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《Research Methods in Toxicology and Insecticide Resistance Monitoring of Rice Planthoppers》（图）
Research Methods in Toxicology and Insecticide Resistance Monitoring of Rice Planthoppers K.L. Heong K.H. Tan C.P.F. Garcia L.T. Fabellar Z. Lu
2013/11/20
Rice planthoppers are developing resistance to insecticides very rapidly. Publications by several authors have reported that the brown planthopper (BPH) has acquired as much as 1,000-fold resistance t...
Operation Research Methods in The Forest Management Planning
Operation Research Methods Forest Management Planning
2009/1/23
The purpose of this study is to approximate the actual forest state to an aptimal forest state within different conversion period lenghts, to ensure the sustainability of allowable cut over planning h...