盐渍化土壤枸杞叶养分变化规律研究

Study on Moving Discipline of Lycium barbarum L. Leaf in Salty Soils

通过311-A拟饱和最优回归试验,研究了盐渍化土壤枸杞园不同氮磷钾配比、不同生育期、枸杞叶片养分含量变化规律。结果表明:较优的氮磷钾配比,叶片养分含量随着施肥量的增加而增大;2 a间叶片全氮含量在全生育期均呈"M"型变化趋势,全磷变化不大,基本趋于平缓,全钾在现蕾初期含量较高,到秋果后期含量逐渐降低;中度盐渍化土壤叶片养分变化与轻度及非盐渍化土壤叶片养分有较大差异。

311-A field saturated optimal regression experiment were designed to study the Lycium barbarum L.leaves nutrient content change rule salty soil under the condition of different NPK ratio and different growing period.The results showed that the better NPK ratio,leaf nutrient content increased with fertilizer rate;Leaves total nitrogen content in the whole growth were tending to 'M' type change trend during two years,total phosphorus little change,basic tends to be stable,total potassium content was higher,from budding early to late autumn fruit content gradually reduced;Moderately salinized soil leaves nutrient were quite different with slightly salinized and non-salinized soil.