摘要
2004年在长沙研究了超级杂交水稻品种两优293在纯有机肥栽培下的产量形成及植株生理特性。结果表明:在施用足够量的有机肥栽培条件下,超级杂交水稻平均产量达到8 568 kg/hm2,接近该品种当地的生产潜力,与常规施肥相比产量仅下降1.7%。后发分蘖比例大,每穗总粒数和结实率显著下降,是影响产量的主要原因。生育后期有机肥区群体不早衰、叶面积指数、剑叶叶绿素含量高及千粒质量增加是有机肥栽培的优势。认为在一定范围为进行稻米的有机生产是可行的,大幅度增加有机肥的施用比例对于稻田生态恢复是很有必要的。
Yield formation and plant physiological characters of super hybrid rice variety Liangyou 293 were studied under condition of Pure Organic Manure Cultivation （POMC） in Changsha, Hunan in 2004. The results showed that grain yield of super hybrid rice reached to 8 586 kg/hm^2 under POMC, which was near to the local yield potential of the test variety and only was decreased by 1.17% compared to chemical fertilizer treatment （CK）. The bigger proportion of secondary tillers and the significant decrease of grain number per panicle and seed setting percent were main reasons that yield decreased. Non-pre-senescence in the late duration, higher leaf area index, higher chlorophyll content in flag leaf and increase of 1000-grain weight were the advantages of POMC. These results showed that production rice by organic manure cultivation in some areas was feasible and increasing the proportion of organic manure application at large extent was necessary to renew paddy field ecosystem,
出处
《作物研究》
2006年第4期308-311,共4页
Crop Research
基金
国家"十五"重大科技攻关项目
编号2004BA520A01
农业部农业结构调整重大技术研究专项
编号04-01-03B
关键词
超级杂交水稻
有机肥
栽培
产量形成
生理特性
Super hybrid rice
Organic manure
Cultivation
Yield formation
Physiological characters
