Effective Accumulated Temperature of Toona sinensis Germination and Its Cropping Techniques in Plastic Green Houses.
-
摘要: 针对在塑料大棚里反季栽培香椿芽的某些关键性技术问题, 系统研究了香椿芽萌发的有效积温, 提出了相应的大棚栽培技术意见。香椿芽萌发的最低临界温度约为6℃。从休眠到萌发所需的有效积温, 因种源、温度、低温处理等的不同而异。尚未落叶的已封顶的非休眠苗, 其萌发有效积温、平均萌发期与休眠苗基本相同, 但萌发率远小于休眠苗。假植和低温处理联合作用, 能有效地促进非休眠苗提早萌发,提高萌发率。Abstract: To counter the key techniques of cropping Toona sinensis buds in plastic green houses, the authors systimatically studied the effective accumulated temperature of Toona sinensis germination. Toona sinensis buds germinated at the minimum critical temperature of 6℃ . The effective accumulated temperature from dormancy to germination varied with the provenances, temperature and treatment methods of low temperature . There was no striking dif ference in the efective accumulated temperature of germination and in mean germination period between undormant shoots and dormant shoots, but germination ratio of undormant shoots was by far lower than that of dormant shoots. The function of combinating temporary planting and low temperature treatment could effectively promote earlier germination of undormant shoots and raise the germination ratio. The relavant cropping techniques inplastic green houses were put forward.
-
Key words:
- Toona sinensis /
- provenance /
- germination /
- dormancy /
- effective accumulated temperature /
- plastic green houses cropping /
- forest vegetable /
-
- 链接本文:
点击查看大图
计量
- 文章访问数: 1133
- HTML全文浏览量: 252
- PDF下载量: 153
- 被引次数: 0
下载:
