巨峰葡萄施氮技术研究

Studies on Application of Nitrogen to Jufeng Grape

为探讨氮素营养和氮肥施用方法对巨峰葡萄产量和品质的影响 ,进行了氮肥不同施用时期和谢花后氮肥不同施用量试验 .结果表明 ,春施氮肥 ,开花时茎叶中氮素含量偏高 ,新梢旺长 ,树体内碳氮营养比例失调 ,落花落果严重 ;谢花后施用氮肥 ,可有效地防止落花落果 。

To study the effects of nitrogen nutrition and methods of nitrogen fertilizer application on the yield and quality of Jufeng grape,an experiment on different application periods and application amount of N after flower withering were studied. The results obtained showed that application of N fertilizer in spring would lead to nitrogen contents in stems and leaves on the high side while blooming,fast growth of new branch tips,disproportion of carbon nitrogen nutritive ratio,wide spread of flower falling and fruit falling. But application of N fertilizer after flower withering could stop flower falling and fruit falling,increase the yield and raise its quality.