摘要
通过用N ,P ,K三种肥料不同的施肥模式和种植行距的四因子五水平二次正交旋转组合设计全部实施的研究方法 ,得出了甘蔗含糖量高于 1 4 % ,甘蔗产量高于 75t/hm2 和产糖量高于 1 0 .5t/hm2 的最佳施肥模式和种植行距。试验结果的验证和大面积的生产性推广证实 :适合于试验地所处的生态环境所在地植蔗区的最佳种植行距为 0 .80～0 .85m ,氮肥 (尿素 )最适宜用量为 0 .6t/hm2 ;磷肥 (过磷酸钙 )施用过多会影响甘蔗含糖量 ,一般以 1 .32t/hm2 为最适 ;钾肥 (氯化钾 )最适用量为 0 .39t/hm2 。
A quardric orthogonal rotational design involving 4 factrors and 5 levels was adopted to study the effects of different plant population density and NPK combinations on the yield and sugar content of sugarcane, and an optimum fertilization pattern was obtained, in which sugar content of the cane was higher than 14%, sugarcane yield was more than 75 t/ha and sugar yield was more than 10.5 t/ha. In subsequent field experiments for verification and extension showed that under the ecological conditions similar to those of the experiment fields the optimum row spacing for sugarcane cultivation was 0.80～0.85 m, and the optimum rates of N (urea), P (superphosphate) and K (Potassium chloride) were 0.6, 1.32 and 0.39 t/ha, respectively.
出处
《西南农业大学学报（自然科学版）》
CSCD
2000年第3期266-29,共1页
Journal of Southwest Agricultural University
关键词
施肥模式
行距
甘蔗
含糖量
产量
fertilization pattern
row spacing
sugarcane
sugar content
yield
