Areas of planting sugarcane are located in subtropical and tropical parts of Guangxi.These areas are characterized by high temperature,heavy rainfall and nutrients leaching.It results in strong decomposition of soil m...Areas of planting sugarcane are located in subtropical and tropical parts of Guangxi.These areas are characterized by high temperature,heavy rainfall and nutrients leaching.It results in strong decomposition of soil mineral and a low cation exchange capacity(CEC),low organic matter,and low phosphorus(P),potassium(K)and sulfur(S)in soils.In about 30%of the soils in the planting sugarcane regions the total sulfur and the plant-available sulfur are under 150 mg/kg and 12 mg/kg,respectively.The sulfur nutrition is usually supplied insufficiently for sugarcane growth.The total sulfur of and available sulfur are under the medium level in nearly 50%of the soils in the planting sugarcane regions.Therefore,with the improvement of production of the sugarcane,the sulfur soil nutrition will influence and limit sugarcane yield.After application of sulfur fertilizer,available stem,single stem weight increased 5.77%-9.43%of sugarcane yield than without the treatment.It still can improve the cane sugar and fibre content.And the sugarcane can obtain better economic benefits to use the sulfur phosphorus ammonium;it is 18.2-20.23 with output/input(VCR)to use the sulfur fertilizer.Amount of sugarcane absorption sulfur reaches 44.1-67 kg/ha.The treatment with no sulfur fertilizer annual sulfur nutrient lose will be 23.67 kg/ha because sugarcane yield uptake from the field.展开更多
文摘Areas of planting sugarcane are located in subtropical and tropical parts of Guangxi.These areas are characterized by high temperature,heavy rainfall and nutrients leaching.It results in strong decomposition of soil mineral and a low cation exchange capacity(CEC),low organic matter,and low phosphorus(P),potassium(K)and sulfur(S)in soils.In about 30%of the soils in the planting sugarcane regions the total sulfur and the plant-available sulfur are under 150 mg/kg and 12 mg/kg,respectively.The sulfur nutrition is usually supplied insufficiently for sugarcane growth.The total sulfur of and available sulfur are under the medium level in nearly 50%of the soils in the planting sugarcane regions.Therefore,with the improvement of production of the sugarcane,the sulfur soil nutrition will influence and limit sugarcane yield.After application of sulfur fertilizer,available stem,single stem weight increased 5.77%-9.43%of sugarcane yield than without the treatment.It still can improve the cane sugar and fibre content.And the sugarcane can obtain better economic benefits to use the sulfur phosphorus ammonium;it is 18.2-20.23 with output/input(VCR)to use the sulfur fertilizer.Amount of sugarcane absorption sulfur reaches 44.1-67 kg/ha.The treatment with no sulfur fertilizer annual sulfur nutrient lose will be 23.67 kg/ha because sugarcane yield uptake from the field.
