摘要
[目的]确定早稻机插秧高产栽培的最适秧龄。[方法]以高产早稻品种中早15为试验材料，设置20、24、28、32d4个秧龄处理，研究不同秧龄对机插双季早稻秧苗素质及产量的影响。[结果]秧龄在28d以内，随着秧龄的延长秧苗素质提高，秧块状态良好，群体颖花量显著增加，最终使得产量显著增加。当秧龄超过28d时，秧苗单株白根数显著减少，根冠比降低，秧苗素质下降；株高整齐度降低，成苗率下降，秧块状态变差，最终导致减产。[结论]安徽沿江地区机插双季早稻秧龄在24～28d较适宜，以28d最优。
[ Objective ] The aim was to make sure the optimal transplanting period for mechanical transplanted double-season early rice. [ Method ] In order to study the effects of seedling age on quality and yield of mechanical transplanted double-season early flee, a field experiment was conducted with four seedling age trements （20, 24, 28 and 32 days） using a high yield early rice Zhongzaol5. [ Result] With the extension of the seedling age, the seedling quality and seedling state were improved. Meanwhile, the total amount of spikelet and the yield were increased significantly within 28 d. But the number of white roots, root/shoot ratio and seedling quality were decreased when seedling age extened 28 d. The decrease of the height uniformity and plant regeneration also lead to seedling state became worse. Finally, the yield was decreased significantly. [ Conclusion] Seedling age ranged from 24 d to 28 d were suitable for mechanical transplanted double-season early rice in the area of Yangtze fiver of Anhui province and seedling age of 28 d was the best.
出处
《安徽农业科学》
CAS
2015年第1期41-42,45,共3页
Journal of Anhui Agricultural Sciences
基金
国家科技支撑计划项目(2013BAD07B08
2012BAD04B09-2
2012BAD07B02-4
2011BAD16B06-3)
公益性行业(农业)专项(201303102)
国家水稻产业技术体系项目(CARS-01-53)
安徽省农业科学院创新团队项目(11C0101)
关键词
秧龄
双季早稻
机插
秧苗素质
产量
Seedling age
Double-season early rice
Mechanical transplanted
Seedling quality
Yield
