Soil nutrient and leaf nutrient content of common landscape plants in Hengqin island of Guangdong province
In this study,the nutrient content of leaves and soil of sixteen garden plants were analyzed in Hengqin of Zhuhai of Guangzhou,Guangdong Province.Results showed that the contents of N,P and K in plant leaves ranged from 9.79-31.63,1.25-3.23 and 5.25-22.58 g/kg,respectively;soil pH ranged from 6.04 to 8.15,soil organic matter ranged from 3.86 to 21.63g/kg.Generally,there were significant differences in total N,total P,total K and available N,available P and available K contents among plant soils.The overall soil fertility was poor with low organic matter and N contents,and P content was slightly low,whereas K content was medium.The plants were grouped using cluster analysis:the plants were divided into five categories according to their leaf nutrient content,the first kind included Phildendron sellomn,Ficus microcarpa'Golden Leaves',Schefflera odorata'Variegata',A lpinia zerumbet'Variegata',Aglaia odorata,Ophiopogon intermedius'Argenteo-marginatus',Lantana camara,Duranta repens,and Cordyline frutieosa,the second kind included Sansevieria trifasciata,Ficus elastic and Excoecaria cochinchinensis,Ruellia tuberosa belonged to the third,Hibiscus rosa-sinensis and Allamanda schottii belong to the fourth,Calliandra haematocephala belong to the fifth class.Generally,the leaf nutrient content decreased in the order of the first kind ＞ the third kind and the forth kind ＞ the second kind and the fifth kind;the soil nutrient indexes were grouped using cluster analysis,soils under the plants were divided into five categories,the first category included P sellomn,F microcarpa'Golden Leaves',D.repens,H.rosa-sinensis,C fruticosa,S.trifasciata,E.cochinchinensis,R.tuberosa,O.intermedius'Argenteo-marginatus',L.camara and F.elastica,A.schottii belonged to the second category,the third category included C.haematocephala and A.odorata,and S.odorata'Variegata'and A.zerumbet'Variegata'belonged to the fourth class and the fifth class,respectively Generally,the soil fertility decreased in the order of the fourth kind ＞ the second kind ＞the fifth kind ＞ the first kind ＞ the third kind.
NETL
NSTL
万方数据
维普
