Wu H.-X.,College of Public Administration |
Jiang Y.-G.,Fuyang Agriculture Bureau |
Chen J.-M.,Zhejiang Land Surveying and Planning Institute |
Dai Y.-Y.,Zhejiang Land Surveying and Planning Institute |
And 2 more authors.
Chinese Journal of Applied Ecology | Year: 2011
Rice productivity is the key factor affecting rice production and its sustainable development. Based on the gradation of cultivated land quality at county-level, this paper evaluated the rice productivity in Fuyang County of Zhejiang Province, and, through selected sampling field investigation and according to the land productivity index of paddy field quality, a model for assessing rice achievable productivity was established, aimed to analyze the regional rice productivity and its achievable productivity. In the study area, there was a positive correlation between the land productivity index and rice yield. For single cropping rice, its achievable productivity was 1.70×105t, being 1.6 times of its realistic productivity (1.04×105t). In 2009, the realistic rice productivity per unit area was 7676 kg·hm-2, and the achievable productivity was 8831 kg·hm-2, with a production potentiality of +15%, a big potential of rice production capacity in the county. Through the analyses of rice productivity, relative superiority of rice production scale, and its growth potential index in the villages and towns, the rice production of Fuyang County was divided into three regions, i.e., key enhancement region, optimization construction region, and development protection region.
Wu H.,Zhejiang University |
Jiang Y.,Fuyang Agriculture Bureau |
Zhang J.,Zhejiang University |
Shi Z.,Zhejiang University
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | Year: 2011
In order to upgrade the efficiency of fertility level information of farmland in agricultural production, it is indispensable to use cross analysis and integrative application with evaluation of farmland productivity and formula fertilization based on soil-testing. This paper was to investigate the application of Analytic Hierarchy Process (AHP) in soil fertility assessment and its classification, so as to make a comprehensive evaluation of farmland fertility in Fuyang county in China. In order to provide technical support for the scientific fertilizers, chosing GIS as spatial data analysis tool, chosing current farmland utilization map (1:10,000) as the evaluation unit, using AHP to select weight value, the score of each evaluation unit with the cumulative method was calculated. Results show that 80.92% of the total farmland belongs to the second or third level; and there is only 5.59% low-yield farmland among all the agricultural land in Fuyang. The overall quality of farmland of Fuyang is in good condition. And there exists strong advantage in agricultural production in Fuyang. Besides, the new fertilization plan provided by this research is better than the previous fertilization recommendation.