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在垄作黑土区设置肥料田间试验。结果表明 ,甜菜生产中尿素最佳用量为 1 2 .9kg/亩 ,磷酸二铵为 5 .4kg/亩 .在上述用量范围内 ,每kg尿素平均增产块根 5 7.0kg ,每kg磷酸二铵增产根块 1 3.0kg,氮肥在甜菜生产中起决定性作用
Setting up fertilizer experiment in black soil area. The results showed that the optimum amount of urea in beet production was 122.9 kg / mu and that of diammonium phosphate was 5.4 kg / acre.Under the above dosage range, the average yield of root tuber was 5.07 kg per kg of urea and the yield of ammonium phosphate Root block 1 3.0kg, nitrogen fertilizer plays a decisive role in the production of sugar beet