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養殖アサクサノリの着生密度と収量との関係 Yoshida, Tadao 3538 吉田, 忠生 ヨシダ, タダオ The relation between the density of Porphyra tenera growing on hibi nets and the final yield was investigated in the experimental cultivation using three sheets of hibi nets having different densities. The cultivation was carried out in the cultivation ground of Matsushima Bay, northeastern Honshu, Japan, in the season from Septmber to December, 1964. During the early stage of growth, the larger yield was obtained in samples of higher density. However, in the well grown state, the yield per 10 cm of hibi string reached a value of about 2 g, being independent of the density of the individuals ranging from 400 to 2000 per 10 cm of hibi string. It is ascertained from the fact mentioned above that the "law of constant final yield" proposed by Kira (1960) is applicable to the community of cultivated Porphyra. departmental bulletin paper 東北区水産研究所 Tohoku Regional Fisheries Research Laboratory 1972-03-20 東北区水産研究所研究報告 32 89 94 Bulletin of Tohoku Regional Fisheries Research Laboratory AN00167637 0049-402X https://fra.repo.nii.ac.jp/records/2007205 jpn tnf_k_32_89 日本農学文献記事索引(agriknowledge) https://agriknowledge.affrc.go.jp/RN/2010052550 metadata only access