摘要
本文采用 N、P、K三种肥料不同的施肥模式和种植行距的 4因子 5水平 2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 14 % ,甘蔗产量高于 75t/ hm2 和产糖量高于10 .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 .6 t/ hm2 ;磷肥 (过磷酸钙 )施用过多会影响甘蔗含糖量 ,一般以 1.32 t/ hm2 为最适 ;钾肥 (氯化钾 )最适用量为 0 .9t/ hm2 。
To increase sugar production of sugarcane, the experiment of plant density and fertilization pattern of N,P,K was conducted. It was designed with 4 factors, 5 levels, 2 duplicates and cross rotation. The result showed that under most suitable plant density and fertilization model, sugar content was more than 14%, yield of sugarcane was more than 75 t/hm 2. The followed application in wide area showed that under the same ecologic condition, the most suitable row distance was 0.80-0.85 m, the best usage of N(urea) was 0.6 t/hm 2, P[Ca(H 2PO 4) 2] was 1.32 t/hm 2(over use could reduce sugar content); K(KCl) was 0.9 t/hm 2.
关键词
施肥模式
行距
甘蔗
含糖量
产量
fertilization pattern
row distance, sugarcane, sugar content, yield
