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当前位置: 首页 > 文章 > 超级杂交稻协优9308倒伏与落粒的化学控制 浙江农业学报 2001,13 (6)
Position: Home > Articles > Chemical control on lodging and grain dropping of super hybrid rice Xieyou 9308 Acta Agriculturae Zhejiangensis 2001,13 (6)

超级杂交稻协优9308倒伏与落粒的化学控制

作  者：
王熹;黄效林;陶龙兴;俞美玉
单  位：
中国水稻研究所
关键词：
超级杂交稻;稻麦防倒康;防落素;PP333;BTT
摘  要：
成熟期间倒伏与落粒是超级杂交稻协优 930 8高产的两个障碍因子 ,以协优 930 8与协优6 3作对比 ,以PP3 3 3 /BTT作防倒试验 ,以EMSG(E .messenger)作防落粒试验。结果表明 ,协优 6 3比协优 930 8易倒伏。协优 6 3自乳熟期开始轻微倒伏 ,至黄熟全面倒伏。而在同样的肥水管理与物候条件下 ,协优 930 8基本不倒伏。PP3 3 3 /BTT及其复配的“稻麦防倒康”均能通过控制节间伸长 ,增加基节数 ,提高茎节干重而控制倒伏 ;在本试验中协优 6 3自然倒伏严重 ,施用“稻麦防倒康”增产 ,协优 930 8轻微倒伏 ,防倒处理未显增产效果。此外 ,协优 930 8比协优 6 3易落粒 ,防落素 (EMSG)对这两个组合防止落粒的增产效果明显 ,尤其对协优 930 8的防落粒增产效果达到极显著水平。
译  名：
Chemical control on lodging and grain dropping of super hybrid rice Xieyou 9308
作  者：
WANG Xi,HUANG Xiao lin,TAO Long xing,YU Mei yu (China National Rice Research Institute ,Hangzhou 310006,China)
关键词：
super hybrid rice; DMFDK(Dao Mai Fangdaokang); EMSG(E.messenger);PP 333 ;BTT
摘  要：
Lodging and grain dropping during maturation were main limitation to high yield for super hybrid rice Xieyou 9308. PP 333 /BTT and EMSG(E.messenger) were used to prevent lodging and prevent grain dropping respectively in Xieyou 9308 and Xieyou 63. In this experiment, Xieyou 63 was a easier lodging hybrid rice than Xieyou 9308. The lodging of Xieyou 63 began at milk filling stage, and 100% lodging happened at yellow ripeness stage. However, no lodging was observed in Xieyou 9308. The application of PP 333 /BTT or DMFDK could inhibit internode elongation and increase both base node number and dry weight, therefore prevent lodging. Severe lodging happened in the control trials of Xieyou 63, but the grain yield was increased in DMFDK(Dao Mai Fangdaokang) treated trials. There was no significant grain yield increment in either chemical treated Xieyou 9308 trials since no lodging was observed on the control. More dropping happened in Xieyou 9308 than that of Xieyou 63, and lodging preventing chemical (EMSG) could prevent lodging and increase grain yield significantly, especially for Xieyou 9308.

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