日光温室两种茬口下番茄干物质及氮磷钾分配规律研究

 研究了日光温室冬春、秋冬2个栽培茬口不同温光环境下，番茄干物质和氮、磷、钾的积累及其在各器官中的分配。结果表明，2个栽培茬口的干物质及全N、P2O5、K2O的总体分配趋势一致，均表现为果实膨大期前，以向茎叶分配为主，进入果实膨大期之后以向果实中分配为主。但温光环境影响了干物质和氮、磷、钾的累积量及其在番茄各器官的分配比例。秋冬茬番茄干物质和氮、磷、钾的累积吸收量分别为冬春茬番茄的84%、78%、65%和78%。秋冬茬番茄干物质及全N、K2O 、P2O5在采收初期和采收中期向果实中分配的比例高于冬春茬，而向茎叶中的分配比例降低。

Study on Distribution of Nitrogen, Phosphorus and Potassium of Tomato in Different Crops in Solar Greenhouse

The experiment was conducted in solar greenhouse using Zhongza9 tomato variety in order to investigate the light and temperature in greenhouse, and the distribution of nitrogen, phosphorus and potassium in soil culture in winter-spring and autumn-winter crops. The results showed that the distribution of total N, P2O5 and K2O was influenced by light and temperature condition in greenhouse. Both in winter-spring and autumn-winter crops, the distribution trend of total N, P2O5 and K2O was the same as dry material, i.e. before fruit formation stage, mainly distributed in the stem and leaves, in fruit formation stage, mainly distributed in the fruit. In autumn-winter crop, because of the abominable light and temperature condition, the distributing proportion of N, P2O5 and K2O in early stage of picking and middle stage of picking was higher than that in winter-spring crop. The concrete proportion changed with different elements and growth stages.