宁夏灌区水稻清洁生产专用缓释肥肥效对比试验研究

Comparison Test of Efficiency of Special Slow Release Fertilizer for Clean Production of Rice in Irrigation Area in Ningxia

以尿素、普通过磷酸钙、氯化钾为材料，配入适当比例缓释剂制成适合宁夏灌区水稻清洁生产缓释肥，采用一次性基施田间试验研究。结果表明：自主研发缓释肥比常规施肥增产率达6．3％～99％，增效1192—2167元／hm2，为宁夏灌区水稻清洁生产提供了技术依据。

The slow release fertilizer suitable for clean production of rice in irrigation area in Ningxia was made by using urea, ordinary superphosphate and potassium chloride as materials and added in with a proper proportion of release agent. The field test and demonstration of one-time basal application showed that the yield increase rate of the independently researched and developed slow release fertilizer reached 6.3%-9.9% and the unit area benefit increased by 1 192- 2 167yuan /hm2. It provides a technological basis for the clean production of rice in irrigation area in Ningxia.