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磷石膏是湿法磷酸生产中的废渣,是一种以CaSO_4·2H_2O为主,含有少量磷、镁、铁、铝、硅等多种元素的粉状物,农业上多用于改良碱性土壤。其ω(CaO)≈30％、ω(SO_3)≈43％,是一种以硫、钙为主的肥料,对提高作物产量、改善作物品质有着重要作用,尤其对喜钙作物花生有明显的增产效果。 为了摸清磷石膏在花生作物上的增产效果及适宜的施用量,我厂与赣榆县农业局土肥站在夏花生上进行了试验,现将其肥效试验结果总结如下。
Phosphogypsum is the waste slag in the production of WPA. It is a kind of powder mainly containing CaSO 4 · 2H 2 O and containing a few phosphorus, magnesium, iron, aluminum and silicon. It is mostly used to improve alkaline soil in agriculture. Its ω (CaO) ≈30%, ω (SO_3) ≈43%, is a kind of sulfur and calcium-based fertilizer, which plays an important role in improving crop yield and improving crop quality, especially for hi- Increase production efficiency. In order to find out the effect of phosphogypsum on peanut yield increase and suitable application rate, our factory and Ganyu County Agricultural Bureau Soil Fertilizer Station in summer peanut were tested, now its fertilizer efficiency test results are summarized as follows.