棉田瓢虫发生规律及与棉蚜的追随关系

The Occurrence Rule of Ladybug and its Relationship with Aphids in the Cotton Field

通过 4a的系统调查 ,发现瓢虫是棉田天敌的优势种群 ,瓢虫在棉田只有一个峰期。瓢虫与棉蚜有明显的追随关系 ,在不专门用农药防治棉蚜的情况下 。

The investigation indicated that the ladybug was a population of natural enemy with the advantage and there was a peak value of Ladybug growth in cotton field.There was a obvious indenpendent relationship between ladybug and aphid and the ladybug may control the damage of aphid in the cotton field without the use of chemicals.