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以晚粳稻“秀水110”和“秀水11”为供试水稻品种,在田间条件下对金正大控释肥料对水稻产量及氮素利用效率的影响作了研究。控释肥掺混比例试验结果表明,与当地农民习惯施用普通尿素PU100%(N210kghm-2)处理相比,等氮量下一次性基施控释尿素CRU100%和CRU70%+PU30%处理产量为8242.3kghm-2和7694.2kghm-2,显著增产16.0%和8.2%;氮肥利用率为27.38%和26.57%,显著提高144.90%和137.66%。控释肥用量试验结果表明,与当地农民习惯施用普通尿素(N240kghm-2)相比,等氮量下一次性基施CRU100%产量为7021.4kghm-2,显著增产2.9%;氮肥利用率为36.80%,显著提高37.52%。
The effects of Jinzhuangda controlled release fertilizer on the yield and nitrogen use efficiency of rice were studied under the field conditions with late japonica rice “Xiushui 110” and “Xiushui 11” as tested rice varieties. Controlled-release fertilizer blending ratio test results showed that, compared with the habit of local farmers using conventional urea PU100% (N210kghm-2) treatment, the yield of CRU100% and CRU70% + PU30% 8242.3kghm-2 and 7694.2kghm-2, respectively. The yield of nitrogen fertilizer was increased by 16.0% and 8.2% respectively. The utilization rates of nitrogen fertilizer were 27.38% and 26.57%, significantly increased by 144.90% and 137.66% respectively. The results of controlled-release fertilizer application showed that 100% CRU yield of 7021.4kghm-2 was significantly higher than that of conventional nitrogenous fertilizer (N240kghm-2) %, A significant increase of 37.52%.