| Selection of ecological fertilizer formula with organic contents and its impact on soil properties and economic benefits of potato |
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| DOI：10.7606/j.issn.1000-7601.2016.06.30 |
| Key Words: ecological fertilizer with organic content soil properties potato economic benefits |
| Author Name | Affiliation | | MA Zong-hai | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Gansu Dunhuang Seed Company, Jiuquan, Gansu 735000, China | | YAN Zhi-bin | Gansu Dunhuang Seed Company, Jiuquan, Gansu 735000, China | | LIU Yu-huan | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China | | PAN Yan-hua | The Seeds Station of Jiuquan City, Jiuquan, Gansu 735000, China | | QIN Jia-hai | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China | | XIAO Zhan-wen | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China |
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| Abstract: |
| At the potato planting base in Zhangye City, Minle County, Gansu Province, an field experiment was carried out to select the formula of ecological fertilizer with organic content and its impact on soil properties and the economic benefits of potato. The results showed that the factors that affected potato production were in the order of the following: potato fertilizer > soybean meal organic fertilizer > 5406 antibiotic bacterial anure > polyvinyl alcohol. The best formula for the ecological fertilizer with organic content was poly (vinyl alcohol) (0.0124)∶ the potato fertilizer (0.7453)∶ soybean meal organic fertilizer (0.2050)∶ 5406 antibiotic bacterial manure (0.0373). The regression equation that measures the effect by fertilizer on potato yield with the application of the ecological fertilizer with organic content was y=40.91+3.9110x-0.3882x2. The economic benefit reached the best when the fertilizer rate was 2.40 t·hm-2, resulting in a theatrical potato production of 48.06 t·hm-2. Compared with traditional chemical fertilizers, the application of ecological fertilizer with organic content caused soil bulk density and pH reduced by 5.30% and 3.08%; total porosity and aggregate increased by 5.26% and 5.26%; organic matter, alkali-hydro nitrogen, available phosphorus and available potassium increased by 3.26%, 1.08%, 1.25% and 1.08%; fungi, bacteria, actinomyces and bacteria amounts increased by 6.28%, 36.07%, 21.94% and 36.07%; sucrase, urease and phosphatase increased by 14.46%, 14.46% and 13.95%; potato plant height, stem diameter and dry weight of aerial part increased by 7.45%, 14.93% and 14.36%; and tuber weight, tuber weight per plant, yield and fertilizer profits increased by 5.13%, 5.05%, 3.80% and 556.89 yuan·hm-2, respectively. The application of ecological fertilizer with organic content in potato fields could effectively improve the soil physical and chemical properties and biological properties, advantaging potato yield and fertilizer profits. |
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