摘要
为建立适应榆林土壤缺磷少氮富钾状况的施肥配方,以5 a已结实的文冠果为研究对象,以N/P施肥量为变量,对种子产量、出油率、株高生长量、地径生长量、冠幅生长量等性状指标进行测定分析.结果表明,在榆林地区及其他相似土壤环境下:在绿化造林后,以冠幅增长为主要目的可选择氮磷比1∶0.32的配方进行施肥;在进入结实期后,为提高产量可选择氮磷比1∶0.23的配方进行施肥.
Abstract
In order to establish a fertilization formula suitable for the phosphorus-deficient,nitrogen-deficient,and potassium-rich soil conditions in Yulin,Xanthoceras sorbifolium at 5a in the fruit-ful period was studied with the application rates of nitrogen fertilizer and phosphorus fertilizer as vari-ables,its traits such as seed yield,oil extraction rate,plant height growth,ground diameter growth,and crown width growth were measured and analyzed.The results showed that in Yulin and similar soil environments,Xanthoceras sorbifolium used for afforestation which is aimed to have maximum increase in crown width,a nitrogen-phosphorus ratio of 1∶0.32 is kindly recommended.After the fruiting stage,the maximum yield is the objective,a nitrogen-phosphorus ratio of 1∶0.23 is highly recommended.
维普
万方数据