氮硫互作对五常香稻产量和氮肥利用率的影响  

Effects of nitrogen and sulfur fertilizer combinations on the yield and nitrogen use efficiency of ‘Wuchangxiangdao’

作　　者：阳树英[1,2] 王浩 邹应斌 李奎 靳国靖 吕广动 YANG Shuying;WANG Hao;ZOU Yingbin;LI Kui;JIN Guojing;LYU Guangdong(College of Bioscience and Biotechnology,Hunan Agricultural University,Changsha,Hunan 410128,China;Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China,Changsha,Hunan 410128,China)

机构地区：[1]湖南农业大学生物科学技术学院,湖南长沙410128 [2]南方粮油作物协同创新中心,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2020年第2期125-129,183,共6页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家自然科学基金项目(31471446、30971724)。

摘　　要：以稻花香2号为材料,设置3个氮(N)水平N1 (0 kg/hm^2)、N2 (90 kg/hm^2)、N3(180 kg/hm^2)和3个硫(S)水平S1(0kg/hm^2)、S2(45kg/hm^2)、S3(90kg/hm^2),配制9个氮硫互作组合,进行完全随机试验,研究不同施肥处理对五常香稻产量构成及氮肥利用率的影响。结果表明:增施氮肥可显著提高有效穗数和每穗总粒数;增施硫肥可显著提高结实率和千粒质量;9个氮硫互作处理中,N2S2的实际产量(7583kg/hm^2)最高,较N1S1增产56.3%,氮肥利用率为60.0kg/kg;低氮高硫的N2S3和高氮低硫的N3S2均浪费氮肥,增加水稻生产成本,增加环境污染风险。综合分析,90 kg/hm2施氮量和45 kg/hm2施硫量是五常香稻生产较理想的氮硫互作施肥模式。In order to find the best nitrogen(N) and sulfur(S) fertilizer combinations to increase the yield of Wuchangxiangdao and improve the nitrogen use efficiency, the aromatic rice named Daohuaxiang 2 was selected, and 9 nitrogen and sulfur fertilizer combinations,N1S1, N1S2, N1S3, N2S1, N2S2, N2S3, N3S1, N3S2, N3S3, were selected as 9 treatments. These treatment were grouped to 3 levels of nitrogen as N1(0 kg/hm^2), N2(90 kg/hm^2), N3(180 kg/hm^2) and 3 levels of sulfur as S1(0 kg/hm^2), S2(45 kg/hm^2), S3(90 kg/hm^2) by completely random design. The results showed that:(1)Nitrogen could increase the effective panicles and the number of the spiketlets per panicle;(2) with sulfur application, it can increase setting rate and the 1 000-grain weight significantly;(3) Among the 9 treatments, N2S2could achieve the most highest rice yield of 7 583 kg/hm2, the highest yield-increasing effect of nitrogen fertilizer,56.3% and the highest nitrogen use efficiency, 60.0 kg/kg. Thus, the treatment N2S2 is the most ideal fertilizer application of the N×S interactions in Wuchang city for the cultivar of Daohuaxiang 2.

关 键 词：水稻 稻花香2号 氮硫互作 产量 产量构成因子 氮肥增产效应 氮肥利用率 

分 类 号：S511.062[农业科学—作物学]