摘要
在贵州威宁县连续开展一系列的平衡施肥试验示范研究 ,研究结果认为 :最佳N、P2 O5 、K2 O施用以 10 4～ 150kghm- 2 ,60～ 90kghm- 2 ,150～ 2 10kghm- 2 或 10 0 :40～ 60 :14 0～ 150的配比合理 ,其肥料的产投比可达 7以上 ,钾肥在合理的配比情况下的产投比可达 10左右 ,钾肥的净收益可达 480 0元hm- 2 。试验证明平衡施肥可以使马铃薯的产量和收入比常产增加 1/ 3至 1/ 2 ,能提高商品品质 。
Research results on potato showed that the optimum N, P 2O 5 , and K 2O were about 104-150 kg ha -1 ,60-90 kg ha -1 ,and 150-210 kg ha -1 respectively. In balanced fertilization the VCR of fertilizer was over 7 and K fertilization was over 10. Net income increase by K fertilization was 4800 yuan ha -1 . The balanced fertilization could increase 1/2 or 1/3 potato yield in the areas and promoted potato quality as well.
出处
《土壤通报》
CAS
CSCD
北大核心
2004年第1期48-51,共4页
Chinese Journal of Soil Science
基金
加拿大钾磷研究所和加拿大钾肥出口公司资助
