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黑龙港地区位于海河各支流下游,春旱、秋涝,土壤盐碱,肥力不高,产量水平很低。为了提高产量,需要解决的问题很多,本文仅就合理施用磷肥问题,提出一些看法。一、除个别高产地块以外,增施磷肥是增产的有效措施。本地区土壤的全磷含量多在0.12%左右(P_2O_5),其含量高低往往与土壤质地有关。据以往资料,本区潮土(浅色草甸土)的底土母质层,其全磷含量砂质土为0.07—0.11%,壤质土为0.11—0.15%,
Heilongjiang area is located in the tributaries of the Haihe River downstream, spring drought, autumn floods, soil salinity, fertility is not high, the yield level is very low. In order to increase production, there are many problems that need to be solved. In this paper, some opinions are put forward on the issue of rational application of phosphate fertilizer. First, in addition to individual high-yield plots, the additional phosphorus is an effective measure to increase production. The total phosphorus content of soils in the region is about 0.12% (P 2 O 5), and its content is often related to the soil texture. According to historical data, the content of sandy soils in the Chao soil (light meadow soil) in this area is 0.07-0.11% of the total phosphorus content and 0.11-0.15% of the loamy soil,