A Discussion on Indexes and Methods of Economic Evaluation of Lac Insect

Comprehensive methods and formulas of lac insect evaluation were proposed in this paper based on such indexes from lac insect cultivation and production.These formulas could be shown as follows: 1) E=e×p×(1-m)×(1-s) for seed lac; 2)I=(N t+1)/N t=∏(si)·p ♀·F for production and 3)E=p×(1-m)×(1-s)×d for host trees. It is more objective and reasonable for judging the insect on its seed lac, production and host tree adaptability by ways of comprehensive evaluation than that of traditional methods.