Studies on the effects of polyaspartate protease fertilizer enhancer in the absorptions of soil nutrition and the enzymatic activities of crops |
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Authors: | Email author" target="_blank">Jiang?GuoliangEmail author Yang?Dong Liu?Yun Zhang?Guanghua Li?Zhongjun Zhang?Xinhua |
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Institution: | 1. College of Marine Life Sciences, Ocean University of China, Qingdao 266003, P. R. China 2. Fisheries College, Ocean University of China, Qingdao 266003, P. R. China 3. Agriculture bureau of Anqiu, Anqiu 262100, P. R. China |
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Abstract: | The effects of polyaspartate protease fertilizer enhancer, made from oyster shell proteins, on the absorption of soil nutrition and the enzymatic activities of crops were studied. It has been found that the enhancer contributes 30%, 50% and 50% augmentation of nitrogen (N), phosphate (P) and potassium (K) absorption respectively and about 20% of nitrate reductase and peroxide enzyme activities of crops. These results show that polyaspartate protease fertilizer enhancer could improve significantly the absorption and utilization efficiencies of soil nutrition and the activities of nitrate reductase and peroxide enzyme of crops, thus elevating the utilization rates of chemical fertilizers to a certain extent. |
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Keywords: | polyaspartate protease fertilizer enhancer absorption soil nutrition enzyme activity |
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