超级稻晚稻5优103不同缓/控释肥应用效果研究

目的]为探索不同缓/控释肥组配模式对超级稻晚稻的应用效果。方法]以超级稻5优103为供试品种,研究劲久(27-11-12)、劲久(24-14-16)、永笑(22-8-15)、MEISTER 7、MEISTERS 15等在不同组配模式下对水稻产量及其构成因素、肥料利用效率的影响,与“复合肥(25-10-16)+尿素”(常规施肥模式)进行比较。结果]不同缓/控释肥配施模式下“永笑(22-8-15)+ MEISTER 7”处理的肥料利用效率最高,其水稻根长、分蘖期叶片SPAD值、抽穗期叶片SPAD值、破口期抽穗的整齐度和倒三叶叶面积较常规施肥提高13.9%、4.0%、8.4%、15.2%和19.2%,差异显著；其水稻产量、株高和有效分蘖数较常规释肥提高-1.7%、2.3%、和2.0%,差异不显著。劲久、永笑系列缓/控释肥能有效提高肥料利用效率,氮、磷和钾素利用效率较常规施肥分别提高3.0%~19.9%、2.1%~8.9%和3.2%~13.7%。结论]本试验条件下,综合稻谷产量、肥料利用效率和水稻群体结构等因素,“永笑(22-8-15)+ MEISTER 7”处理的施肥模式最佳,“永笑(22-8-15)+尿素”处理次之。

Application of Slow/Controlled Release Fertilizers on Super Rice‘5 You 103’

Objectives]Methods] In order to explore the different slow/controlled release fertilizers application effect of combination model in super late rice. The effects of Jinjiu (27-11-12), Jinjiu (24-14-16), Yongxiao (22-8-15), MEISTER 7 and MEISTERS 15 on the yield, its components and fertilizer use efficiency of super rice "5 You 103" were studied by comparing with "compound fertilizer (25-10-16) + urea" (conventional fertilization mode). Results]The test results showed that the use of different slow/controlled release fertilizers under the combined application mode of "Yongxiao (22-8-15) + MEISTER 7" had the highest fertilizer utilization efficiency. its leaf length, the SPAD value of tillering stage, the SPAD value of elongation-heading stage,, the uniformity of breakage and heading and Three leaf area were 13.9%, 4.0%, 8.4%, 15.2%, and 19.2% higher than those of conventional fertilization significantly; its rice yield, plant height, effective tiller number were -1.7%, 2.3%, and 2.0% higher than conventional fertilizers, with no significant difference. “Jinjiu” and “Yongxiao” series of slow/controlled release fertilizers can significantly increase the fertilizer utilization efficiency. The N, P, and K utilization efficiency is 3.0%~19.9%, 2.1%~8.9% and 3.2%~13.7% higher than conventional fertilization respectively. Conclusion]Under the experimental conditions, comprehensive rice yield, fertilizer use efficiency, and rice population structure, etc., "Yongxiao (22-8-15) + MEISTER 7" treatment has the best fertilization mode, "Yongxiao (22-8-15) + urea treatment followed.