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磷石膏作为贵州酸性黄泥土新型土壤调理剂,经两年试验结果表明:(1)提高了玉米产量。667m 2 用50 kg,100 kg,150 kg,分别增产玉米36.7 kg,55.2 kg,73.4 kg,增产作用优于石灰;(2) 提高了土壤pH及土壤中有效磷、钾含量,有一定改土作用。
Phosphogypsum, a new type of soil conditioner for acidic yellow soil in Guizhou Province, has shown in two years of experiments that: (1) corn yield is increased. 667m 2 The yields of maize were increased by 36.7 kg, 55.2 kg and 73.4 kg with 50 kg, 100 kg and 150 kg, respectively. The increase of yield was better than that of lime. (2) Soil pH and soil available P and K were increased, effect.