农业部副部长万宝瑞要求各地棉区加强三代棉铃虫防治由于今春越冬残存虫口密度高、气候适宜，今年我国一、二代棉铃虫发生明显重于１９９４年。但由于各地各级领导重视，技术措施科学有效，二代棉铃虫防治工作取得良好效果，棉株顶尖被害率控制在５％以下。但是棉田外其他... Vice Minister of Agriculture Wan Baorui urged all cotton areas to strengthen three generations of cotton bollworm control As the spring of this year, the population density of insect survivors remain high and the climate is suitable for this year’s first and second generations of cotton bollworm occurred significantly heavier in 1994. However, due to the attention of leaders at all levels around the country, the technical measures are scientific and effective, and the prevention and control of the second generation cotton bollworm has achieved good results. The top damage rate of cotton plants is controlled below 5%. But outside the cotton field other ...