摘要
花生盆栽试验研究结果表明,施脱硫副产物可增强供试土壤的离子吸附能力,提高土壤持水性和阳离子交换量;施脱硫副产物可显著增强花生对养分的吸收,提高单盆花生养分吸收量,但由于钙的离子拮抗效应增强,在花生生长后期,植株叶片钾、镁、氮质量分数下降,其影响程度与供试物施用量有关;在供试物施用量4.5～15 g/kg条件下,花岗岩红壤上花生增产21.45%～25.59%,砂页岩赤红壤上花生增产40.52%～57.18%.
Results of a pot experiment showed that the ability of soil ion absorption and field soil moisture capacity can be enhanced by supplied with desulphurization byproduct. On the condition that the application rate of desulphurization byproduct in soil amount to 4.5~15 g/kg, field soil moisture capacity is increased by 2.46%~4.21% and CEC is enhanced by 4.6%~22.8% compared with the control treatment in granite red earth, and in arenaceous shale lateritic red earth, the field soil moisture capacity is increased by 3.28%~9.15%, and CEC is enhanced by 4.4%~7.7%. By using desulphurization byproduct, nutrition quantity absorbed by peanut is strengthened in each pot, and when the application rate of desulphurization byproduct is 4.5~15 g/kg, the absorbed nutrient amounts of N, P, K, Ca, Mg, S and B by peanut crop in each pot is enhanced by 15.26%~32.08%、84.72%~108.33%、4.38%~13.92%、118.82%~167.06%、50.34%~62.84%、102.95%~167.57% and 70.07%~120.69%, respectively, but, because of the calcium antagonistic effect, the potassium, magnesium and nitrogen contents of peanut leaves is decreased with the decrease in the application rate of desulphurization byproduct. In this trial, when the application rate of desulphurization byproduct is 4.5~15 g/kg, yield of peanut in granite red earth is increased by 21.45%~25.59%, and in arenaceous shale lateritic red earth is increased by 40.52%~57.18%.
出处
《生态环境》
CSCD
2003年第4期415-418,共4页
Ecology and Environmnet
基金
广东省科技攻关重点项目(2003C321070)
清华大学重点基础研究(985校-06-基础-6)
广东省环保局科技研究项目(2001-09)
关键词
脱硫副产物
花生
营养
desulphurization byproduct
peanut
nutrition
