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目前在甜菜生产中,主要以磷肥做种肥。但磷肥在土壤中移动性很小,从甜菜根系发达入土较深的植物学特征上看,这样施肥不利于甜菜对磷肥的吸收,只有深施增产效果才能显著。基于这样的理论认识,1980—1981年对甜菜进行了用磷肥做种肥、种下不同深度施肥,对甜菜产量影响的研究。两年的研究结果证明,磷肥种下深施增产趋势一致,增产效果显著。
Currently in sugar beet production, the main fertilizer to do fertilizer. However, the movement of phosphate fertilizer in the soil is very small. From the botanical characteristics of deeply rooted beet root system, such fertilization is not conducive to the absorption of phosphate fertilizer by sugar beet, and only significant effect can be obtained by deep application of yield enhancement. Based on this theory, from 1980 to 1981, a study was conducted on the effects of phosphate fertilizers on sugar beet and the effects of fertilization at different depths on sugar beet yield. Two years of research results show that the phosphorus fertilizer under the deep application of increasing yield trends, yield significant effect.