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生产实践表明,磷肥对甜菜的增产效果十分显著。甜菜产区的社员都习惯在甜菜播种时用磷肥做种肥。这种做法的优点是,省工省肥,能保证一定的施肥深度,符合磷肥在土壤中移动小的特点。另外,早春地温低,土壤中有效性磷释放慢,这时施用一定数量的磷肥,对甜菜苗期生育有很大好处。当前,在用磷肥做种肥时遇到的一个问题是,市场上供应的磷肥多
Production practice shows that the effect of phosphate fertilizer on sugar beet yield is very significant. The members of the beet producing areas are used to fertilizer phosphorus beet when beet seeding. The advantage of this approach is that saving labor and fertilizer, to ensure a certain depth of fertilizer, in line with the characteristics of phosphate fertilizer moving in the soil. In addition, the low temperature in early spring, the availability of phosphorus in soil release slow, then the application of a certain amount of phosphate fertilizer, beet seedling has great benefits. Currently, one of the problems encountered when using phosphate fertilizers is that there are many phosphate fertilizers on the market