聚脲甲醛(MU)缓释氮肥一次性基施在水稻上的应用效果  

Effects of One-off Application of Poly Urea Formaldehyde (MU) Fertilizer Under Reduced N Rate on Rice

作　　者：范立春 孙磊[2] 王丽华 姬景红[2] 高中超[2] 刘双全[2] 王爽[2] FAN Li-chun;SUN Lei;WANG Li-hua;JI Jing-hong;GAO Zhong-chao;LIU Shuang-quan;WANG Shuang(Heilongjiang Beifeng Hengtai Agricultural Development Limited Company,Harbin 150028,China;Soil Fertilizer and Environment Resource Institute,Heilongjiang Agricultural Academy of Sciences,Harbin 150086,China)

机构地区：[1]黑龙江倍丰恒泰农业发展有限公司,黑龙江哈尔滨150028 [2]黑龙江省农业科学院土壤肥料与环境资源研究所,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2019年第10期34-41,共8页Heilongjiang Agricultural Sciences

基　　金：国家重点研发计划(2018YFD0200200);黑龙江省应用技术研究与开发计划重大项目(GA17B001)

摘　　要：为减少氮肥施用量,以绥粳27为材料,设置常规施肥、不施氮肥和几种不同聚脲甲醛施用量处理,研究聚脲甲醛对水稻产量、氮肥利用率及土壤氮素含量的影响。结果表明:随施肥量减少种植后土壤碱解氮含量也呈下降趋势,等量施肥情况下,施用全量聚脲甲醛的处理碱解氮含量高于减量施肥,且MU70处理碱解氮含量高于MU50处理;减量施肥下氮肥利用率低于常规施肥,全量施肥氮肥利用率较减量配合尿素处理高;各聚脲甲醛减氮处理的株高、穗长、分蘖数、穗粒数均低于常规施肥,施用全量MU50、MU70穗粒数和千粒重高于常规处理;各减施氮肥处理的产量均显著低于常规施肥,全量聚脲甲醛下,MU50处理比常规施肥产量高,MU70处理比常规施肥处理产量低。说明施用全量MU50可以保证水稻产量不低于常规施肥,且氮肥利用率高于常规施肥。In order to reduce the amount of nitrogen fertilizer,Suijing 27 was used as material in this study.The effects of conventional fertilization,non-application of nitrogen fertilizer and several different application rates of poly urea-based formaldehyde on rice yield,nitrogen use efficiency and soil nitrogen content were studied.The results showed that the content of soil alkali-hydrolyzed nitrogen decreased with the decrease of fertilizer application.Under the same fertilizer application,the content of soil alkali-hydrolyzed nitrogen of full poly urea formaldehyde treatment was higher than reduced fertilizer treatment,and the content of soil alkali-hydrolyzed nitrogen in MU70 treatment was higher than MU50 treatment.The nitrogen use efficiency of reduced fertilization was lower than conventional fertilization,and the nitrogen use efficiency of full poly urea formaldehyde fertilization was higher than reduced fertilization combined with urea treatment.The plant height,panicle length,tiller number and grain number per panicle of all reduced poly urea formaldehyde treatments were lower than conventional fertilization,and the number of grain per panicle and 1000-grain weight per panicle of full poly urea formaldehyde fertilization were higher than conventional fertilization.The yields of all nitrogen reduced treatments were significantly lower than those of conventional fertilization.The yield of full amount of MU50 treatment was higher than conventional fertilization,and the yield of full amount of MU70 treatment was lower than conventional fertilization.The results showed that the application of full amount of MU50 could ensure rice yield,and nitrogen use efficiency was higher than conventional fertilization.

关 键 词：水稻 聚脲甲醛 一次性基施 产量 氮肥利用率 

分 类 号：S51[农业科学—作物学]