滇寻一号S繁殖技术及其相关性分析

Studies on the Correlation between Multiplication Techniques of Dianxun 1-S

对温敏不育系滇寻一号S主要繁殖技术与产量作相关分析的结果表明 :自交繁殖产量与抽穗期的温度呈正相关 ;与栽插密度 (在 10 0万苗 /hm2 以内 )呈正相关 ;与氮肥施用量呈二项正态分布 ;提出在云南元谋的环境条件下繁殖以 6月 8日抽穗、密度 10 0万苗 /hm2 ,底肥 45 0kg/hm2 碳酸氢铵 ,栽后 7d施尿素 15 0kg/hm2 为最好。

Correlation analysis between growing factors and yield of a TGMS line,Dianxun 1-S suggested that the yield resulted from selfcross of Dianxun 1-S was positively correlated with the planted density below 1.0 million seedlines/hm 2,and positively correlated with temperature at heading dates. It is also indicated that the yield and nitrogen amount had a relation of quadratic equation. The paper proposes that high yield at yunmou can be got by using the following conditions:heading at June 8th,planting 1.0 million seedlings/hm 2,using 450 kg of NH 4HCO 3,600kg for base fertilizers, and applying 150kg of urea per hectare after transplanted 7 days.