基于“3414”模型对宁夏盐池县马铃薯氮磷钾效应的研究

研究旱地马铃薯的氮磷钾施肥技术，寻找马铃薯最佳施肥措施，建立回归数学方程，通过对方程的解析求得高效组合方案，为实现盐池县马铃薯生产中高产高效提供科学依据。2008年在盐池县具有代表性的土壤类型上进行了马铃薯“3414”试验，结果表明：所有施肥处理均比不施肥处理有增产，最高为处理9为6125.88 kg/hm2，其次为处理13为6121.77kg/hm2，最低为处理2为179.19kg/hm2。试验地的地力贡献率为45.86%，说明土壤属于下等肥力，施肥增产效应明显。缺氮区、缺磷区、缺钾区相对产量分别为47.84%、57.83%、86.02%，试验地种植马铃薯氮、磷肥缺失影响比钾肥大一些。根据盐池县旱地马铃薯生产状况，在18套方案中，马铃薯产量大于8000 kg/hm2的农艺措施为：氮肥116.15～183.85 kg/hm2；磷肥60.70～89.30 kg/hm2；钾肥30.56～56.94 kg/hm2。

Study on the Effects of “3414” Model on Nitrogen Phosphorus and Potassium of Potato in Yanchi County

Study the fertilizer technology of NPK on potato in dry land in order to find the best fertilizer technology and establish the regression equation.Obtain the high efficiency program by analysis the equation,which can provide the scientific evidence for high and stable yield on potato in Yanchi County.An 3414 experiment of potato was arrangemented on representative soil type in Yanchi County.The result showed that all fertilization treatments increased the yield of potato.The highest yield was treatment 9 (6...