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Fundamental studies on production and utilization of edible canna.

食用美人蕉生产与利用基础研究.

基本信息

批准号：
62480035
负责人：
IMAI Katsu
金额：
$ 4.29万
依托单位：
University of Tsukuba
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62480035/
关键词：
Dry matter production Photosynthesis Rhizome yield C N ratio Edible canna Feeding value

项目摘要

Edible canna (Canna edulis Ker.) was cultivated from April to November in 1987 and 1988 at the experimental field of University of Tsfukuba. Rhizomes (ca. 200 g of fresh weight) were planted at a spacing of 0.5 x 1 m. During the growing season, 8 samplings were made and characteristics related to dry matter production were estimated. The results were as follows; 1)Plants emerged two weeks after the planting but vigorous growth occurred during the late July to early September because of high temperature. Dry matter accumulation progressed until November and it attained at 2.1 kg/plant. Leaf area index was kept above 10 for two months and its maximum was 13.5.Biomass productivity was 42 t/ha and rhizome yield was 17.I t/ha. These were due to a good production structure of the crop community as high as 2.7 m. 2)Carbon content of plant was not largely different among plant organs, but nitrogen content was higher in newly developed parts than older parts and 11-15 gN/plant was accumulated. From C/N ratio and dry mass of plants, nitrogen absorption was estimated at 270 kg/ha. 3)Photosynthesis and transpiration were attained maxima three days after the leaf-unrolling and they were characterized to less efficient, sun species with an adaptability to diverse light environment. 4)Sheep with their weight of 45 kg were sustained by 5.5 kg/day of fresh shoots with salt and water, without diminishing their health, indicating a high feeding value. It is concluded that edible canna was more useful than cassava if it is widely cultivated in tropical regions.

美人蕉（Canna edulis Ker.）于1987年和1988年4月至11月在茨城大学试验田栽培。根状茎（ca. 200 g鲜重）以0.5 × 1 m的间距种植。在生长季节，8采样和干物质生产相关的特性进行了估计。结果如下：1）定植后2周出苗，但7月下旬至9月上旬因高温而生长旺盛。干物质积累一直持续到11月，达到2.1 kg/株。叶面积指数连续两个月保持在10以上，最大值为13.5，生物生产力为42 t/ha，根茎产量为17.1t/ha。这是由于作物群落具有良好的生产结构，高达2.7米。2)植株各器官含碳量差异不大，但氮含量以新发育部位为高，平均积累量为11-15 gN/株。根据C/N比和植物干重，氮吸收量估计为270公斤/公顷。3)光合和蒸腾作用在展叶后3d达到最大值，表现为对不同光环境适应性差的低效阳树种。4)绵羊体重为45公斤，每天吃5.5公斤的鲜笋，加盐和水，而不损害它们的健康，这表明它们具有很高的饲养价值。结论是，食用美人蕉是更有用的比木薯，如果它是在热带地区广泛种植。