【作者】 杨苞梅； 姚丽贤； 张政勤； 李国良； 何兆桓； 周昌敏； 黄连喜； 涂仕华；

【Author】 Yang Bao-Mei~1,Yao Li-Xian~1,Zhang Zheng-Qin~1,Li Guo-Liang~1,He Zhao-Huan~1,Zhou Chang-Min~1, Huang Lian-Xi~1,Tu Shi-Hua~2 (1 Soil and Fertilizer Institute,Guangdong Academy of Agricultural Sciences,Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation,Guangzhou,510640,Guangdong) (2 International Plant Nutrition Institute Chengdu Office,Chengdu 610066)

【机构】 农业部南方植物营养与肥料重点实验室/广东省养分资源循环利用与耕地保育重点实验室/广东省农业科学院土壤肥料研究所； 国际植物营养研究所成都办事处；

【摘要】 应用土壤养分状况系统研究法(ASI)对广西和福建两省荔枝主产区荔枝园土壤的养分吸附能力进行系统研究。结果显示:(1)广西贵港市土壤对P的吸附率平均为44.3%,K为43.6%,B为19.5%,Zn为18.7%,S为2.1%。玉林市P为48.1%,K为31.9%,B为29.4%,Zn为19.6%,S为7.1%。钦州市P为51.4%,K为22.2%,B为17.7%,Zn为22.5%,S为36.2%。可见,贵港市和玉林市土壤对养分的吸附能力大小均为P>K>B>Zn>S,而钦州市为P>S>Zn>K>B。(2)广西荔枝园土壤对P的吸附率平均为49.5%,K为30.2%,S为18.9%,B为22.6%,Zn为21.1%。而福建P为30.4%,K为23.4%,B为18.5%,S为15.6%,Zn为21.0%。可见,两省荔枝园土壤对磷的吸附均很强(两省荔枝园土壤均属铁铝土,而铁铝氧化物含量丰富),而对钾、硼、锌和硫的吸附能力均相对较弱。广西荔枝园土壤对P、K、S和B的吸附能力显著强于福建(由南向北,铁铝土的富铝化风化程度减弱),而Zn的吸附能力相当。更多还原

【Abstract】 The ASI method is a good method in evaluating the nutrient supplying properties of soils, and thus employed in litchi plantations.The results show:(1) In litchi plantation located in Guigang Guangxi,the average adsorption rate of P on the soil was 44.3%,K was 43.6%,S was 2.1%,B was 19.5%, Zn was 18.7%.In Yulin Guangxi,the average adsorption rate of nutrients on the soil was 48.4%for P, 31.9%for K,7.1%for S,29.4%for B,and 19.6%for Zn.And in Qinzhou of Guangxi,the average adsorption rate of nutrients on the soil was 51.4%for P,22.2%for K,36.2%for S,17.7%for B,and 22.5% for Zn.Therefore,it is clear that the nutrient adsorption abilities of the soils were in an order of P>K>B>Zn>S in Guigang and Yulin,but in an order of P>S>Zn>K>B located in Qinzhou.(2) In Guangxi province,the average adsorption rate of nutrients on the soils was 49.5%for P,30.2%for K,18.9%for S, 22.6%for B,and 21.1%for Zn.But In Fujian province,it turned out to be 30.4%for P,23.4%for K,18.5% for S,15.6%for B,and 21.0%for Zn.It is clear that the soils of the two provinces both have high adsorptions capacities to P(For the soils of the two provinces both belong to ferralsol,which has high content of iron and aluminum oxide),but has low in K,B,Zn and S.And the adsorption abilities to P,K,S and B of the litchi plantation soils in Guangxi are definitely stronger than in Fujian,while the ability to adsorb Zn in the two provinces is about the same.That may be because the degree of rich aluminum and weathering of the ferralsol is gradually weakened from south to north.更多还原