滴灌条件下灰枣施肥效应研究

Study on Fertilization Effect of Huizao under Drip Irrigation Condition

以滴灌为条件设置不同水肥处理,通过施肥模型建立与分析,研究氮磷钾施肥配比对灰枣产量与品质的影响。结果表明:在设计水平范围内,土壤中适量增施氮、磷肥能提高灰枣果实单果重和产量;增施钾肥可提高枣果中还原糖和Vc的含量,增施氮肥则可提高蛋白质的含量;氮、磷、钾三因素对灰枣产量以及糖度、Vc含量的作用顺序为:施钾量>施磷量>施氮量,对蛋白质含量的作用顺序则为:施钾量>施氮量>施磷量。

Through designing different treatments of water and fertilizer under drip irrigation,the influence of fertilization proportion of N,P and K on the yield and quality of Huizao is studied based on the establishment and analysis of the fertilization model.The results show that in range of design level,appropriate increase of fertilizer N and P in soil can increase the weight of single fruit and yield,the increase of fertilizer K to soil can increase the contents of revertose and vitamin C in fruit of Huizao,the increase of fertilizer N to soil can increase the content of protein in fruit.The order of the effect of the three factors on the yield,contents of revertose,vitamin C in fruit of Huizao is KPN,while it is KNP for the effect on the content of protein in fruit.