ホテイアオイ (Eichhornia crassipes Mart. Solms) の生態学的研究, とくに成長について

概要

論文の詳細を見る
SASTROUTOMO, Soetikno S., IKUSIMA, Isao and NUMATA, Makoto (Lab. Ecol., Fac. Sci., Chiba Univ., Chiba). 1978. Ecological studies of waterhyacinth (Eichhornia crassipes Mart. Solms) with special emphasis on their growth. Jap. J. Ecol., 28 : 191-197. Ecological studies of waterhyacinth (Eichhornia crassipes) were conducted in the laboratory as well as in the field. The productivity at the Hanami river, Chiba was decreased in winter in terms of fresh weight and dry weight. Some of the rhizomes still had a good growing ability if placed in a high temperature (25℃). Therefore, it is possible that they can survive the winter in the field of central Japan. The relative growth rate(RGR)^^^- and the doubling time (DT) of waterhyacinth in summer were 5 times higher and 4 times shorter than those in winter respectively, and with addition of fertilizer (10kg NPK/ha) were 8 times higher and 5 times shorter respectively. Besides temperature, the nutrient status of the water was also an important factor for the growth of waterhyacinth.
日本生態学会の論文
1978-09-30