烯效唑浸种对杂交稻秧苗素质及籽粒产量的影响

The Effect of the Seed Scading in S-07 Solution upon the Quality of Hybrid Rice Seedling and its Seed Yield

烯效唑是一种较多效唑效果更好的植物生物延缓物质．研究结果表明：烯效唑浸种处理能有效地降低亩高，增加绿叶数和分蘖数，增加茎基宽、单苗根数和干物质，提高秧苗素质；增加有效穗数、穗粒数．在５０－２００ｐｐｍ浓度范围内浸种，均表现明显的增产作用．其中以１５０ｐｐｍ浸种增产效果最显著，每公顷增产稻谷１２８４．３公斤．当浸种浓度达２５０ｐｐｍ时，明显降低种子发芽率．

As a subsatance of delaying the growth rate of plants, S-- 07 can get better results than MET(PP333).The experimental result shows as follows: By way of the seed soaking in S--07 solution,the height of hybrid rice seedling can be reduced effectively; the number of its leaves,tillers,roots,and the width of stemuare increasee; the quality of hybrid rice seedling enhanced;and the number of the effective panicle and seeds also inceased in this way. Within the range of 50 -- 200 ppm cohsistency, the seed soaking in S--07 solution can make the seed yield increase obviously. Among which, the 150 ppm consistency got the best result, and the seed yield increased by 1284. 3kg per ha.. When the consistency of seed soaking in S--07 solution reached 250 ppm, the germination percentage of seed reduced obviously.