The results of determination of the internal contents of energy substance and the vitality of lipase from post-tender stage of prototype paddy field and non-prototype paddy field of Rice Leaf Roller (Canphlocrocis Medinalis Guenee) and Brown Planthopper (Nilaparvata Lugens Stal) as follow:1. The characteristic of migration can be provided by Rice Leaf Roller. The total fat is the energy substance for migration and its internal lipase with a highly vitality.2. The characteristic of migration also can be prov...