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为明确缓释肥料在江汉平原水稻作物上的施用效果,通过设置随机区组试验系统研究“金正大”缓释肥料对水稻作物生育特性、产量性状、经济效益及养分利用效率的影响。结果表明,合理施用“金正大”缓释肥可有效促进作物中后期籽粒的形成发育,可实现作物亩增产23.0~38.6 kg、亩增收44.9~76.0元,且养分利用率、偏生产力、农学效率、生理利用率分别提高5.99%~8.85%、2.70~8.18 kg/kg、2.71~3.76 kg/kg、0.31~1.62 kg/kg,其中以全量或减氮10%基施的轻简化施用方法在实现作物稳产增产、省工节肥、提高养分利用效率等方面的优势较为明显。
In order to clarify the application effects of slow-release fertilizers on rice crops in Jianghan Plain, the effect of slow-release fertilizers on crop growth characteristics, yield traits, economic benefits and nutrient use efficiency of rice were studied by setting up randomized block test system. The results showed that the reasonable application of “JJ” slow-release fertilizer could effectively promote the grain development in the middle and later stages of crop production, which could increase the crop acreage by 23.0-38.6 kg and increase the yield by 44.9-76.0 yuan per acre. Nutrient utilization, partial yield, The agronomic efficiency and physiological utilization rate increased by 5.99% ~ 8.85%, 2.70 ~ 8.18 kg / kg, 2.71 ~ 3.76 kg / kg and 0.31 ~ 1.62 kg / kg, respectively. In the realization of stable crop yield, save labor and fertilizer, improve nutrient utilization efficiency and other aspects of the more obvious advantages.