摘要
通过盆栽试验研究了芋头植株的干物质积累动态和氮、磷、钾的吸收特性。结果表明芋头植株体内氮、磷、钾的吸收量与干物质积累均呈S型曲线。苗期芋头对氮、磷、钾的吸收均很少,吸收盛期出现在出苗后的60～110天。芋头对氮、钾的吸收强度均呈单峰曲线,最高峰分别出现在出苗后的98天和104天。对磷的吸收强度呈双峰曲线,高峰期分别出现在出苗后的86天和98天。
The dynamic of dry matter accumulation and the nutrition absorptive charicteristics of nitrogen, phosphorous and potassium were studied in pot experiment.The results showed that the amount of nitrogen.phosphorous and potassium uptake by taro plant and the dry matter accumlation were all'S'type curves.The absorbing ability of N.P.K nutrition of taro plant was most vigorously from sixty days to one hundred and ten days from seedling. The absorbing intensities of nitrogen and patassium of taro plant were all curvesb with single peak and it atta-ined to peak at ninety eighth days and hundred and fourth days from seedling individually.But phosphorous absorbing intensity curve was with double peaks and it attained to peaks at eighty sixth days and nineth eighty days from seedling emergence respectively.
出处
《莱阳农学院学报》
1990年第1期44-48,共5页
Journal of Laiyang Agricultural College
关键词
芋头
营养特性
吸收强度
nutrition characteristics
absorbing intensity
taro
dry matter accumulation
