论文部分内容阅读
自治区农田土壤的全磷含量较丰富,多在0.15—0.25％之间,在我国各省、区中是较高的。但土壤的全磷含量只是磷素养分的“库”,是“潜在”的养分,不能作为当季土壤供磷水平的指标。而自治区土壤中的速效磷含量很低,据自治区第三次土壤普查资料,在全疆三十个县中,速效磷含量在中等以上(>10PPm)水平的仅占30个县耕地面积的11％;缺的(5—10PPm)占19％;报缺的(<5PPm)高达70％。可见自治区大部分土壤供磷能力很低。为加快全磷“库”
The total phosphorus content of farmland soil in the autonomous region is relatively rich, mostly between 0.15-0.25%, which is high in all provinces and regions in our country. However, the total phosphorus content of soil is only a “pool” of phosphorus nutrients, which is a “potential” nutrient and can not be used as an indicator of soil phosphorus supply in the current season. However, the content of available phosphorus in the soil of the autonomous region is very low. According to the data of the third national soil survey in the autonomous region, of the 30 counties in Xinjiang, only 11 of the cultivated land in 30 counties with above-average available phosphorus (> 10PPm) %; Missing (5-10PPm) accounted for 19%; reported missing (<5PPm) up to 70%. Visible in most of the autonomous regions of the soil phosphorus availability is very low. To speed up the whole phosphorus “library”