液体地膜覆盖对烟苗生长发育的影响  

Effects of Liquid Film Mulching on the Growth and Development of Tobacco Seedlings

作　　者：熊瑛[1] 吕强[1] 王小东[1] 陈明灿[1] 付国占[1] 李友军[1] 

机构地区：[1]河南科技大学农学院,河南洛阳471003

出　　处：《河南农业科学》2007年第7期31-34,共4页Journal of Henan Agricultural Sciences

基　　金：河南省科技攻关项目(0424060032)

摘　　要：研究了塑料地膜覆盖(DM)、液体地膜覆盖(YM)和露地(ck)3种覆盖方式对烟苗生长发育的影响,结果表明,移栽后30 d,45 d,烟株各部位展开叶叶片长宽及叶面积、地上部总干重、根干重、一级侧根数量、二级侧根数量、一级侧根粗、茎基粗和根系活力均表现为DM>YM>ck;液体地膜覆盖在协调烟株地上部与地下部生长关系上作用显著,移栽后30 d 3种覆盖方式的根冠比表现为YM>ck>DM,移栽后45 d的根冠比表现为ck>YM>DM。液体地膜覆盖可以显著促进烟株根系的纵向生长,提高根系活力和抗逆性,防止早衰,是一种清洁、方便、无污染、无残留的新型覆盖材料。Effects of the plastic film mulching （DM） （ck） on the growth and development of flue-cured sults showed that DM〉YM〉ck for all the morpho tested after 30 d and 45 d of transplanting,including , liquid-film mulching tobacco variety NC89 （YM） and open ground were studied. The relogical and physiological characters of tobacco the leaf blade length, breadth and areas, the entire dry-weight above ground, the dry-weight of roots per plant, the numbers of first and second lateral roots per plant, the diameter of first lateral root, the stem-base thickness and root activity. Liquid-film mulching had significant effects on coordinating the growth relations between the aboveground and underground of tobacco. The root/shoot ratio was YM〉ck〉DM after 30 d of transplanting, and ck〉YM〉DM after 45d. YM could greatly promote the longitudinal growth of root, enhanced the root activity and stress resistance, and prevented the early aging. Liquid-film was a new, clean and no-pollution mulching material.

关 键 词：液体地膜 塑料地膜 覆盖 烟草 生长发育 

分 类 号：S572[农业科学—烟草工业]