摘要
The sugarcane is a main sugar crop in China. The seasonal drying is one of the problems that influence the improvement of output and quality of sugarcane in China. The experimental results for the water requirement and fertigation of the sugarcane showed, that the distribution of the rainfall in spring, autumn and winter, all could not suit the requirements for sugarcane growth. Detailedly, it can suit that sugarcane requirement of 74.4%, 68.6% and 35.7% respectively at seedling emerging stage, tillering stage and mature stage according to sugarcane growth. The drought has already limited the yield of sugarcane. Application of fertigation can enhance the fertilizer use efficiency, and it is also a water saving technique in sugarcane production.
1材料与方法1．1试验概况选择有代表性的甘蔗种植区广西壮族自治区来宾市进行田间试验，供试甘蔗品种为“台糖22”，种植密度45000芽段／hm^2。各生长阶段降雨观测在田间试验旁进行，试验地养分测定按常规方法。
基金
Supported by the National Science and Technology Support Plan(2006BAD05B06-05)
IPNI and IPI
the Natural Sciences Founda-tion of Guangxi(No.0448023)
the Natural Sciences Foundationof Guangxi Academy of Agricultural Sciences(No.2007001(Z))
Project Ministry of Agriculture of the people s Republic of China(WX-2-07-13)
National Key Technology R&D program(2007BAD30B03)~~
