| Effect of long-term applying micronutrients fertilization on the yield of winter wheat and the structure of wheat in dryland of loess region |
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| DOI：10.7606/j.issn.1000-7601.2008.03.14 |
| Key Words: micronutrient winter wheat structure soil nutrition status |
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| Abstract: |
| Based on along-ter mexperi ment of applying micronutrients for 20years effects of long-ter mapplying micronutrients fertilizer on wheat yield and the structure of wheat were investigated.The results showed that thelong-ter mapplication of micronutrients canincrease the wheat yield significantly.By applying Bfertilizer grain yield was increased by 481．8kg／hm2 with a increase rate of 30．3％；by applying Zn fertilizer grain yield was increased by 610．8kg／hm2 with aincrease rate of 38．4％；by applying Mn fertilizer grain yield was increased by 368kg／hm2 with aincrease rate of 23．1％；by applying Cu fertilizer grain yield was not changed significantly．By applying micronutrients the content of micronutrients in grain and stalk were also increased． The content of zinc in grain and stalk was increased by 10．76mg／kg and 3．84mg／kg compared to the control treat ment while the content of zincin grain and stalk was increased by 8．03mg／kg and 4．78mg／kg compared to the KH2PO4fertilizer treat ment. |