不同生育期‘亭林雪瓜’对氮、磷、钾的吸收分配

Absorption and distribution of nitrogen, phosphorus and potassium on ‘Tinglin Xuegua' in different growth stages

在春播设施栽培条件下,探索‘亭林雪瓜’对氮、磷、钾的吸收、分配。结果表明,‘亭林雪瓜’对氮、磷、钾的分配,坐果期前主要用于叶的发育,其次是茎的生长,坐果后逐渐转向果实的发育。‘亭林雪瓜’对氮、磷、钾三要素的吸收,钾略多于氮,磷最少。开花坐果期氮、磷、钾的的吸收总量为每株6.12 g,吸收比例为1∶0.15∶0.84;果实成熟期氮、磷、钾吸收总量为每株23.53 g,吸收比例为1∶0.21∶1.32。因此,生产中不应单一使用氮磷钾比为1的复合肥。

The absorption and distribution characteristics of nitrogen, phosphorus and potassium on‘Tinglin Xuegua＇were studied under the condition of spring greenhouse. The results showed that the distribution of N, P, K was mainly used for the development of leaf before fruit-set, and then used for the growth of stem, turns to fruit development gradually after fruit setting. The absorption of K was slightly higher than N, the least was P of the plants. The total amount of N, P, K absorbed by‘Tinglin Xuegua＇ in fruit setting stage was 6.12 g per plant, and the ratio of N：P_2O_5：K_2O was 1∶0.15∶0.84; the total amount of N, P, K absorbed in fruit mature stage was 23.53 g per plant, and the ratio of N：P_2O_5：K_2O was 1∶0.21∶1.32. Therefore, it is not suitable to apply single fertilizer which the ratio of N：P_2O_5：K_2O was 1∶1∶1 in agricultural production.