The results indicated that the six elements-nitrogen,phosphorus, potassium, boron, molybdenum and copper are the most necessary in purple soils of Sichuan cotton belt,they are always some deficient in cotton plant, and are the soil nutrient of more contribution to cotton yield.
At cotton belt in middle of shaanxi province the maturity was earlier and yield was increased with K or NK、PK、NPK application, by 15.5%～32.3% in harvest before 10 Oct., 8.4%～19.0% in total yield and dry matter accumulation increase by 20.8%～46.4%.
The profitability of ante bellum agriculture in the cotton belt: Some new evidence
hirsutum L.) for most cultivated areas of the southern USA cotton belt.
Monitoring of Butter and Ghee (Clarified Butter Fat) for Pesticidal Contamination from Cotton Belt of Haryana, India
American production of peanuts was greatly stimulated at the beginning of the present century by the depredations of the weevil in the Cotton Belt.
Cotton Belt, and to address questions about the way GOSSYM simulates NO-3-N movement through the soil profile in relation to irrigation water management (which in turn affects prediction of plant growth and development).