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五年生的元帅苹果树,叶面喷施B_92500ppm+0.4％KH_2PO_4;B_92500ppm+0.4％NH_4NO_3;B_92500ppm+乙烯利500ppm;PP333 1000ppm。试验结果表明:所有处理都有抑制新梢生长、促进成花、提高座果率、增加产量的作用;同时具有增加叶片中干物质重、提高总碳水化合物和淀粉含量及C/N值的作用;还有减少叶片中全钾含量的效果;PP333抑制剂对抑制新梢和促进成花的后效表现更为持久明显。
Five-year-old Marshal Apple tree, spraying B_92500ppm + 0.4% KH_2PO_4; B_92500ppm + 0.4% NH_4NO_3; B_92500ppm + ethephon 500ppm; PP333 1000ppm. The results showed that all the treatments had the effects of inhibiting the growth of new shoots, promoting the flowering, increasing the fruit set rate and increasing the yield. At the same time, it increased the dry weight of the leaves and increased the total carbohydrate and starch content and C / N ratio ; And the effect of reducing the total potassium content in the leaves; the effect of the PP333 inhibitor on the inhibition of shoots and the promotion of flower formation is more permanent and obvious.