摘要
为揭示聚天门冬氨酸尿素在水稻上的施用效果,特别是降低田面水中氮素浓度、防控水稻氮素面源污染的效果,采用田间小区试验,对聚天门冬氨酸尿素对水稻产量、吸氮量、田面水中氮素形态及浓度的影响进行研究。结果表明:与普通尿素处理相比,聚天门冬氨酸尿素处理的水稻籽粒产量和吸氮量分别增加2.9%和10.5%,且有一定的增加单穗实粒数和千粒重的作用。聚天门冬氨酸尿素处理施肥后初期(基肥后1~7 d,分蘖肥后1~5 d,穗肥后1~3 d)田面水中TN、NH_4^+-N、NO_3^--N的平均浓度分别比普通尿素处理低10.6%、11.1%、5.4%,但二者田面水中TN、NH_4^+-N、NO_3^--N浓度的动态变化规律基本一致,且二者田面水中NH_4^+-N/TN、NO_3^--N/TN没有差异。因此,聚天门冬氨酸尿素对水稻有一定的增产和促进氮素吸收的作用,同时会降低稻田田面水中氮素浓度,是一种可以用于防控稻田氮素流失,并能保障水稻产量的新型肥料。
To investigate the effect of polyaspartic-urea on rice,especially the effect of reducing N concentration in surface water and controlling N non-point source pollution of rice,a field experiment was carried out to explore how polyasparticurea affects the changes of N concentration in paddy field surface water,the yield and N uptake of rice.Samples of paddy field surface water were collected continuously after each fertilizer application for analysis of total N(TN),NH4+-N and NO3--N.The results showed that the grain yield of polyaspartic-urea was slightly higher than that of common urea by 2.9%,and it had no significant effect on the effective panicle number,but could increase the number of grains per panicle and 1000 grain weight to a certain degree.In addition,N uptake of polyaspartic-urea was slightly higher than that of common urea by 10.5%.The average concentrations of TN,NH4+-N,and NO3--N in the surface water of polyaspartic-urea were 10.6%,11.1%and 5.4%lower than that of common urea treatment in the early stage(1~7 days after basal fertilizer,1~5 days after tillering fertilizer and 1~3 days after ear fertilizer).However,the dynamic change rules of TN,NH4+-N,and NO3--N concentrations in the surface water of polyaspartic-urea were consistent with that of common urea,and there was no difference in NH4+-N/TN,NO3--N/TN of surface water between the two treatments.So polyaspartic-urea can increase rice yield and promote the absorption of nitrogen,and reduce the concentration of nitrogen in the surface water of rice field.It is a new type of fertilizer that can be used to prevent and control the loss of nitrogen in rice field and ensure rice yield.
作者
倪承凡
张富林
吴茂前
夏颖
张志毅
刘冬碧
范先鹏
熊桂云
马路
高立
NI Cheng-fan;ZHANG Fu-lin;WU Mao-qian;XIA Ying;ZHANG Zhi-yi;LIU Dong-bi;FAN Xian-peng;XIONG Gui-yun;MA Lu;GAO Li(Institute of Plant Protection and Soil Fertilizer,Hubei Academy of Agricultural Sciences/National Station for Qianjiang Agro-Environment/Hubei Engineering Research Center for Agricultural Non-point Source Pollution Control/Qianjiang Scientific Observing and Experimental Station of Agro-Environment and Arable Land Conservation,Ministry of Agriculture and Rural Affairs/Hubei Engineering Research Center for Agricultural Environmental Control,Wuhan Hubei 430064;Soil and Fertilizer Station of Ezhou,Ezhou Hubei 436000;Agricultural Environment Protection Station of Xishui,Xishui Hubei 438200)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2020年第6期234-239,共6页
Soil and Fertilizer Sciences in China
基金
国家重点研发计划项目(2016YFD0201205,2016YF D0800500)
湖北省技术创新专项(2018ABA091)。
