BR—120对汕优63生育后期某些生理特性和产量性状的影响

在杂交水稻齐穗期喷施最终配伍质量浓度为０．０１ｍｇ／Ｌ ＢＲ－１２０＋体积分数０．１％的吐温－２０的浓度,对照喷等体积清水＋最终体积分数为０．１％的吐温－２０。结果表明,与ＣＫ比较,ＢＲ－１２０处理能提高族叶中叶绿素的含量,增加ＰＯＤ活性,降低可溶性糖含量。考种结果显示,它能减少空秕率,增加结实率和千粒重,提高谷粒产量。

Effect of BR 120 on Some Chracteristics of Physiology and Yield of "Shanyou 63" During Late Growth Duration

During the heading stage of hybrid rice "Shanyou 63" the mixed reagent with final concentration of 0.01 mg/L BR 120+0.1% Tween-20 was sprayed upon the treatment plots. An equal volume of pure water+final concentration of 0.1% Tween-20 was sprayed upon the CK plots. The results showed that comparing with the CK, the BR 120 treatment could raise the chlorophyll concentration of flag leaves, increase the activity of peroxidase, decrease the concentration of soluble sugar. The analysis of yield chracteristics revealed that BR 120 decreased the percentage of empty and shrunken grain, increased the percentage of setting grain 1 000 GW and production.