlled-release fertilizers.