Characteristics and Gradations of Cultivated Land Fertility for Winter Wheat-Summer Maize Rotation System in North China
North China area is playing a significant role in grain production in China. Winter wheat-summer maize rotation is a major cropping system in this region. Based on the database of county cultivated land survey of soil fertility in Ministry of Agriculture of the People's Republic of China, total...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Agro-Environmental Protection Institute, Ministry of Agriculture
2015-12-01
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| Series: | Journal of Agricultural Resources and Environment |
| Subjects: | |
| Online Access: | http://www.aed.org.cn/nyzyyhjxb/html/2015/6/20150603.htm |