超级稻晚稻‘5优103’不同缓/控释肥应用效果研究

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

为探索不同缓/控释肥组配模式对超级稻晚稻的应用效果,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。结果表明: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%。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。

To explore the application effect of combined model of different slow/controlled release fertilizers on 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 and yield components of super rice‘5 You 103’and the fertilizer use efficiency were studied by comparing with the conventional fertilization mode‘compound fertilizer(25-10-16)+urea’.The results showed that the use of‘Yongxiao(22-8-15)+MEISTER 7’had the highest fertilizer use efficiency,the rice root length,the SPAD value of tillering stage,the SPAD value of heading stage,the uniformity of breakage and heading and three leaf area was 13.9%,4.0%,8.4%,15.2%and 19.2%higher than those of conventional fertilization,respectively,the difference was significant;the rice yield,plant height and effective tiller number was-1.7%,2.3%and 2.0%higher than those of conventional fertilizers,respectively,with no significant difference.Jinjiu and Yongxiao series of slow/controlled release fertilizer could significantly increase the fertilizer use efficiency.The N,P,and K use efficiency was 3.0%-19.9%,2.1%-8.9%and 3.2%-13.7%higher than those of conventional fertilization,respectively.Under the experimental conditions,regarding the rice yield,fertilizer use efficiency and rice population structure,etc.,'Yongxiao(22-8-15)+MEISTER 7'treatment is the best fertilization mode,followed by'Yongxiao(22-8-15)+urea'treatment.