気象条件の地域差とてん菜の生育相

概要

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In order to make clear the effect of different climatic environments on the growing process of sugar beet several experiments were carried out in 1961 and 1962. sugar beet plants were grown under the atmospheric temperature of 10.14℃, 14.96℃ and 15.29℃ (yearly mean in 1961) under the same condition of culture. Materials and methods of cultivation were as follows : Variety G. W 359 was grown. Seed was planted on May 1. The number of plants per ARE was 818. The nutritions, not containing organic matter, were applied soon before the sowing. The mesurements of various plant characters were done every 10 days during the course of experiment. Followings are the results obtained : (1) The fluctuations of the growth curve that was obtained from the sugar beet, grown in the cooler region, were small in comparison with those in the warmer region. (2) The accumulated temperature has a close connection with the number of increased living leaves. (3) The longevity of a living leaf was longer in the cooler, region throughout the whole stage of growing, while the number of living leaves was more decreased than that in the warmer region.
明治大学の論文