摘要
通过2年的试验研究了增施钾肥对马铃薯产量及相关性状的影响。试验表明,增施钾肥提高了马铃薯产量、块茎淀粉含量和商品率,提高了叶面积系数、叶绿素含量和净同化率。不同处理增产效果不同,增施钾肥量低时随着钾肥量的提高增产提质效果逐渐提高,当增施钾肥到一定水平时(180kg·hm-2),继续提高钾肥量增产提质效果下降。根据增产提质效果及实际效益,推荐施肥量为:N110kg·hm-2、P2O575kg·hm-2、K2O180kg·hm-2、农家肥104kg·hm-2。
A two-year experiment was carried out to study the effects of increased potassium fertilizer application on potato yield and related traits. The experiment shows that the potato yield, the starch content and the commodity rate, as well as the leaf area index, chlorophyll content, and net assimilation rate, can be increased by increasing the amount of potassium fertilizer. Different potassium fertilizer application amounts lead to different yield increasing. With the increase of potassium fertilizer amount, yield and quality were gradually improved, but when the amount has come to 180 kg·hm^2, effects on the increase of yield and quality of potato declined. To get better yield effect and practical benefits, a rational amount of application of potassium fertilizer is recommended： N 110 kg·hm^-2, P2O5 75 kg·hm^-2, K20 180 kg·hm^-2, Manure 104 kg·hm^-2.
出处
《上海交通大学学报（农业科学版）》
2007年第2期147-149,共3页
Journal of Shanghai Jiaotong University(Agricultural Science)
基金
浙江省丽水市科技计划项目(2004305-2)
关键词
马铃薯
钾肥
增产效果
产量
potato
potassium fertilizer, yield- increasing effect
