| Relationship between the amount of fertilizer applied and the winter wheat yield in Kasta mountain area |
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| DOI：10.7606/j.issn.1000-7601.2006.03.12 |
| Key Words: Kasta Mountain area winter wheat organic fertilizer yield |
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| Abstract: |
| The relationship between the amount of fertilizer applied and the winter wheat yield was researched using saturated D-optimized experimental design for 3-factor case.The result showed that wheat yield increased with increase of organic fertilizer use amount,they are correlated linearly.The use of reasonable amount of N and P led to increase of wheat yield,while the use of too much N and P apparently resulted in decrease of the yield.the amount of N and P used and the output of winter wheat are in parabola relation.The use of certain amount of organic fertilizer and P had an obviously effect on the wheat yield.N use could not be too much.The appropriate use amount of organic fertilizer,urea and superphosphate was 600～750 kg/667 m2,9～12 kg/667 m2,and 20～42 kg/667 m2,respectively. |
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