论文部分内容阅读
BT棉是中国农科院棉花研究所利用世界最新生物基因工程,将BT基因注入棉籽内,经8年培育和筛选而成。 特征特性:全生育期117～125天,结铃性强而集中,脱落率低,铃卵圆型,单铃重4～4.8克,衣分率37～39.6％,子指9.7克,吐絮畅,株高80～100厘米,株型紧凑,叶片中等偏小且上倾,透光性好,光合作用强。亩产皮棉60～75公斤。 抗虫性能:经河南省开封县大李庄农科所在两年大田试验普遍调查,棉铃虫取食后,死亡率为80～85.7％,抗虫性能优于或相当于常规农药的防治效果。
BT Cotton is a cotton institute of Chinese Academy of Agricultural Sciences using the world’s latest bio-genetic engineering, the BT gene into cottonseed, after eight years of cultivation and screening. Characteristics: The whole growth period of 117 ~ 125 days, strong and concentrated knot ring, the low rate of shedding, bell oval, boll weight 4 ~ 4.8 grams, 37 ~ 39.6% rate of clothing, sub-refers to 9.7 grams, , Plant height of 80 to 100 cm, plant compact, medium-sized leaves and tilt, good light transmission, strong photosynthesis. Lint per mu 60 to 75 kg. Insecticidal properties: By Kaifeng County, Henan Province, Li Zhuang agricultural field trials two years in a general survey, bollworm feeding, the mortality rate of 80 to 85.7%, pest resistance is superior to or equivalent to conventional pesticide control effect.