摘要
为筛选出能控制水稻无效分蘖的实用物化药剂 ,1999年早季对不同配方的分蘖调节剂进行了大田控蘖效果的比较试验 .结果表明 ,供试化控剂普遍具有较高的控蘖强度 ,无效分蘖减少 ,成穗率提高 ,但以不同类型药剂组配的调节剂表现的效应存在一定差异 ,总体上复方优于单方 ,其中以 1号药剂复配的调节剂控蘖强度大 ,每穗粒数多 ,但有效穗较对照减少 ;以 2号药剂复配的调节剂控蘖强度较大 ,每穗粒数较对照略有减少 ,但有效穗数差异很小 ;而以 1～ 7号药剂复配的部分调节剂 ,以 C10 5 ,C145 ,C0 2 5 ,C175 ,C12 5和 C135的控蘖强度大 (较大 ) ,水稻成穗率高 ,每穗粒数增加 ,结实性状好 ,有效穗数差异不明显 ,对纹枯病的田间抗性有一定的提高 .
To determine the possibility of chemical regulation on rice tiller control of early rice, a field comparative experiment on the control effect was conducted with different prescriptions of regulator at early season in 1999. The results show that the tested treatments have higher intensity of tiller control than that of CK, and efficiently reduce the number of unproductive tiller and enhance the percentage of ear-bearing tillers in general. But the effect differences among different prescriptions of chemical regulator exist. Generally, compound regulators are more effective than single regulators. Prescriptions compounded with chemical No.1 have the highest intensity of tiller-control, and increase spikelets per panicle while reduce panicle numbers. Prescriptions compounded with chemical No.2 have a tiller control effect just below the effect of that with chemical No.1 while slightly decrease spikelets per panicle, although the ear-bearing panicles are slightly lessened. Some tested prescriptions of regulator compounded with chemical NO.1～7 such as C105, C145 , C025,C175, C135 and C125 etc, which do not decrease or increase the members of spikelets per panical, have stronger intensity of tiller control, and maintain higher percentage of ear bearing tillers, and somewhat enhance the resistance to rice culm and sheath blight.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第6期425-428,共4页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南省科技厅重点资助项目 (99NK 10 0 4- 0 7)
