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连续 3年的钾肥示范试验研究表明 :在氮、磷肥基础上合理施用钾肥 ,能显著提高蔬菜的产量和经济效益。施用钾肥后洋葱可增产 8.88%～ 78.8% ;番茄增产 3 .76%～ 5 2 .1% ;辣椒增产 3 .2 5 %～ 3 5 .7%。其中番茄的最高收益为 5 .97万元 /hm2 ,产投比为 4.0 0～ 3 4.5 7;辣椒的最高收益为 8.91万元 /hm2 ,产投比为 4.81～ 48.15 ;洋葱的最高收益为 7.84万元 /hm2 ,产投比为 15 .0～3 2 .78。同时由试验结果可看出氮、钾之间存在正交互作用。
Three years of continuous demonstration experiments on potash fertilizer showed that rational application of potash fertilizer on the basis of nitrogen and phosphate fertilizer can significantly increase the yield and economic benefits of vegetables. After application of potash, the yield of onion increased by 8.88% -78.8%; the yield of tomato increased by 3.76% -52.1%; the yield of pepper increased by 3.52% -37.5%. Among them, the highest yield of tomato is 59,700 yuan / hm2, and the production-input ratio is 4.0 0-3,5 7; the highest yield of pepper is 89,100 yuan / hm2, and the production-investment ratio is 4.81-48.15; the highest income of onions is 7.84 Ten thousand yuan / hm2, production and investment ratio of 15 .0 ~ 3 2 .78. At the same time, it can be seen from the test results that there is an orthogonal interaction between nitrogen and potassium.