多效唑对本田期籼粳稻‘浦优201’株高及产量影响  

Paclobutrazol effect on the yield and plant height of Japonica-Indica hybrid rice 'Puyou 201' in the paddy field

作　　者：顾春军[1] 张珍[1] 王治雄[1] 王依明[1] 王冬翼 李逸龙 吴雪源[1] 纪惠忠 GU Chun-jun;ZHANG Zhen;WANG Zhi-xiong;WANG Yi-ming;WANG Dong-yi;LI Yi-long;WU Xue-yuan;JI Hui-zhong(Pudong New District Agro-Technology Extension Center,Shanghai 201201,China)

机构地区：[1]上海市浦东新区农业技术推广中心,上海201201

出　　处：《上海农业学报》2018年第5期33-36,共4页Acta Agriculturae Shanghai

基　　金：浦东新区科技发展基金项目(PKJ2015-N08)

摘　　要：为了筛选出高杆品种矮化处理的适宜多效唑浓度,对粳籼杂交水稻品种‘浦优201’本田期进行喷施不同浓度的多效唑试验。结果表明:株高、穗长、粒数、茎秆节数、节间长度及茎秆干物质重与多效唑浓度呈负相关;千粒重与多效唑浓度呈正相关,穗数与多效唑浓度没有相关性;同时,多效唑浓度对生育期也有不同程度的影响。综合考虑株高和产量构成等多重因素,在拔节前喷施900 mg/L多效唑最为适宜。In order to select the suitable concentration of dwarfing treatment for tall rice cultivars, we sprayed different concentrations of paclobutrazol on the Japonica-indica hybrid rice ＇ Puyou 201 ＇. The results showed that the plant height, spike length, grain number, stem number, internode length and stem dry weight wee negatively correlated with the paclobutrazol concentration; 1 000-grain weight was positively correlated with concentration;the spike number was proved to be unrelated to the concentration of the paclobutrazol;Meanwhile, the paclobutrazol concentration had different effects in different growth periods. Considering the muhiple factors of plant,it was suitable to spray 900 mg/L paclobutrazol before jointing stage.

关 键 词：杂交稻 '浦优201’ 株高 产量 多效唑 

分 类 号：S511[农业科学—作物学]