增施穗肥对水稻产量和氮肥利用率的影响  

Effect of Increasing Panicle Fertilizer on Rice Yield and Nitrogen Use Efficiency

作　　者：高军 陈莫军[2] 孟凡梅[2] 严永峰[2] GAO Jun;CHEN Mojun;MENG Fanmei;YAN Yongfeng(Hongguang State Farm, Qianguo County, Songyuan 138100;Rice Research Institute, Jilin Academy of Agricul- tural Sciences, Gongzhuling 136100, China)

机构地区：[1]吉林省前郭县红光国营农场,吉林松原138100 [2]吉林省农业科学院水稻研究所,吉林公主岭136100

出　　处：《东北农业科学》2018年第2期1-4,共4页Journal of Northeast Agricultural Sciences

基　　金：吉林省产业技术创新战略联盟项目(20150309004NY);吉林省农业科学院创新工程项目(CXGC2017JQ015;CXGC2017ZY031)

摘　　要：针对目前吉林省水稻生产实践中存在的氮肥施用过多、大头肥、氮肥利用率低等问题开展本试验研究。氮肥的基肥、蘖肥、穗肥比例设置了3∶5∶2和3∶4∶3的2个处理;另设置了不施氮肥的空白处理。结果表明,在总氮量150 kg/hm^2水平下,增施10%穗氮肥可增加穗数、穗粒数、成熟度和千粒重,增产13%;同时对稻米含氮量和叶龄进展没有明显影响。因此,增施穗氮肥是一种增产增效的有效途径。This experiment was carried out in order to solve the problem of excessive application of nitrogen fertilizer, large base and tiller fertilizer and low use efficiency in rice production practice in Jilin Province. The experiment includes two treatments with different ratio of base, tiller and panicle nitrogen fertilizer（3∶5∶2 and 3∶4∶3）, and the blank treatment without nitrogen fertilizer. The results showed that increasing of 10% panicle nitrogen fertilizer increased panicle number, spikelets number per panicle, maturity and 1000-grain weight, thus the yield be increased by 13% at the total nitrogen level of 150 kg/ha. Meanwhile, the nitrogen content of grain and leaf age was not affected. Therefore, the increase in panicle nitrogen fertilizer is an effective way to increase yield and production efficiency.

关 键 词：水稻 穗肥 产量 氮肥利用率 

分 类 号：S511[农业科学—作物学]