论文部分内容阅读
近几年来由于棉铃虫发生严重 ,严重地影响了广大棉农的植棉积极性。 90年代初本市开始引进试种抗虫棉。 1 999年全市种植转 Bt基因抗虫棉品种 (系 ) ,面积达 1 50 0公顷以上。为了降低棉花生产成本 ,探索抗虫棉栽培技术 ,增加植棉效益 ,特进行了转 Bt基因抗虫棉优质高产简化栽?
In recent years due to severe occurrence of cotton bollworm, severely affected the enthusiasm of cotton growers. The city began to introduce test-resistant insect-resistant cotton in the early 1990s. In 1999, Bt cotton varieties (lines) were planted in the city, with an area of more than 1 500 hectares. In order to reduce the cost of cotton production, to explore the cultivation techniques of insect-resistant cotton and to increase the cotton planting efficiency,