【摘要】 红壤长期连作花生导致严重连作障碍,影响花生生产。本试验研究了磷化工废弃物磷石膏在缓解花生连作障碍上的效果,将磷石膏与化学氮肥、化学磷肥、化学钾肥按不同比例制成磷石膏专用复混肥,在中国科学院鹰潭农业生态实验站花生连作田块进行试验,研究该专用复混肥对红壤养分、花生生理性状及产量的影响。结果表明,施用磷石膏专用复混肥较使用常规复合肥增产3.5%~45.1%,土壤中的全氮、速效氮和速效钾含量升高,植株全氮、全磷、全钾含量均有提高,施用磷石膏专用复混肥可以有效缓解红壤地区花生连作障碍。更多还原

【Abstract】 Peanut production has been severely repressed by sick soil resulting from long-term monoculture of peanut in red field in Jiangxi Province,China. Phosphorus chemical waste solid,phosphogypsum,was investigated to alleviate the sick soil due to continuous monocropping of peanut in red soil. Mixture of phosphogypsum with chemical nitrogen,phosphate and potassium fertilizer in a different ratio were applied to peanut plots in Yingtan Experimental Station of Agricultural Ecology,Chinese Academy of Sciences to assess their effect on nutrients of red soil and peanut yield and physiological and biochemical properties. The results showed that peanut yield in treatment of phosphogypsum-containing mixed fertilizer was increased by 3. 5% ~ 45. 1% compared to comventional fertilizer treatments. The soil total nitrogen,available nitrogen and potassium was increased,while plant total N,P,K were raised compared with control. This indicated man-made phosphogypsum-containing mixed fertilizer would effectively relieve sick soil in red soil in the region of continuous monocropping of peanuts.更多还原