Studies on the micrometeorology of the mulched ground surface of the rows. III. Effects of the difference of the mulching materials and of the mulching methods on the growth of the crop (Part 1)

Autor: Suzuki, Haruo, Uehara, Masaki, Miyagawa, Hideo
Jazyk: japonština
Rok vydání: 1977
Zdroj: 香川大学農学部学術報告. 28:37-49
ISSN: 0368-5128
Popis: application/pdf
In the previous work, some observations were made to clear the heat balances and the micrometeorological properties of the black vinyl film mulched plot, the aluminum foil mulched plot, and of the styrofoam plates mulched plot which were made at the ground surface of the row. In this work, the experiments were made from May to August, 1972, to clear the effects of these mulching materials to the soybean plants which were cultivated at the experiment farm, Kagawa University, Japan. The soybean plants were cultivated in each five plots, namely the no mulch plot, the aluminum foil mulched plot, the black vinyl film mulched plot, the night mulched plot, and the day and the night mulched plot. The observations were performed especially with the relation between the underground temperature and the soybean growth. The following results were obtained. The root nodules were well grown in the day and the night mulched plot which the daily maximum temperature of the underground is not very high and the dirunal range is small, and most poor growth of the root nodules was gained in the black vinyl film mulched plot. Yields of fertile seed were most rich in the day and the night mulched plot too, and this yields accounted for about 30% increase comparing to that of the no mulched plot.
前報においては, 畦面被覆にAlbedoの著しく異なった資材を用い, 或いは断熱材を用いて掛けはずしを行なった場合における, 各処理区の熱収支・微気象特性について明らかにした。 今回は, それらの特性をもった被覆の, 作物に対する影響をみるため, 1972年5月から8月にかけて大豆の栽培を試みた。 既ち, 裸地畦区, アルミ箔被覆区, 黒色ビニールフイルム被覆区, 半被覆区および全被覆区の5区について行ない, とくに地温と大豆の生育との関係について考察した。 得られたおもな結果は, 日最高温度が余り高くなく日較差が小さい区, 既ち全被覆区に根粒の発育がよく, 黒色ビニールフイルム被覆区では最も悪かった。 また, 子実の収量も全被覆区に最も多く, それは裸地畦区の30%増しであった。
Databáze: OpenAIRE
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