30%矮壮素·烯效唑微乳剂对水稻抗倒伏性状及产量的影响

为了研究30%矮壮素 ·烯效唑微乳剂对提高水稻抗倒伏能力和增产的效果,进行了两年的田间试验和全国多点药效试验。在拔节初期进行药液喷雾处理的结果表明:该30%矮壮素 ·烯效唑微乳剂能够显著降低水稻节间的赤霉素(GAs)含量,显著缩短水稻基部节间长度,增加节间粗度;提高节间单位长度干物质重,增强水稻抗倒伏能力;穗粒数增加8.3% ~10.5%,空秕率降低3.8% ~12.4%,水稻产量增加2.0% ~5.3%。全国药效试验结果统计也表现出相似结果。表明30%矮壮素 ·烯效唑微乳剂具有防止水稻茎秆倒伏、增加产量的作用。

Effects of chlormequat-uniconazole 300 micro-emulsion on lodging resistance and yield of rice

Field experiments and the nationwide multi-sites experiments were carried out to investigate the effects of chlormequat-uniconazole 300 micro-emulsion (ME) on improving the lodging resistance and the yield of rice.Spraying at the early jointing stage of rice,the results showed that the gibberellin (GAs) content in internode,the basic internode and the diameter of the internode were significantly reduced,the dry internode weight was increased,the lodging resistance was improved,the grains/panicle were increased from 8.3% to 10.5%,the unripe grain ratio of rice was decreased from 3.8% to 12.4%,and the yields were increased from 2.0% to 5.3%.The tests of national multi-sites experiments have the consistent results.