北方７～９月份是甘蔗生长的高峰期，是其一生中迅速长高增粗的关键时期，因而对肥水需求量大，要想蜜蔗优质高产，必须抓好以下几条。一、追肥提苗防早衰对于底肥欠丰，土质黏重或苗情差的二三类蔗田应结合浇水或雨后培土起埂，酌情增施硫酸钾２０公斤／６６７米２，尿素１０ The north of July to September is the peak of sugar cane growth, is the critical period of rapid growth and thickening of its life, so the demand for fertilizer is large, high quality and high yield honey must grasp the following. A, topdressing seedlings anti-premature senility For the lack of base fertilizer owe, soil sticky or poor seedling conditions of the two or three types of cane fields should be combined with watering or rain after soil cultivation, as appropriate, the additional potassium sulfate 20 kg / 667 m 2, urea 10