不同种植年限黄蜀葵根际土养分变化规律(3)
[7] 李明晶，孙华云，刘亦凡.镁在植物生长中的作用及镁肥[J].硫磷设计与粉体工程，2009，4：36.
Status and changes of soil nutrients in rhizosphere of
Abelmoschus manihot different planting age
TANG Li-xia TAN Xian-he ZHANG Yu LIU Xiao-ning
(1.Nanjing University of Chinese Medicine， Nanjing 210046， China；
2.Jiangsu Xian He Chinese Herbal Medicine Science &Technology Co.， Ltd.， Yixing 214235， China)
[Abstract] Using soil chemical analysis method and combining with ICP-AES determination of mineral nutrition element content in rhizosphere soil of different planting age Abelmoschus Corolla.Results show that along with the increase of planting age， the nitrogen(total N)， available P and organic matter in rhizosphere soil of Abelmoschus Corolla content declined year by year and the soil got acidification.Heavy metal element content in agricultural land does not exceed national standards， but the content of element mercury(Hg) in rhizosphere soil of different planting age Abelmoschus Corolla declined.Request of microelement such as manganese(Mn) and zinc (Zn) had a increase tendency， but the content of magnesium (Mg) and sodium (Na) increased， and other nutrient elements had no changed rules or unchanged apparently.Consequently， exploring the change rules of different planting age Abelmoschus Corolla soil in rhizosphere as theoretical guidance of rational fertilization and subducting continuous cropping obstscles.
[Key words] Abelmoschus manihot； planting age； soil nutrient
doi：10.4268/cjcmm20132215
[责任编辑 吕冬梅], 百拇医药(唐立霞 谈献和 张瑜 刘小宁)
Status and changes of soil nutrients in rhizosphere of
Abelmoschus manihot different planting age
TANG Li-xia TAN Xian-he ZHANG Yu LIU Xiao-ning
(1.Nanjing University of Chinese Medicine， Nanjing 210046， China；
2.Jiangsu Xian He Chinese Herbal Medicine Science &Technology Co.， Ltd.， Yixing 214235， China)
[Abstract] Using soil chemical analysis method and combining with ICP-AES determination of mineral nutrition element content in rhizosphere soil of different planting age Abelmoschus Corolla.Results show that along with the increase of planting age， the nitrogen(total N)， available P and organic matter in rhizosphere soil of Abelmoschus Corolla content declined year by year and the soil got acidification.Heavy metal element content in agricultural land does not exceed national standards， but the content of element mercury(Hg) in rhizosphere soil of different planting age Abelmoschus Corolla declined.Request of microelement such as manganese(Mn) and zinc (Zn) had a increase tendency， but the content of magnesium (Mg) and sodium (Na) increased， and other nutrient elements had no changed rules or unchanged apparently.Consequently， exploring the change rules of different planting age Abelmoschus Corolla soil in rhizosphere as theoretical guidance of rational fertilization and subducting continuous cropping obstscles.
[Key words] Abelmoschus manihot； planting age； soil nutrient
doi：10.4268/cjcmm20132215
[责任编辑 吕冬梅], 百拇医药(唐立霞 谈献和 张瑜 刘小宁)