四川优良小麦品种灌浆特性探讨

Characteristics of Milk Growth Fine Varieties of Wheat in Sichuan

通过对四川几个优良小麦品种籽粒灌浆过程的Logistic方程有关参数及茎叶干重动态变化的分析，提出了四川优良小麦品种选育中主要灌浆参数的建议指标，其中T（灌浆持续期）为45d左右，R（平均灌浆速率）不小于每天2.2％，Rmax不小于每天4．0％。分析同时表明，四川早熟小麦品种具有更多的优良灌浆特性。

This paper suggested main indexes of the milk growth of wheat varieties,through the analysis of Logistic equation and dry welght of stem and leaf during the milk growth stage of fine varieties of wheat in Sichuan. The results shows that the T (the days of the milk growth) is about 45 d. R(average rate of milk growth ) 2. 2% per day. Rmax <4. 0% per day. There are better characterictics of milk growth of early variety of wheat in Sichuan.