马铃薯增施钾肥增产提质效果的研究  

A Study on the Production-increasing and Quality-improving Effects of Potato through Increasing Potassium Fertilizer

作　　者：郭志平[1] 

机构地区：[1]丽水学院化学与生命科学学院,浙江丽水323000

出　　处：《丽水学院学报》2008年第2期42-45,共4页Journal of Lishui University

基　　金：丽水市科技计划项目(2004305-2)

摘　　要：通过试验研究了增施钾肥不同处理对马铃薯产量及相关性状的贡献作用。试验表明,增施钾肥的不同处理均提高了块茎产量、淀粉含量和商品率,说明钾肥对马铃薯产量与品质的贡献作用显著;同时表明,增施钾肥提高了块茎膨大后期的叶绿素含量、净同化率和根系活力,说明钾肥对马铃薯净同化率等生理指标的贡献作用显著。对不同处理的产量、品质指标、生理指标进行相关分析表明,增施钾肥对块茎产量、品质指标和相关生理指标的贡献作用一致,其中产量与大中薯率、净同化率关系最密切,说明增施钾肥主要是通过光合能力提高,促进块茎膨大实现产量提高。The article exposes that the increasing of potassium fertilizer can have effects on the production of potato and the related physiological properities of potato by experiments. The results of experiments show that the increasing of potassium fertilizer in different methods can improve production of potato commodity rate of tuber and content of starch. It also shows that potassium fertilizer makes a contribu- tion to the production and the quality of potato. Moreover, chlorophyll content, net assimilation rate and root activity can be increased by increasing of potassium fertilizer, revealing that potassium fertilizer contributed to related physiological traits. The related analysis of production, quality and physiological indices in different methods show that increasing of potassium fertilizer contributed equivalently to pro- duction and quality as well as net assimilation indices. The production is most closely related to the rate of big--middle potato and net assimilation rate, which shows that increasing of potassium fertilizer can improve production of potato for it can accelerate photosynthesis to promote the expansion of the stem tuber.

关 键 词：马铃薯 钾肥 增产提质 

分 类 号：S532[农业科学—作物学]