| In order to explore the suitable planting density and application rates of NPK fertilizers for the new cane variety Yuetang No.60, a orthogonal trial was conducted in Zhanjiang cane area, Guangdong province. The results showed that germination rate, tillering rate, into stem rate and stalk length were not very sensitive to the application rates of nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and planting densities while stalk diameter and number of
millable stalks were very sensitive to the application rates of nitrogenous fertilizer, potash fertilizer and planting densities,not sensitive to the application rate of phosphate fertilize. Sucrose content would obvious low along with the increase of application rates of fertilizer and planting density. Sugar yield in Level 2 of every factor (0.825 t/hm2 of urea, 1.875 t/hm2 of calcium superphosphate, 0.675 t/hm2 of potassium chloride and 49 500 two budded setts/hm2) was the highest while sucrose yield was the highest in Level 2 (0.600 t/hm2 of urea) of application rates of nitrogenous fertilizer, Level 1 (1.125 t/hm2 of calcium superphosphate), Level 3 (0.900 t/hm2 of potassium chloride), Level 2 (49 500 two budded setts/hm2) of planting density. So, 0.825 t/hm2 of urea, 1.125-1.875 t/hm2 of calcium superphosphate, 0.675-0.900 t/hm2 of potassium chloride and 49 500 two budded setts/hm2 were the suitable planting density and fertilizer rates for Yuetang No.60. |
