摘要
通过大田玉米试验,研究3种自制的包膜复合肥料对玉米的养分释放速度的影响。通过测定土壤中的速效N、P、K,对包膜肥料进行评价。结果表明,包膜复合肥料在前期释放较少,在后期大量释放。在玉米收获期,CRF-2和CRF-1碱解氮含量比复合肥高29.8%,41.2%。CRF-1的速效磷含量比复合肥提高了38.9%。在玉米的收获期,CRF-3的速效钾含量最高,比复合肥料提高了50.7%。
The effect of 3 different kinds of coated compound fertilizer on corn growth was studied by field experiment.These coated fertilizers were appraised from their impact on available N,P,K. The results showed that the coated fertilizer released slowly in the front stage and much more released in the later stage. In the harvest period, the available-N of CRF-2 and CRF-1 are 29.8% and 41.2% compared with compound fertilizer.The available-P of CRF-1 increased by 38.9% compared with componed fertilizer. The available-K of CRF-3 was the most highest. It increased by 50.7% compared with compound fertilizer.
出处
《天津农业科学》
CAS
2011年第3期40-42,共3页
Tianjin Agricultural Sciences
基金
山西省科技攻关项目(033005)
关键词
包膜复合肥料
玉米
养分释放
利用率
coated compound fertilizers
corn
nutrient releasing
fertilizer utilization rate
