緑肥レンゲの播種量，播種時期およびすき込み時期が夏ソバの生育・収量に及ぼす影響

日本作物学会紀事

山本 敦洋¹  杉山 久枝¹  杉本 秀樹¹  森元 めぐみ¹ 

[1] 愛媛大学農学部

关键词: Chinese milk vetch;    レンゲ;    Green manure;    ç·‘è‚¥;    Incorporation;    すき込み;    Nitrogen absorption;    窒素吸収;    Reaping;    刈り取り;    Seed yield;    子実重;    Summer buckwheat;    夏ソバ;   

DOI  :  10.1626/jcs.76.45

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Field experiments were conducted to observe the effects of seeding rate, sowing time, and incorporation timing of Chinese milk vetch (CMV) on the growth and yield of summer buckwheat. First, CMV was sown in late October 1998 at a rate of 3.0 gm-2 and incorporated into soil at 20, 10, and 2 days before buckwheat sowing. The amount of incorporated CMV increased with delayed incorporation timing, though there was no significant difference between the buckwheat yield with the incorporation timing. Next, CMV was sown in mid-October 1999 at the different seeding rates of 1.5 g, 3.0 g, and 6.0 gm-2 in the fields having different soil fertility levels. The amount of incorporated CMV and buckwheat yield in the infertile field were lower, though buckwheat yield was almost equal in the plots incorporated 3.0 g and 6.0 gm-2, but low in the plot of 1.5 gm-2. When CMV was sown in late November 2000, the amount of incorporated CMV and buckwheat yield were markedly low even at the seeding rate of 6 gm-2. It was revealed that seed should be sown by the end of October and the optimum seeding rate was 3.0 gm-2. When the amount of incorporated CMV was 5000 gm-2 or more at 2 days before buckwheat sowing, the reaped above ground part of CMV can be used as feed or green manure for other crops, because the stubble and underground part was sufficiently effective for improving buckwheat yield.

【 授权许可】

Unknown