摘要
研究了不同生态条件下，土壤养分因子对马铃薯产量和商品薯率作用效果．结果表明，马铃薯产量在不同生态条件下，其参数有所不同，一般在干旱条件下，速效钾与产量关系密切，相对重要性大，决定程度也最高；在丰水条件下，速效氮与产量关系密切，相对重要性大，决定程度也最高．不论在干旱或丰水生态条件下，速效氮与商品薯率关系最密切作用最大．通过研究，提出了适应不同生态条件栽培马铃薯选地标准和施肥结构方案．
The effects of soil nutrient factors on potato yield and commodity rate were studied in different ecological conditions. The results showed that parameters influencing potato yield were different in different ecological conditions. In arid condition, fast-acting potassium was closely related to the yield and play a relative impotant role in the potato yield determination.But, in abundant precipitation condition, it was fast-acting N which acted as this role. on the other hand, not only in arid but also in abundant precipitation years, the fast-acting N was most closely related to the commodity potato rate with maximum effect. At last, criteria of potato field selection and structural plans of fertilizer application were pointed out which could be suited to different ecological conditions.
出处
《马铃薯杂志》
1996年第2期96-100,共5页
Chinese Potato Journal
关键词
马铃薯
产量
商品薯率
土壤养分
通径分析
potato yield, commodity potato rate, ecologicol condition, soil nutrient factor, correlation and path analysis
