Plant nematodes has become the world one of the important diseases in agricultural production, causing serious economic losses each year. So far, the control of plant nematodes disease prevention and control of chemical pesticides is still the main means, but the pesticide residues not only affects the health of people and livestock, but also seriously damage the ecological environment. Piezoelectric biosensor is a new pesticide residue detection methods, is sensitive, specific, real-time micro-and fast tha...