3Davis J L,Chudobiak W J.In situ meter for measuring relative permittivity of soil[J].Geol Surv Can,1975,Part A: 1-79.
4Noborio K.Measurement of soil water content and electrical conductivity by time domain reflectometry: a review[J].Computers and Electronics in Agriculture,2001,31:213-237.
5Thomas W L,Robert G S,Richard R T,et al.Soil water monitoring & measurement[M].Washington: A Pacific Northwest Publication,1994.
6ASAE.Mousetrap key component in irrigation alert system[J].Resource,1997,4(7):5.
7King B A,Wall R W,Taberna J P,et al.Soil water status indicator for improved irrigation management[J].Computers and Electronics in Agriculture,2001,32:31-43.
8Tuener N C.Plant water relations and irrigation management[J].Agricultural Water Management,1990(17):1-3,59-73.
9新华社参考新闻编辑部.世界最新科技[M].北京:光明日报出版社,2000..
10Tanner C B.Plant temperatures[J].Agron J,1963,55: 210-211.
