不同施肥量对醇用型和饲用型甜高粱产质量的影响

Effects of Different Fertilizing Amount on Yield and Quality of Alcohol and Forage Sweet Sorghum

研究了醇用型甜高粱和饲用型甜高粱在甘肃河西灌区不同施肥量水平下,对株高、茎粗、植株含糖量、产量的影响,结果表明:在甘肃河西灌区饲用型甜高粱和醇用型甜高粱茎秆汁液含糖量与施肥水平关系不大。醇用型甜高粱和饲用型甜高粱,只有在较高施肥水平下才能获得较高产量。醇用型甜高粱和饲用型甜高粱对肥料的需求水平不一致,饲用型甜高粱需偏施氮肥,在666.7m2施N 37.5kg、P2O510 kg、K2O 8 kg时,获得高产8863.8kg;醇用型甜高粱需偏施钾肥,在666.7m2施N 25kg、P2O510 kg、K2O 12 kg时,获得高产7483.4kg。

The experiment of different level fertilization was conducted to test the effects on plant height, stem diameter, plant sugar content and yield for alcohol sorghum and forage sorghum in Hexi corridor of Gansu. The results showed that there was not significant relationship between the stalk sugar content of the both sorghum and fertilizer level. The yield of the both sorghum got high yield at relatively high level fertilizer. The demand to fertilizer for both sorghum was not consistent, and the forage sorghum favor N fertilizer to reach the highest yield of 8863.8 kg/666.7 m^2 as application of N 37.5 kg, P2O510 kg, K2O 8 kg in 666.7 m^2. The alcohol sorghum was favor K fertilizer to reach the highest yield of 7483.4 kg/666.7 m^2 was application of N 25 kg, P2O510 kg, K2O 12kg, in 666.7 m^2.