6[6]Athawale V D,Vidyagauri Lele.Graft copolymerization onto starch.Ⅱ.Grafting of acrylic acid and preparation of its hydrogen[J].Carbohydrate polymers,1998,35(01) :21 - 27.
7[7]Kiatkamjornwong Suda,Chomsaksakul Wararuk,Sonsuk Manit.Radiation modification of water absorption of cassava starch by acrylic acid/amide[J].Radiation Physics and Chemistry,2000,59(4) :413 - 427.
8Beard J B . Turfgrass: Science and culture [M]. Englewood Cliffs,N J: Prentice Hall,1973.
9Huang B R , J D Fry. Root anatomical, physiological, and morphological responses to drought stress for tall fescue cultivars[J].Crop Science, 1998,38:1017-1022.
10Turgeon A J. Turfgrass Management[A]. Prentice Hall, Vpper Saddle River[M]. New Jersey: 1996,15-42.