权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

直播と地下点滴潅がいによる水稲－コムギ輪作体系の生産力と環境負荷低減効果の検証

直播和地下滴灌稻麦轮作系统的生产力和环境影响验证

基本信息

批准号：
21H02173
负责人：
豊田正範
金额：
$ 11.65万
依托单位：
Kagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2025-03-31
项目状态：
未结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21H02173/
关键词：
水稲直播輪作体系生産性温室効果ガス

项目摘要

本研究は直播と地下点滴潅がい栽培による水稲－コムギの輪作体系における生産性と温室効果ガス排出量削減による環境負荷低減効果の検証が目的である．2021年度に引き続き，2022年度は香川大学農学部内の畑地と水田の両試験圃場にて，水稲－コムギ輪作の栽培試験を実施した．水稲栽培では，畑地圃場の点滴潅がい区に点滴チューブを地表面からの深さ20cmに埋設した．6月10日に種子間隔3cmのシードテープを条間30cmで1畝につき6条を播種した．水田の湛水栽培区には6月16日に株間15cm，条間30cmで移植した．点滴潅がい区の日々の潅水量は推定蒸発散量と作物係数により決定し，降雨の際は適宜潅水を控えた．湛水栽培区は代かきから成熟期の収穫直前まで常時湛水状態とした．生育期間中には地上部乾物重，葉面積，積算吸収日射量，葉齢，茎数，SPAD値などの調査を定期的に実施した．点滴潅がい区の全乾物重，全籾数，穂数は湛水栽培区を上回っていたが，登熟歩合，玄米千粒重，収穫指数は湛水栽培区より低かったため，結果的に収量は湛水栽培区と同水準となった．生育期間中は毎週1回，圃場から排出される二酸化炭素（CO2），亜酸化窒素（N2O），メタン（CH4）フラックスをチャンバー法により測定した．水稲の収穫後にコムギ品種さぬきの夢の栽培を実施した．畑地圃場と水田の前作跡に裁断した前作の稲わらを散布して耕運機で浅く耕起し，種子間隔2.5cmのシードテープを条間25cmで播種した．播種日は畑地圃場が11月15日，水田が11月17日である．畑地圃場では播種作業は順調で，発芽，苗立は良好であった．一方，水田では播種時に土壌が過湿状態で発芽，苗立も不良であった．このため，水田では比較的発芽が揃っている一部区画のみを調査対象としている．成熟と収穫時調査は5月下旬の見込みであり，その後，できるだけ速やかに水稲栽培を開始する予定である．

In this study, the direct seeding plant was planted in the ground, and the plant was planted in the ground. In this study, the greenhouse emissions were cut, the environmental load was low, and the environment was low. In 2021, the field experiment was conducted in the department of agriculture of Xiangchuan University, and water cultivation was conducted in the department of agriculture of Xiangchuan University in 2022. In the nursery field, the 20cm was buried on the surface of the field. On June 10, there were 6 kinds of seeds sown between 30cm and 30cm in the cultivation area of paddy field and Zhanshui on June 10. In the cultivation area of paddy field and Zhanshui on June 16, there was 15cm among plants, and 30cm was transplanted between bars. the daily net water consumption in the drip plot was estimated, and the evapotranspiration of crops was determined. During the growing period, the dry matter of the upper part of the plant is heavy, the noodles are dry, the amount of solar radiation, the number of stems, the amount of solar radiation, the number of stems, the amount of dry matter, the total dry matter weight, the total dry matter weight, In the cultivation area of Zhanshui, the grain weight of Xuanmi and the index of rice in Zhanshui were similar to those in Zhanshui, and the results showed that the yield in the cultivation area of Zhanshui was the same as that in Zhanshui. During the period of growth, there was one cycle in the middle of the growth period, and diacidized carbon (CO2) and asphyxiant (N2O) were excreted from the nursery garden. CH4 was used to measure and determine the quality of rice. After the water was washed, the cultivation and cultivation of different varieties of rice were cut off. Before the nursery, the paddy field was cut off. Before the cultivation of the paddy field, it was cut to spread the shallow tillage of the ploughing machine, and the 2.5cm was used to spread the planter to sow all kinds of rice in the 25cm. On November 17, the paddy field was in good condition. On the one hand, when the paddy field was sowed, the soil sprouted in a wet state, the seedling was in a bad state, and the paddy field was in bad shape. the paddy field is in good condition, and in the paddy field on November 17, the paddy field is in good condition on November 17th. After the start of the season, the cultivation of the water supply will begin as soon as possible.