Sichuan has a long history of cotton planting which is an important cotton producing province in Yangtze Rivercotton planting areas.
四川具有悠久的植棉历史，是长江流域棉区重要的植棉省。
2
This year, for instance, because of low river levels, rice cultivation was banned entirely in some areas, while the cotton quota was severely restricted.
例如今年，因为河流水位低，在某些区域完全禁止种植水稻，连棉花配额也作了严格限制。
3
This text fits the whole production function of the moisture and moisture production function of the crop of stage of the typical crop (cotton) of Manas river valley.