米麦二毛作体系における麦わらの処理方法が水田雑草の発生量と水稲の生育に及ぼす影響

日本作物学会紀事

大塚 紀夫¹  有馬 進⁴  森敬 亮²  広田 雄二¹  浅川 将暁¹  稲田 稔³  秀島 好知¹  牧山 繁生³  鈴木 章弘⁴ 

[1] 佐賀県農業試験研究センター;佐賀県生産振興部農産課;佐賀県農業技術防除センター;佐賀大学農学部

关键词: 雑草;    焼却;    æ°´ç”°;    すき込み;    麦わら;    Weeds;    Incineration;    Paddy;    Plow-in;    Straw;   

DOI  :  10.1626/jcs.85.122

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In this study, the effect of plowed-in and incinerated wheat straw on the rice growth and weed incidence were examined in local field trials in Northern Kyushu to determine the most suitable method of processing the straw. The weed incidence was suppressed by plowed-in straw more effectively than by incinerated straw.Plowed-in straw suppressed tillering of rice but improved the ripening after heading of rice, tending to increase the yield. In pot experiments, either plowed-in wheat or barley straw greatly suppressed seed germination of paddy weeds. The weed-suppressing effect of plowed-in straw decreased with time but the effect was observed from the autumn of rice harvest to the heading stage of wheat in the next year. Plowing in all of the wheat straw,20-40 kg/a, had a weed suppressing effect, but plowing in 1/10 of the straw, tended to promote weed growth.Thus,plowing in all of the wheat straw in the paddy field suppressed weed incidence and the effect was retained for a long period.

【 授权许可】

Unknown