Fertilization influences on growth and net photosynthesis rate of Hippophae rhamnoides stecklings

In order to study the demand patterns of N,P,K elements on steckling of Hippophae rhamnoides and explore the optimum fertilization technique,the experiment on fertilization was carried out for the annual steckling by using the orthogonal design L16( 45) with N,P,K three elements for potted stecklings in greenhouse. The results showed that: N,P,K fertilizer treatment significantly influenced on growth index and net photosynthesis rate of H. rhamnoides stecklings.The influence of nitrogen was the greatest,followed by phosphorus and potassium. The optimum ratio of N,P,K for H.rhamnoides was N( 5. 0 g /plant) + P( 1. 0 g /plant) + K( 3. 0 g /plant). The net photosynthesis presented a highly significantly positive correlation with the growth index,and the correlation coefficients were all above 0. 80. This research provided the theoretical and practical significance for proper fertilization on H. rhamnoides stecklings.

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