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当前位置: 首页 > 文章 > 喷施药剂对高温天气下常规粳稻经济性状和产量的影响 安徽农业科学 2018,46 (27) 35-38
Position: Home > Articles > Effects of Spraying Medicaments under High Temperature on the Economic Characters and Yields of Conventional Japonica Rice Journal of Anhui Agricultural Sciences 2018,46 (27) 35-38

喷施药剂对高温天气下常规粳稻经济性状和产量的影响

作  者：
李立中;张长海
关键词：
常规粳稻;高温热害;药剂;经济性状;产量;缓解
摘  要：
[目的]研究喷施药剂对高温天气下常规粳稻经济性状和产量的影响。[方法]选择徐稻8号、盐粳10号和桐粳3号3个常规粳稻为材料,以磷酸二氢钾和水杨酸为试验药剂,在田间水浆管理正常情况下开展药剂缓解高温热害试验。[结果]常规粳稻在孕穗—抽穗阶段遇上高温时,叶面喷施0.02%浓度水杨酸水溶液会影响单位面积总颖花量和结实率,造成产量下降,差异不显著;叶面喷施0.4%浓度磷酸二氢钾水溶液在高温刚开始时使用有利于缓解高温热害,但高温持续一段时间后使用会减少单位面积有效穗,降低每穗总粒数和产量,尤其是抽穗期使用可减产显著;叶面同时喷施0.02%浓度水杨酸水溶液与0.4%浓度磷酸二氢钾水溶液会严重降低单位面积颖花量而减产。常规粳稻高温热害会减少结实率和降低单位面积颖花量。[结论]该研究为常规粳稻在敏感期内遇高温时减轻热害提供依据。
译  名：
Effects of Spraying Medicaments under High Temperature on the Economic Characters and Yields of Conventional Japonica Rice
作  者：
LI Li-zhong;ZHANG Chang-hai;Tongcheng Seed Management Bureau of Anhui Province/Tongcheng Rice Research Institute of Anhui Province;
关键词：
Conventional Japonica rice;;High temperature thermal damage;;Medicament;;Economic characters;;Yield;;Relief
摘  要：
[Objective] To research the effects of spraying medicament under high temperature on the economic characters and yields of conventional Japonica rice. [Method] With three varieties of conventional Japonica rice of Xudao 8,Yanjing 10 and Tongjing 3 as the research materials,and monopotassium phosphate and salicylic acid as the research medicaments,test on relieving high temperature thermal damage by medicaments was carried out under normal water management in field. [Result]When conventional Japonica rice met high temperature at booting-earing stage,foliar spraying of 0.02% salicylic acid aqueous solution affected the seed-setting rate and total spikelets in unit yield and reduced yield,showing significant differences. Foliar spraying of 0.04% potassium bi-phosphate solution was helpful to relief high temperature heat damage at the beginning of high temperature,but reduced the effective ears unit yield,grains per ear and yield when hot temperature lasted for a long time,especially reduced yield significantly when applied at heading period. Foliar spraying of 0.02% salicylic acid aqueous solution and 0.04% potassium bi-phosphate solution would greatly reduce the spikelets unit area and yield. Conventional Japonica rice under high temperature thermal damage would reduce seed-setting rate and spikelets unit area. [Conclusion]This research provided references for reducing high temperature thermal damage of conventional Japonica rice.

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