贵州糯谷子干物质积累与养分需求特征

Dry Matter Accumulation and Nutrient Demand Characteristic of Glutinous Millet in Guizhou

通过盆栽试验对贵州省糯谷子干物质积累和肥料营养需求特征进行了初步研究,结果表明:谷子干物质积累主要集中在生长中后期;在谷子的全生育期中,植株对N、P、K的吸收呈双峰曲线特征,植株全生育期对N、P、K的吸收比例为1.00∶0.09∶0.49,每生产100 kg谷子需纯N、P、K分别为3.53 kg、0.31 kg和1.72 kg。

The pot experiment of the local glutinous millet variety was conducted to study its dry matter accumulation and nutrient demand characteristic. The results showed that the main period of dry matter accumulation was during middle-later growth period, the absorption curve of N, P and K nutrient of the glutinous millet plant represented two-peak characteristic during the whole growth period, the absorption proportion of N, P and K nutrient of the glutinous millet plant was 1.00 ：0.09 ： 0.49 and 100 kg millet yield needed 3.53 kg of pure N, 0.31 kg of pure P and 1.72 kg of pure K nutrient respectively.