19 kinds of grasses were selected to plant in the granite erosion area

Ningdu County and the quaternary red soil erosion area

De'an County

Jiangxi Province.In the three year field experiment

the indexes of rate of seedlings emergence

survival rate

average tiller number

vegetation coverage

fresh weight of root

upland part of grass's unit weight and biomass

and soil organic matter were investigated.The method of analytic hierarchy process(AHP) and fuzzy mathematics were used to evaluate the grasses.Results show that Palspalum notatum Flugge and Paspalum wettsteinit Hackel can grow well in the two test areas;Melinis minuciflora

Styiosanthes guianensis(Aubi) SW.

Setaria palmifolia.

Kummerowia striata(Thunb.)Schindl

and Digitaria sanguinalis can grow well in the granite erosion area;and Eragrostis pilosa

Lolium L.

Cynodon dactylon

Eremochloa ophiuroides

and Sorghum sudauense can grow well in the quaternary red soil erosion area.