4438最大成人|麻豆传媒国产AV手机在线播放|泉州市麻豆文化传媒公司|麻豆传媒md0076沈芯语在线|m麻豆传媒映画微博|yy4080香蕉视频|91制片厂制作厂|国产网红主播精品一区二区|sd肉蒲团|国产成人高清亚洲一区潘金莲,爱豆传媒网站视频资源,兔子先生第一,swag在哪看

    高級(jí)檢索

    烤煙保護(hù)性栽培研究初報(bào)

    A Preliminary Research Report about the Protective Cultivation on Flue- Cured Tobacco

    • 摘要: 烤煙保護(hù)性栽培( 煙田覆蓋40 目防蚜網(wǎng)) 試驗(yàn)示范結(jié)果表明, 保護(hù)性栽培煙田的TMV、CMV,、PVY 發(fā)病率明顯低于對(duì)照煙田, 平均產(chǎn)量,、產(chǎn)值、上等煙比例,、純收益都高于對(duì)照煙田,。

       

      Abstract: A protective cultivation test in cured tobacco, which means covering the tobacco field with 40- lattice net guarding against plant louse .It showed that the TMV,CMV,PVY protective cultivation of the tobacco field covering with net was apparently lower than that of the field outside the net. Moreover,the average yield, the output value, the first- class leaf proportion and the profit of the tobacco field with net were higher than that of the field outside the net.

       

    /

    返回文章
    返回