播种期对超高产再生稻生育及干物质生产的影响  

Effects of sowing time on grouth and dry matter content of super high-yield ratoon rice

作　　者：张上守 

机构地区：[1]福建省尤溪县农业技术推广站,福建尤溪365100

出　　处：《福建农业学报》2009年第4期290-295,共6页Fujian Journal of Agricultural Sciences

基　　金：国家科技支撑计划子课题(2006BAD02A13-3-6)

摘　　要：以两优培九为材料,研究了播种期对超高产再生稻干物质生产的影响。结果表明,早播早栽的头季生长期延长,再生季生长期缩短;头季分蘖高峰期延长,分蘖数增多;头季籽粒干重增长较快,从抽穗后6～25 d左右,粒重迅速提高,此后粒重增长趋于平缓;晚播晚栽的头季籽粒干重增长较慢。早播早栽的头季产量增长7.18%～9.56%,再生季增长53.47%。Effects of sowing time on dry matter content of the super high-yield ratoon rice were studied with the two-line hybrid rice Liangyoupeijiu.The results indicated that early sowing and planting resulted in（a） prolonged growth period for the main rice,but shortened for the ratoon rice,（b） prolonged peak tillering stage for the main rice,（c） increased tiller number in main rice,and（d） hastened grain dry weight increase for the main rice-rapid increase occurred from 6d to 25d after sprouting.On the other hand,late sowing and planting caused slower grain dry weight increase in the main rice. The yield of early sowed and planted main rice increased by 7.18%--9.56%, and for the ratoon rice increased by 53.47%.

关 键 词：再生稻 播种期 干物质生产 

分 类 号：S511[农业科学—作物学]