摘要
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。
The experiment was conducted to investigate the new increase yield technique for managing low middle yield upland and the sustainable development on yellow soil of hills in middle regions of Guizhou, and to find out a utilization way for phospho gypsum, the industry discard waste. The results showed that the maize yields of applying 50 kg, 100 kg and 150 kg per 667m 2 phospho gypsum increased 36.7 kg , 55.2 kg and 73.4 kg compared with CK separately, and its effect for increasing yield was higher than that of applying lime, and that applying phospho gypsum can improve the contents of valuable phosphorous and potassium via raising the pH value of upland. Therefore, phospho gypsum may be used as a new soil recuperation agent.
出处
《贵州农业科学》
CAS
1999年第5期24-26,共3页
Guizhou Agricultural Sciences
基金
国家"九五"科技攻关项目
关键词
新型
土壤调理剂
磷石膏
酸性黄泥土
黄壤
new soil recuperation agent
phospho-gypsum
acidity yellow soil
