摘要： 为合理施用锌肥,提高向日葵的增产效应,试验选用油用型向日葵品种内葵杂3号作为供试材料,研究了在4个锌肥水平处理下各生育时期油用向日葵的叶面积指数、干物质积累以及籽粒灌浆过程,为合理使用锌肥提供了理论依据。结果表明:不同施锌处理下,叶面积指数、干物质积累均表现为Zn2>Zn0>Zn1> Zn3。籽粒干物质积累过程呈"S"型曲线,可用Logistic方程进行模拟,拟合系数为0.95~0.99。随着施锌量的增加,达到最大灌浆速率的时间缩短,整个灌浆进程缩短,但最大灌浆速率出现在Zn2处理。灌浆过程中籽粒含水率逐渐下降,可用Y=a+bX方程模拟,各处理间的拟合系数(r)为0.96~0.99。

关键词: 向日葵, 锌肥, 干物质积累, 籽粒灌浆

Abstract: This paper researches on the oil-sunflower varieties named NeiKuiZa3.The Experiment studied the leafarea index, the cmatter( DM) accumulation and the grain filling process of oil sunflower in each birth period at the fourzinc fertilizer levels. The purpose is to providing the theory basis for the reasonably use of zinc fertilizer. In result,the leafarea index,the DM accumulates and the grain filling process showed Zn2> Zn0> Zn1>Zn3 under the different tread of Zinc.Meanwhile, the grain DM ulation process showed“ S curve, which、an be simulated by Logistic equa-tion, the fitting adefficient between 0. 95-0. 99. The time of achieving the maximum filling speed is reduced with the increase of zinc fertilizer. The entire filling process shortened, but the maximum filling speed appears the Zn2 treatment.In the filling process, the grain moisture content drops gradually. And it can be simulated by Y= a+ bX equation, fittingcoefficient( r) is between 0. 96- 0. 99 between each treatment.

Key words: Sunflower, Zinc fertilizer, Dry matter(DM)accumulation, Grain filling process

中图分类号: 

• S565.5