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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。
The lodging and falling during maturity were two obstacles to the high yield of super hybrid rice Xieyou 9308, compared with that of Xieyou 930 8 and Xieyou 6 3, and PP3 3 3 / BTT as an anti-fall test. messenger) for anti-drop test. The results showed that Xieyou 6 3 was more prone to lodging than Xieyou 930 8. Xieyou 6 3 from the milk began slightly lodging, to full-yellow lodging. In the same fertilizer management and phenology conditions, Xieyou 930 8 basically does not lodging. PP3 3 3 / BTT and its combined “rice and wheat anti-dumping Kang” can control the internodal elongation, increase the number of base, increase the dry weight of stems and control lodging; in this experiment, Xieyou 6 3 natural lodging Severe, the application of “rice and wheat anti-dumping” increase production, Xieyou 930 8 slight lodging, anti-dumping treatment did not increase the production effect. In addition, Xieyou 930 8 was easier to drop than Xieyou 6 3, and the anti-drop elements (EMSG) had an obvious effect of increasing yield of these two combinations to prevent falling. In particular, the anti-drop yield of Xieyou 930 8 reached an extremely significant level .