Study on the spatial distribution and sampling techniques of Panonychus citri Mcgregor
tong wen bin1; xu wei gen2; hu shui quan1; li zeng jia1; huang xiao qing3 (1.agricultural bureau of qujiang district; zhejiang province; qujiang; zhejiang 257200; plant qurantine station of zhejiang province; hangzhou; zhejing 310020; 3. agro technical extension station of houxi township; qujiang district; zhejiang 324017; china)