涝渍胁迫下立丰灵施用对机插秧水稻抗倒性及产量的影响  

Effect of Lifengling application on lodging resistance and yield of machine-transplanted rice under waterlogging stress

作　　者：曹艳 黄意 朱波[1] 赵记伍 向永玲 廖昌焦 王晓玲[1] CAO Yan;HUANG Yi;ZHU Bo;ZHAO Ji-wu;XIANG Yong-ling;LIAO Chang-jiao;WANG Xiao-ling(College of Agronomy,Yangtze University,Jingzhou 434025,Hubei,China;Golden Straw Hat Agricultural Specialized Cooperative,Jianli 433300,Hubei,China)

机构地区：[1]长江大学农学院,湖北荆州434025 [2]金草帽农业专业合作社,湖北监利433300

出　　处：《湖北农业科学》2021年第23期36-40,共5页Hubei Agricultural Sciences

基　　金：国家重点研发计划“粮食丰产增效科技创新”重点专项(2018YFD0301306)。

摘　　要：为研究涝渍胁迫下施用立丰灵对机插秧水稻的抗倒性和产量的影响,以杂交品种荃优华占和常规优质品种绿银占为材料,比较了分蘖中期涝渍胁迫和正常水分管理条件下,施用立丰灵对水稻株高、鲜重、倒伏指数及产量的影响。结果表明,与正常水分管理相比,涝渍胁迫下,绿银占的株高显著增加,荃优华占和绿银占的植株鲜重均显著降低;荃优华占和绿银占的倒伏指数均显著提高并导致水稻产量下降。涝渍胁迫下施用立丰灵后,荃优化占的株高显著降低了2.32%;荃优华占和绿银占的倒伏指数分别显著下降了13.38%和28.86%;荃优华占的产量显著提高了627.9 kg/hm^(2),主要表现为实粒数及千粒重显著增加,绿银占的产量及其产量构成因子的增加均未达显著水平。因此,适时适量喷施立丰灵对于涝渍胁迫下提高水稻抗倒伏能力及保障产量形成具有一定的促进作用。Aimed to investigate the effects of Lifengling on lodging resistance and yield of machine-transplanted rice under waterlogging stress,two rice varieties,Quanyouhuazhan(hybrid varieties)and Lvyinzhan(Conventional high-quality varieties),were used at this study.And the plant height,fresh weight,lodging index and yield were used to evaluated the effect of Lifengling on rice under waterlogging condition.The results showed under waterlogging condition the plant height of Lvyinzhan was siginificantly increased;The fresh weight of Quanyouhuazhan and Lvyinzhan were significantly decreased compared with normal water management,respectively.Under waterlogging stress,after application of Lifengling,the plant height of Quanyouhuazhan significantly decreased by 2.32%.Meanwhile,the lodging index was significantly increased and the rice yield was decreased under waterlogging condition.On the other hand,the lodging index of Quanyouhuazhan and Lvyinzhan were marked decrease 13.38%and 28.86%by spray application of Lifengling,respectively.And the yield of Quanyouhuazhan was significantly increased by 627.9 kg/hm^(2),because of the increase of grain number and 1000-grain weight.The yield of Lvyinzhan and its yield components increased unsignificantly.Therefore,timely and appropriate spraying of Lifengling could improve lodging resistance and ensure yield formation of rice under waterlogging stress.

关 键 词：立丰灵 涝渍胁迫 倒伏指数 产量 机插秧水稻 

分 类 号：S511.048[农业科学—作物学] S482.8