摘要
以宁香粳9号为试验材料,于2022年在南京农业大学白马教学科研基地开展试验,研究覆膜机插缓混一次施肥对水稻生长、产量及氮肥吸收利用的影响,为绿色高产的稻作方式提供新的思路。结果表明,缓混肥一次基施(T1)、覆膜缓混肥一次基施(T2)和覆膜尿素两次施用(T3)处理的产量较常规施肥(CK)分别提高6.0%、9.1%和6.5%,但只有T2处理达到显著水平;T2处理植株干物质积累量较CK显著提高12.5%,在分蘖期、拔节期的叶面积指数较CK分别显著提高62.0%、26.7%;T2处理氮肥偏生产力和氮素农学利用率较CK显著提高9.1%和47.7%,氮素利用率较CK提高17.6%。可见,覆膜机插缓混一次施肥具有更高的水稻增产潜力和氮素利用效率。
An experiment was conducted in 2022 to study the effects of one-time fertilization technology for mechanized transplanting rice with biodegradable film mulching on growth,yield and nitrogen use efficiency of rice(Ningxiangjing 9),in order to providing new ideas for green and high-yield rice cultivation methods.The results showed that the yield of the one-time basal application of controlled-release blend fertilizer(T1),one-time basal application with biodegradable film mulching of controlled-release blend fertilizer(T2),and twice application with biodegradable film mulching of urea(T3) were increased by 6.0%,9.1% and 6.5% compared with conventional fertilization(CK),respectively,but only T2 treatment reached a significant level.Compared with CK,the dry matter accumulation of T2 treatment was significantly increased by 12.5%.The LAI of T2 treatment at tillering stage and elongating stage were significantly higher than that of CK by 62.0% and 26.7%,respectively.Compared with CK,the NPP and NAE of T2 treatment were significantly increased by 9.1% and 47.7%,the NUE was increased by 17.6%.It can be seen that one-time fertilization technology for mechanized transplanting rice with biodegradable film had a higher yield potential and nitrogen use efficiency.
作者
陈洋洋
洪金枝
张子涵
金佳雯
唐心傲
李刚华
CHEN Yangyang;HONG Jinzhi;ZHANG Zihan;JIN Jiawen;TANG Xinao;LI Ganghua(Sanya Institute of Nanjing Agriculture University/Jiangsu Collaborative Innovation Center for Modern Crop Production/Key Laboratory of Crop Physiology Ecology and Production Management,Nanjing Agricultural University,Nanjing 210095,China)
出处
《中国稻米》
北大核心
2023年第5期9-12,16,共5页
China Rice
基金
江苏省科技成果转化专项资金项目(BA2022017)
江苏省重点研发计划(现代农业)(BE2021361)。
关键词
水稻
生长
氮素吸收利用率
产量
生物可降解膜
缓混肥
rice
growth
yield
nitrogen use efficiency
biodegradable film
controlled-release blend fertilizer