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本文采用氮磷钾“3414”最优回归试验设计方案,对露地大白菜高产栽培氮磷钾肥料合理施肥技术进行了初步研究。结果表明,不同施肥量对大白菜产量有较明显的影响,在本试验条件下,当施N=13.9kg/667m2、P=4.9kg/667m2、K=11.7kg/667m2,N∶P∶K比例为1∶0.35∶0.84时,大白菜经济产量最高达到4599.02kg/667m2。当施N=13.1kg/667m2、P=4.6kg/667m2、K=10.4kg/667m2,N∶P∶K比例为1∶0.35∶0.79时,施肥利润最佳,达到2928.20元/667m2,大白菜经济产量也为4591.25kg/667m2。肥料生产效率和肥料增产率,以处理6施N=14kg/667m2、P=6kg/667m2、K=12kg/667m2最佳。在实际生产中可以根据不同土壤肥力状况和种植条件对施肥量进行适当调整。
In this paper, nitrogen, phosphorus and potassium “3414 ” optimal regression test design scheme, a preliminary study of high-yield cultivation of Chinese cabbage field nitrogen, phosphorus and potassium fertilizer rational fertilization technology. The results showed that different fertilization rates had a significant effect on the yield of Chinese cabbage. Under the experimental conditions, when N = 13.9kg / 667m2, P = 4.9kg / 667m2, K = 11.7kg / 667m2, N:P:K The proportion of 1:0.35:0.84, the highest economic output of Chinese cabbage reached 4599.02kg / 667m2. When applying N = 13.1kg / 667m2, P = 4.6kg / 667m2, K = 10.4kg / 667m2, N: P: K ratio of 1:0.35:0.79, the fertilization profit was the best, reaching 2928.20 yuan / 667m2. Economic output is also 4591.25kg / 667m2. Fertilizer production efficiency and fertilizer yield, to deal with six applications N = 14kg / 667m2, P = 6kg / 667m2, K = 12kg / 667m2 best. In actual production, fertilizers can be properly adjusted according to different soil fertility conditions and planting conditions.