Sdudy on the Economic Threshold of Tea Leafhopper (Empoasca vitis Gothe)
Effect of different densities of Empoasca vitis on the yield loss rate and the damage indexes of fresh tea leaves was evaluated with the net method. Based on the results, the linear correlation equation was obtained for analysis on pest densities and economic loss rate of fresh tea leaves. The economic threshold of the pest for oolong tea and green tea at different areas, tea seasons and fresh tea prices was put forward.
国家科技期刊平台
NSTL
万方数据
维普
