期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2001

27

1

4-6

10.3321/j.issn:1007-1032.2001.01.002

国家重大科技产业工程项目——早稻品质优化工程子项目； 湖南省科委资助项目!(99NKY10 0 4- 0 7)；

本校为第一机构

为了探索化学调控对两系杂交早稻产量和米质的影响并筛选水稻中后期化学调控的配方,2000年早季在湖南宁乡县对两系杂交早稻组合香两优68进行了中期无效分蘖控制和后期米质调控研究.结果表明:香两优68单、双本之间,各药剂处理之间的有效穗数无明显差异.不同配方化控剂可以有效控制无效分蘖发生,提高成穗率,其中以控制生长为主的配方T4的控蘖效果最好,但明显减少每穗粒数,产量降低.以调动顶端优势为主的配方T1的综合效果最好,其控蘖、成穗效果仅次于T4,但每穗粒数明显增加,产量显著高于对照.后期化学调控可延缓根系与叶片衰老、促进壮籽结实,其中配方Q3显著增产,配方Q2显著提高整精米率和降低垩白...

To determine the effects of chemical regulation on the yield and quality of two line hybrid early rice in the middle and late duration of growth and screen the regulator prescripions,a study on controlling of unproductive tillers and regulating of rice quality was conducted with tested compound regulators and two line hybrid early rice cultivar Xiangliangyou68 in Ningxiang county, Hunan province, P.R.C.at early season in 2000.The results show that Xiangliangyou68 has stronger capability of tillering and tiller bearing compensation,and the effective panicles among either different seedlings per...