摘要
在贵州高海拔地区织金县采用马铃薯高产栽培技术和平衡施肥技术 ,马铃薯产量为14 91t/hm2 ,超过当地平均产量 1 5倍 ,钾肥配施可增产马铃薯 1 0～ 2 5t/hm2 ,增幅 8 0 6 %～2 0 6 3% ,施钾产投比可达 2 0～ 3 5。施钾肥后马铃薯薯块重量增加 19 2 % ,增产以增加薯块为主 ,马铃薯品质有较大改善 ,试验认为 ,高产高效施肥的N∶K2 O比为 10 0∶95～ 14 0为宜 ,即施氮 (N)10 5kg/hm2 ,施钾 (K2 O) 10 0～ 15 0kg/hm2 为宜。施磷量应根据土壤中缺肥情况进行调整。
Due to rich light energy and radiation and large difference in temperatures between day and night in high altitude areas of Guizhou province,there is a large potential for increasing crop yield.This experiment was conducted in the areas about 1350 m above sea level with technologies of high yield practices and balanced fertilization.The potato yield obtained was 1 5 times of the local production level.Potash application has positive effect for increasing potato yield,ranging from 1 0 t/hm 2(8 06%) to 2 5 t/hm 2(20 63%).Return is 2 0～3 5 times.The weight of potato tuber increased by 19 2%.The increase in production lied on improved weight of potato tuber.Quality was also improved.The best ratio of N to K 2O was 100∶95～140.The amount of phosphate fertilizer should be based on soil's content of nutrients.
出处
《中国马铃薯》
2003年第2期67-69,共3页
Chinese Potato Journal
