Study On The Law Of Disaster And The Stage Of Controlling For Aphid Gossypii In Kuitun

Aphid gossypii Glover is one of three major pests of Xinjiang cotton, the emergence of the cotton aphid restricts the quality and output of Xinjiang cotton seriously, exploring that the law of development takes place in the cotton aphid. Putting forward the countermeasure of preventing and controlling the cotton aphid effectively, can provide scientific basis for the rational overall arrangement of the cotton of area of Kuitun, pest controlling, moreover, It is very important to promote sustaining stable development of the production of cotton in Xinjiang.This paper study the cotton aphid of Kuitun cotton district causing disaster the law and come up with the countermeasure through collecting and putting in order meteorological materials, the materials of crop planting zone and cotton field survey that aphid take place. Investigation systematically is used in cotton field about Aphid gossypii in 2002, 2003. These results are as follows:Among influencing cotton aphid population quantity a great deal of factor of growth and decline, the main factor cause cotton aphid population size to increase severely is, such as,1. The suitable temperature is the first key element that the cotton aphid causes disaster;2. The pattern of farming is single, It is the hidden danger of causing disaster that the cotton aphid increases rapidly that the crop is single.3. When the cotton aphid's population size increases severely, it is another factor that a cotton aphid breaks out that the natural enemy accuses of hurting lagging behind;4. No aphid-resisting breeding, it is difficult to lighten the calamity by a large scale;5. There is no enough the stocking of scientific and initiative pest controlling technique. Through the research of the law of the cotton aphid causing, the countermeasure ofpreventing and curing cotton aphid at present:1. Selecting aphids-resisting and bearing breed, it is a sustainable effective way of controlling the cotton aphid's calamity;2. Study agricultural measures and combine biological control and chemical measures to control aphid.3. Scientific planting cotton, the rational pattern of farming of overall arrangement, which is a basic measure of lightening the calamity to control cotton aphid effectively;4. It is the leading technology which controls the cotton aphid's calamity to protect and utilize the natural enemy.5. Strengthen forecast, really gives play to the role of observing and predicting. Controlling pest initiatively and scientifically should be improved. Various kinds of resources of insect forecasting situation should be utilize fully, which will make great efforts to reduce losses that the aphid causes to minimum.