| Effects of multi-functional compound fertilizer for corn seed production on soil physical and chemical properties and study on its optimal fertilization rate |
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| DOI：10.7606/j.issn.1000-7601.2013.02.13 |
| Key Words: corn seed production multi-functional compound fertilizer physical and chemical property optimal fertilization rate |
| Author Name | Affiliation | | SHI Weijie | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Zhangye Ganzhou District Agricultural Technology Promotion Center, Zhangye, Gansu 734000, China | | PEI Huiping | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Beijing Agricultural Seed Industry in Zhangye Branch, Zhangye, Gansu 734000, China | | QIN Jiahai | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Characteristics of the Hexi Corridor Resources Utilization of Provincial Key Laboratory， Zhangye, Gansu 734000, China | | YAN Zhibin | Gansu Dunhuang Seed Seed Company, Jiuquan, Gansu 735000, China | | WANG Aipin | Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 731000, China | | XIAO Zhanwen | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Characteristics of the Hexi Corridor Resources Utilization of Provincial Key Laboratory， Zhangye, Gansu 734000, China | | ZHAO Yunchen | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Characteristics of the Hexi Corridor Resources Utilization of Provincial Key Laboratory， Zhangye, Gansu 734000, China | | CHENG Hongyu | College of Agriculture and Biology Technology, Hexi University, Zhangye, Gansu 734000, China
Characteristics of the Hexi Corridor Resources Utilization of Provincial Key Laboratory， Zhangye, Gansu 734000, China |
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| Abstract: |
| The pot and field experiments were conducted to investigate the effects of multi-functional compound fertilizer for corn seed production on soil physical and chemical properties and to determine its optimal fe
rtilization rate in Hexi irrigation area. The results showed that, with the increase of the multi-functional fertilizer rate, the total soil porosity, aggregate structure, EC (conductivity), organic matter, alkaline hydrolysis N, available P and available K increased, whereas the bulk density and pH decreased. The rat
e of multi functional fertilizer was positively correlated with the botany traits, economic traits and yield of corn, but was negatively correlated with the yield increase per unit fertilizer input. The marginal yield and marginal profit of corn seeds declined with the increase of fertilizer rate. When the fertilizer rate continued to increase on the basis of 1875 kg·hm-2, the benefit became a negative value. The regression equation between yield and multi-functional fertilizer rate was: y=3043.18+1.0109x-0.0002088x2, and the fertilizer rate with best economic benefit (x0) was 1874.81 kg·hm-2, at which the predicted production of corn was 5672.34 kg·hm-2. It was concluded that, in the sand soil, the multi functional compound fertilizer could improve effectively the soil physical, chemical and biological properties, and raise the output and profit in corn seed production. |
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