【作者】 裴孝伯； 张福墁； 高丽红； 王柳；

【Author】 Pei Xiaobo, Zhang Fuman, Gao Lihong, and Wang Liu ( College of Horticulture Science, China Agriculture University, Beijing 100094)

【机构】 中国农业大学园艺学院；

【摘要】 以黄瓜品种佛吉尼亚为试材,进行了秋冬和冬春茬日光温室黄瓜对N、P、K吸收分配的研究。结果表明:冬春茬黄瓜的根体积、根系活力增加较秋冬茬快;植株全N、P2O5、 K2O的吸收速率冬春茬呈增加趋势,秋冬茬初花期达到峰值后不断下降。冬春茬黄瓜全生育期对氮磷钾的吸收量均约为秋冬茬的4倍。黄瓜生育前期吸收所占比例小,结瓜期所占比例大。全 N、P2O5、K2O的分配,苗期、初花期以茎叶为主．结瓜后向果实的比例增加。文章分析和讨论了养分吸收分配差异的成因。更多还原

【Abstract】 To study uptake and distribution of Nitrogen, Phosphorus and Potassium of winter-spring and autumn-winter crop in solar greenhouse, one cucumber variety (cucumis sativas L. vs. Virginia) was used in the experiments. The results shown that root volume and root activity increased more rapidly in winter-spring than in autumn-winter. The uptake rate of total N, P2O5 and K2O enhanced with plant development in winter-spring, whereas the rate reached the apex at bloom and declined at following stage in autumn-winter crop. Total uptake amount of total N, P2O5 and K2O in winter-spring were as much as about 4 times in autumn-winter. The percentage of early stages to total uptake amount was small, the percentage was large at fruit bearing stage. The distribution to leaf and stem were dominant at early stage and to fruit increased since fruit bearing. The causes of nutrient uptake and distribution variation were analyzed and discussed in the article.更多还原