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花后植物生长调节剂对低温水稻的调控效果 预览

Effects of Plant Growth Regulators on Regulation of Low Temperature in Rice
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摘要 为明确花后低温对水稻的影响及其化防效果,在大田条件下,以垦鉴稻6号为试验材料,叶面喷施spd、6-BA和SY20三种植物生长调节剂,比较水稻低温与常规之间差异,分析植物生长调节剂对低温水稻的调控效果。结果表明:低温会导致株高、穗长以及节间长缩短,显著降低水稻每穗实粒数、每穗粒重、千粒重、结实率和产量。与清水对照相比,叶面喷施6-BA可以明显缓解株高、穗长以及节间长缩短,减小低温对产量及其构成的不利影响,降低产量损失,而喷施SY20效果次之。说明叶面喷施植物生长调节剂是可以对水稻花后低温起到防控作用的,有利于化控技术在水稻生产上的推广应用。 In order to study the effect of low temperature after flowering on rice and its chemical control effect , and took Kenjiandao 6as experimental material , the spd , 6-BA and SY 20 were sprayed on the leaves of rice , the differences between low temperature and conventional rice were compared , and the effects of plant growth regu-lators on low temperature rice were analyzed.The results showed that low temperature could shorten plant height , panicle length and internode length , and significantly reduce grain number per plant , grain weight per plant , 1 000-grain weight , seed setting rate and yield of rice.Compared with clear water control , leaf spraying 6-BA could significantly alleviate the shortening of plant height , panicle length and internode length , reduce the adverse effects of low temperature on yield and its components , and significantly reduce yield loss , followed by SY 20 regulator.It is concluded that foliar spraying of plant growth regulators can prevent and control low tem-perature after anthesis , which is beneficial to the popularization and application of chemical control technology in rice production.
作者 赵黎明 顾春梅 王士强 王丽萍 王贺 那永光 解保胜 ZHAO Li - ming;GU Chun - mei;WANG Shi - qiang;WANG Li - ping;WANG He;NA Yong - guang;XIE Bao - sheng(Rice Research Institute of Heilongjiang Academy of Land Reclamation Sciences ,Jiamusi 154007,China)
出处 《黑龙江农业科学》 2019年第9期71-73,共3页 Heilongjiang Agricultural Sciences
基金 黑龙江省农垦科学院科技创新项目。
关键词 水稻 植物生长调节剂 低温 化学调控 rice plant growth regulators low temperature chemical regulation
作者简介 第一作者:赵黎明(1980-),男,博士,副研究员,从事水稻栽培生理与化学调控研究。E-mail:nkzlm@126.com。
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