花岗岩侵蚀区优良水土保持绿肥的选择及评价研究

Selection and Evaluation of Soil and Water Conservation’s Green Manure in Granite Erosion Area

选择了9种绿肥在江西宁都的花岗岩侵蚀区进行3年定位试验,通过对出苗率、成活率、平均分蘖数、覆盖度、地上部分浸水容重、根系鲜重、地上部分生物鲜重、土壤有机质等指标进行观测,并采用层次分析法和模糊数学方法对试验品种进行综合评价,从中优选出印度豇豆、大叶猪屎豆、小叶猪屎豆、木豆和草木樨5种优良绿肥品种在花岗岩侵蚀区生长良好。

9 kinds of green manure were selected to plant in granite erosion area, Ningdu county, Jiangxi Province. Based on three-years filed test and investigated some indexes of test green manure including rate of seedlings emergence, survival rate, average tiller number, vegetation coverage, fresh weight of root, upland part of grass＇s unit weight and biomass, soil organic matter etc. , the study used the method of Analytic Hierarchy Process （AHP） and Fuzzy Mathematics to evaluate these green manure. The result showed Viagna Sinensis Savi, Viagna Sinensis Savi, Crotalarla linifolia vat. stenophylla, Cajanuscajan and Melilotus albus Desr could grow well in test area. And these green manures were suitable to plant some areas which had the similar nature condition to the test area .