Data/hora: 11/06/2024 05:43:48

Provedor de dados: 	19	
País: 	Japan	
Título: 	圧縮法によるキャベツ収穫適期判定の基礎的研究

Basic Study on the Determination of Cabbage Harvest Maturity by Compression Method	
Autores: 	佐藤, 禎稔; 宮本, 啓二; 松田, 清明; SATOW, Tadatoshi; MIYAMOTO, Keiji; MATSUDA, Kiyoaki.	
Data: 	2001-01	
Ano: 	2001	
Palavras-chave: 	結球野菜; 選択収穫; 圧縮試験; 熟度判定; 結球の硬さ; 植物計測; Crisp head vegetable; Selective harvesting; Compression test; Maturity determination; Firmness of head; Measuring plants.	
Resumo: 	近年, キャベツ収穫には一斉方式の収穫機が導入されているが, 実際には生育差が大きいために生産者からは3回程度に分けて選択収穫することが望まれている。本研究は選択収穫機のための適期判定装置の開発を目的とし, 結球頂部を2段階圧縮して変位と荷重の関係から適期判定する方法について検討した。結球は, 熟度が進むほど変位荷重曲線の傾きは大きくなり, 収穫適期となるランク3で最も変位が小さく硬くなる。本判定法の荷重35～40Nの場合, 未熟なランク2では「アーリーボール」で16%,「金系201号」で8%のキャベツを収穫適と誤判定したものの, 収穫適となるランク3では両品種とも81%の精度で適期判定した。 Presently，cabbage harvesting is done manually by selectively picking up cabbage heads directly from the field three times per harvest season. However，researches are being conducted that will lead to the development of simultaneous harvester. In this research，the system that determines the maturity of the cabbage head was developed for selective harvesting. The system determined the maturity by the relationship of the displacement and load of the cabbage head top by two-step compression. In the compression test，the slope of the displacement-load curve increases in maturing cabbages. The minimum displacement measured on the cabbage heads designated as rank 3 out of the four ranks is considered the best stage for harvesting，wherein the cabbage head becomes the firmest. Out of the harvested heads of cabbages (Early ball and Kinkei 201) in rank 3， at the load 01 35-40N，81% accuracy was obtained，and a mixture 01 rank 2(immature cabbage) of  16% (for Early Ball) and 8% (gor Kinkei 201).	
Idioma: 	Japonês	
Identificador: 	http://ir.obihiro.ac.jp/dspace/handle/10322/2958	
Editor: 	農業機械学会	
Formato: 	application/pdf	
Fonte: 	農業機械学会