The Influence To Grassland Locust's Diversified Of The Metarhizium Anisopliae

Xilinguole grassland of the Inner Mongolia Autonomous Region belongs to typical steppe grassland, and it is the best protected grassland in all of the existing ecological environment of grassland in our country at present, but in recent years it becomes the region where has many locust plague. Locust calamity has became one of the grave disservice to agriculture animal husbandry. The diversity of the grasshoppers and the protect effect of Metarhizium flavoviride anti grasshoppers to the ecological environment were studied in this article. The main research result as follow: 1 The connection analysis between the feeding amount of grasshopper and grasshopper occurrenceDifferent locust have great difference in intake. The intake of Chorthippus dubius is 0.00447 g/one-day in 3rd instar, 0.01 g/one-day in 4th instar, 0.01428 g/one-day in 5th instar, 0.01835 g/one-day in adult. The intake of Myrmeleatettix palpapis is 0.00486 g/one/day in 3rd instar, 0.00747 g/one-day in 4th instar, 0.01176 g/one-day in 5th instar, 0.01937 g/one-day in adult. And the Oedaleus asiaticus B.Bienko's intake is 0.0355 g/one-day in 3rd instar,0.0694 g/one/day in 4th instar, 0.1824 g/one-day in 5th instar, 0.1475 g/one-day in adult.2. The influence to grass output by the locust occuringForage growth in different years has great difference. In finer years, forage grows well, have strong compensation capability and can suffer the jeopardize form grasshopper with big feeding and big body likes Oedaleus asiaticus . while in the drought years, forage grows not good, compensation capability is feebleness and can not endure such jeopardize. Under this circumstance, the predominance species well change to Chorthippus dubius and Myrmeleatettix palpapis which have smaller feeding. Those two kinds of grasshoppers have smaller feeding than Oedaleus asiaticus, even occurs in high density it.3 Metarhizium flavoviride prevention and cure grassland locust impact on the bio-diversity of grasslandCompare with the three prevention and care sections of Metarhizium anisopliae,...