天山北坡高寒草甸和山地草原氮磷配方施肥的研究

Effects of Nitrogen and Phosphorus Fertilizer on the Alpine Meadow and Mountain Pasture in Northern Tian Shan Mountain

应用二元二次施肥数学模型,对天山北坡高寒草甸和山地草原氮磷配方施肥进行回归分析后,分别建立了两类型氮磷组合连应方程,得出两类型单位面积最高和最佳产量与相应的氮、磷最大和最佳施用量;氮、磷配施比单施更能提高牧草品质;牧草青绿期比不施肥可延长15d左右。

Yield responses of alpine meadow and mountain steppe in northern Tianshan to nitrogen and phosphours fertilizers were studied by using a fertilizer application model. The results showed that pasture yield responded to both fertilizers greatly and most of the species remained green about 15 days longer when fertilizers were applied. By regression analysis, fertilizer application models for the two types of pastures were established. Both maximum and optimum application rates of X and P for the two types of pastures were also calculated.