【摘要】 腐殖酸氮磷钾复合肥单一施用或与尿素配合施用，马铃薯的商品率和淀粉含量均比对照显著或极显著提高．综合考虑，单一施用是最佳处理，在马铃薯生产中，可以推广使用这种肥料．更多还原

【Abstract】 The effects of humic acid N-P-K compound fertilizer on potato yield, marketable tuber rate and starch content were studied during 1993￣ 1995 at Wuwei of Gansu province. The results of field experiments are as follows:Humic acid N-P-K compound fertilizer used alone or in combination with urea can significantly or high significantly increase marketable tuber rate and starch content of potatoes compared with control. In general, humic acid N-P-K compound fertilizer used alone is the best treatment. This fertilizer is recommended for use in potato production.更多还原