摘要
以中熟中粳连粳7号作为试验品种,探求了20%壮丰安在直播水稻上的应用效果。结果显示:苗期使用壮丰安,促蘖增穗的效果较好,且随着壮丰安用量的增加,促蘖增穗的效果越来越好,并以1650ml/hm2用量效果最好;随着壮丰安用量的增加,每穗总粒数迅速下降,但均显著高于对照;壮丰安苗期用量750、1 050ml/hm2及拔节前用量3 000ml/hm2,颖花结实率较高;拔节前使用壮丰安的处理千粒重均高于对照,并以用量1 650ml/hm2千粒重最高;壮丰安苗期使用的处理增产效果较好,并以用量1 350ml/hm2增产效果最好,拔节前使用壮丰安,以3 000ml/hm2增产效果最好;应用壮丰安的处理,茎秆第1、2节间长度最短,占茎秆长度的比例最小,粗度及单位长度重量最大,第3、4、5节间长度最长,占茎秆长度的比例最大,茎秆粗度及单位长度重量较小,壮丰安用量750ml/hm2茎秆抗倒伏力较强。从增产与茎秆抗倒伏能力两方面考虑,壮丰安宜在秧苗期(2叶1心)使用750～1 350ml/hm2或在拔节前使用750～1 050ml/hm2,对水30kg喷雾。
Liangeng 7th as the test species,it explored the application effect of 20% Zhuangfeng＇an on direct-seeded rice.The results was as follows： using Zhangfeng＇an in seedling stage could accelerate tillers and increase the number of grain per ear,and this effect would get better and better as the addition level of Zhuangfeng＇an increased,best at 1650ml/hm2;The number of grain per spike dropped rapidly as the addition level of Zhuangfeng＇an increased,but were significantly higher than that of controls;The ripening rate of spikelet was higher with 750、1 050ml/hm2 of Zhuangfeng＇ an in the seedling stage and 3 000ml/hm2 before the jointing stage;With Zhuangfeng＇an before the jointing stage,the thousand-grain weight was higher than that of controls,and highest at 1650ml/hm2 of Zhuangfeng＇an;With Zhuangfeng＇an in the seedling stage,the yield-increasing effect was better,and best at 1 350ml/hm2 of Zhuangfeng＇an.With Zhuangfeng＇an before the jointing stage,the yield-increasing effect was best at 3 000ml/hm2;With the application of Zhuangfeng＇an,the first and 2nd internodes length were shortest,the proportion of total culm length were smallest,and the roughness and the weight of per unit length were largest;With the application of Zhuangfeng＇an,the 3rd、4th and 5th internodes length were longest est,the proportion of total culm length were largest,and the roughness and the weight of per unit length were smaller;The stem got a strong resistance to lodging at 750ml/hm2 of Zhuangfeng＇an.Considered from both the yield and stem lodging resistance,Zhuangfeng＇an should be used in the seedling stage with 750～1 350ml/hm2,or before the jointing stage with 750～1 050ml/hm2,with 30kg of water for spraying.
出处
《安徽农学通报》
2012年第8期81-88,172,共9页
Anhui Agricultural Science Bulletin
基金
国家粮食丰产科技工程项目与江苏粮食丰产科技工程项目资助(2011BAD16B03
BE2009425)
