施氮模式对皖麦38淀粉形成与产量的效应  

Effects of Nitrogen Application Pattern on Starch Formation and Grain Yield in Strong Gluten Wheat Wanmai 38

作　　者：盛婧[1] 胡宏[1] 郭文善[1] 朱新开[1] 封超年[1] 彭永欣[1] 

机构地区：[1]扬州大学小麦研究所,江苏扬州225009

出　　处：《作物学报》2004年第5期507-511,共5页Acta Agronomica Sinica

基　　金：国家自然科学基金 ( 3 0 170 5 40 );教育部骨干教师资助计划 (GG 90 1 11117 10 0 3 );江苏省自然科学基金 (BK19990 90 )资助项目

摘　　要：研究在 180kg hm2 施氮量条件下施氮时期和比例对强筋小麦皖麦 38籽粒淀粉形成及产量的效应。结果表明 :氮肥后移 ,直链淀粉、支链淀粉、总淀粉含量下降 ,积累量和积累速率上升 ;旗叶蔗糖含量和可溶性总糖增加 ;籽粒蔗糖含量和可溶性糖降低 ;面粉峰值黏度上升。施氮模式以 30 %作基肥、5叶期施 10 %、叶龄余数 2 5和 0 5时各施 30 %为最优 。Effects of nitrogen application pattern,including different time and ratio,on starch formation and grain yield of strong gluten wheat cultivar Wanmai38 were studied under the condition of 180 kg/hm^2 nitrogen application from 1999 to 2001. The results showed that as the N top dressing delayed,amylose,amylopectin and total starch contents in grains reduced,but their accumulating amount and rate increased;soluble sugar and sucrose contents in flag leaves rose,but declined in grains. Peak viscosity of flour also increased. The nitrogen application pattern of 30% as basic fertilizer,10% dressing in 5th leaf stage,and two 30% dressing at leaf-remainder 2.5 and 0.5 time respectively was optimum for the improvement of yield and quality in wheat.

关 键 词：小麦 皖麦38品种 淀粉形成 产量 氮肥 施肥模式 

分 类 号：S512[农业科学—作物学]