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| Dengfeng,WANG; Haijie,HUANG; Huande,FENG; Hua,WANG; Miaojie,HAN; Zhiping,QI. |
| ABSTRACT This research aimed to discover the distribution and the primary influence factors of Cu in the soil-rice systems of tropical farmland. Soil samples of farmland and rice plant (stalk and polished rice) from the western region of Hainan Island were collected and studied. The results showed that the average Cu content in the topsoil of the study area was 15.75 mg kg-1; the highest Cu content (45.92 mg kg-1) was found in the rice fields of the northern area, where pyroclastic parent material is distributed. Thus, there is a potential for Cu contamination of the rice grown in this region. The average contents of Cu in the rice stalks and polished rice were 16.9 and 5.68 mg kg-1, respectively, indicating that the stalks had a larger capacity for Cu... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rice; Copper; Arable land; Hainan. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000200703 |
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| Yu, Huamei; Ge, Chengjun. |
| This paper gives a general overview of rationale of tropical agricultural circular economy. On me basis of ecological economic theory, circular economy is a new model of economic development which aims at realizing reducing of resources use, reuse of products and recycling of wastes, conforming to the principle of 4R. It is to make economic system melt into me process of cycle of material of natural ecological system harmoniously. This paper introduces the advantages of developing tropical agriculture in Hainan Province, the main problems existing in the development and mo main models of sustainable tropical agricultural development in Hainan Province at present. 9 typical models of tropical agriculture circular economy in Hainan Province are listed in... |
| Tipo: Journal Article |
Palavras-chave: Circular economy; Tropical agriculture; Sustainable development; Hainan; China; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/117423 |
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