湖南省丘陵区森林红壤化学性质研究

研究了湖南省株洲、桃源和蓝山等市(县)6处森林红壤的化学性质。结果表明,这些土壤的酸性较 强,pH值为4．11-4．96;有机质含量差异明显,为9．5-37．6 g／kg;总氮含量范围宽,为0．321-1．70 g／kg;总磷含 量较低,为0．126-0．441 g／kg;总钾含量较高,达到了10．5-18．1 g／kg;交换性阳离子含量差异大,为3．86-50．6 mmol／kg;阳离子交换容量CEC数值较大,达到了13．9-34．0 cmol／kg。对Cu,Zn,Pb,Cd的测定数据表明,这些土 壤尚无重金属元素的污染。综合考虑调查地的土壤化学性质及植被和地理位置等条件,对试验林地提出了相应的 开发措施与建议。

Study on chemical properties of some forest red soils of Hunan Province

Chemical properties of red soils in 6 places in the forestry of Hunan China were studied. The result indicates,the soils were of strong acidity with pH 4. 11--4. 96; differences in the organic content were obvious,ranging between 9.50--37.6 g/kg;the contents of total nitrogen were not high,0. 321--1.70 g/kg;the content of total phosphorus were 0. 126--0. 441 g/kg;the contents of total potassium were relatively high, up to 10.5--18. 1 g/kg; the content of exchangeability cation were widely different, ranging from 3.86--50. 6 mmol/kg;Exchangeability cation CEC number value were up to 13.9--34. 0 cmol/kg. The survey data of Cu,Zn,Pb and Cd indicate,the soils have not been polluted by heavy metals. In view of such conditions as the soil chemical property,vegetation and geographical position of the ground,etc, synthetically, corresponding development suggestions were put forward.