Effects of Different Sowing and Fertilization Methods on Contents of Mineral Elements,Chlorophyll and Active Enzymes of Highland Barley
In order to explore the highland barley varieties suitable for planting in Huangzhong county,Qinghai province and the optimal methods of sowing and fertilization,five highland barley varieties(Beiqing 8,Beiqing 9,Kunlun 14,Kunlun 17 and Dulihuang)were selected for variety comparison test.According to the differences of seedling yield,chlorophyll,mineral elements and active enzyme contents,excellent highland barley varieties were selected,and different sowing(row spacing and sowing amount)and fertilization(type and fertilization amount)methods were set for Beiqing 9,the effects of different sowing and fertilization methods on the contents of mineral elements,chlorophyll,superoxide dismutase(SOD)and cytochrome oxidase were studied.The results showed that the contents of mineral elements in Kunlun 17 and Beiqing 9 were higher,among which the seedling yield of Kunlun 17 was the highest,and the contents of chlorophyll and cytochrome oxidase of Beiqing 9 were the highest.The contents of mineral elements,SOD and cytochrome oxidase in Beiqing 9 increased significantly with increasing of seeding amount and row spacing,the contents of chlorophyll and SOD increased significantly with the increasing of N+P and N fertilizers,and the contents of cytochrome oxidase increased significantly with the increasing of P fertilizer;The correlation between most mineral elements in highland barley reached a very significant level.
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