タイトル |
いちじく「桝井ドーフィン」一文字整枝の生産性の高い樹相と診断 |
担当機関 |
愛知県農業総合試験場 |
研究期間 |
1995~1995 |
研究担当者 |
|
発行年度 |
1995 |
要約 |
いちじくの一文字整枝における着果と果実の発育からみた好適樹相は、7月下旬の結果枝基部径18~23mm、結果枝長100~150cmの範囲である。また、好適樹相を維持するには細根が20~30cmまで分布できる土壌条件をつくることが必要である。
|
背景・ねらい |
いちじくは、樹勢の強弱により着果量・収量・果実品質が大きく変動する。また、作業能率に優れる一文字整枝法が採用されることが多いが、従来のX字整枝に比べて結果枝の勢力を揃えるのが難しく、樹勢が弱く生産の安定性にやや欠ける。そこで、一文字整枝の生産性の高い樹相の実態を調査して、その診断方法を示す。
|
成果の内容・特徴 |
- 南知多町と美浜町の「桝井ドーフィン」の一文字整枝16園について実態調査を行った結果、根群分布と樹の生育相互間に高い相関が認められる。
- 地上部と地下部の生育を指標化することにより、その関係は一層明確になり、結果枝の総伸長量「指標A」より枝の太さを加味した「指標B」と地下部の指標「主根群域」との間の相関が高い(表2)。
- 結果枝基部の太さを区分した樹相診断では、基部が太いほど結果枝が長く着果数も多い。
- 果実肥大の良否を10節の横径でみると、結果枝の基部径15mm以上は差がみられない(表3)。
- 一文字整枝の好適樹相は、結果枝基部径18~23mm、結果枝長100~150cmの範囲にあると推定できる。
- 好適樹相を維持するには、根群域の大きさが強く影響しており、樹相パターンからみて、生育指標B3,000cm3、主根群域1.5m3で、細根が20~30cmまで分布できる土壌条件をつくることが必要である(表4)。
|
成果の活用面・留意点 |
この樹相診断基準は、2m×5mの標準栽植距離を前提に策定したものである。土壌条件により樹勢の強弱が生じるため、あらかじめ土壌条件の良否により株間を調節して栽植距離を決めることが望ましい。
|
図表1 |
![214874-1.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/214874-1.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGoaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAKgXPdz7uIneN8R8NGJaYE0917flVchU2l0UNrWdaJIZAiEAuqcpXXfimyiMURsU2xXE3bOlei3SAAt4xbZLeUCSU%2BwqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDAGAiCuzD5itn4gdHirtA1H0q15TFtQpPKzNRkxGGx1W%2Bc4sELj5y%2FSFR0vdmogANf7Az0ChhLQaRzrFH4jyQuGGtv0uzkxcKkHW6%2FYZQmaDO0YgBdKX3pcjZCRGjeqeT%2Ft2GcPCrbX2jvh4n8APBPoJc5NUlYW3cTmzb4NgGswNbhRDHgcmf8QKYZ9lpWZ2Jsc5sTh0mwSWY3bFdc6XEmvG4QbEX3%2BXwlvZuv33Ix36VP58bqLXumrdEwtnwwVggYiWOFdI2G9o9G8BbV0F%2F2Bcz4hYPolIL8oZ%2FDdfycunSfYzQKQ71b8obyB4g8FQ6CUaCshQxeC6tipIGhRLXu9UGJLcJJdDJeTEmyUllhUBckUHVRkY3aBd658dPUlcTW7BCBMwCLShEGMzkmvxDb%2BxbJCVkQVA2KRbIfXqnhOgtT7Hhk3pQ6y1Hpp4Jt3HaJ9tNoykcsZ76ywWdWYT4gV%2FyVrAVzhEWgv7coizJoBkQ2y2SDBAPR7jHZwtCxG5CYwukp8Vq28pZX3F%2BwrzeWhLkS5khD6j3M2ma68BE052CWNcFjxnQimhdpfxF7cDyl458qddT7RiiI2yziXrv8kDvVilK6nAjQvYajSzvzLQoOYKrBzIBh19iRrmZ6uKHNLm8hsSwK%2FO%2B9ejIynofpUsXePmcci99icxdMUwvJXPtgY6pQFPVxz6LAqDWKHOPxeEFosRlbrqKNqcs%2FrPOH3eGLnfS9AxEaKI%2BU5nF5Y4WLurNG8fWKUE5TA%2Bd314kIlzT1%2F3TsIrnbwsfVebX4cvi42Afl6PiN2002OGVtGKO2IBbKld1Bsd1vjHSyBIX8b9CXO2pE2CMisSbDytenUoJn12LLaUssOCj3DEGgqN2emLozOIm27hpAL29kHw9f6oeSW7SnsGaTQ%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU52N7AGEO%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T021145Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=c8894e19e61aa736bd280467a25032f1a7ed97ee73670cba175365fa2f7fdd3c) |
図表2 |
![214874-2.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/214874-2.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGoaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAKgXPdz7uIneN8R8NGJaYE0917flVchU2l0UNrWdaJIZAiEAuqcpXXfimyiMURsU2xXE3bOlei3SAAt4xbZLeUCSU%2BwqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDAGAiCuzD5itn4gdHirtA1H0q15TFtQpPKzNRkxGGx1W%2Bc4sELj5y%2FSFR0vdmogANf7Az0ChhLQaRzrFH4jyQuGGtv0uzkxcKkHW6%2FYZQmaDO0YgBdKX3pcjZCRGjeqeT%2Ft2GcPCrbX2jvh4n8APBPoJc5NUlYW3cTmzb4NgGswNbhRDHgcmf8QKYZ9lpWZ2Jsc5sTh0mwSWY3bFdc6XEmvG4QbEX3%2BXwlvZuv33Ix36VP58bqLXumrdEwtnwwVggYiWOFdI2G9o9G8BbV0F%2F2Bcz4hYPolIL8oZ%2FDdfycunSfYzQKQ71b8obyB4g8FQ6CUaCshQxeC6tipIGhRLXu9UGJLcJJdDJeTEmyUllhUBckUHVRkY3aBd658dPUlcTW7BCBMwCLShEGMzkmvxDb%2BxbJCVkQVA2KRbIfXqnhOgtT7Hhk3pQ6y1Hpp4Jt3HaJ9tNoykcsZ76ywWdWYT4gV%2FyVrAVzhEWgv7coizJoBkQ2y2SDBAPR7jHZwtCxG5CYwukp8Vq28pZX3F%2BwrzeWhLkS5khD6j3M2ma68BE052CWNcFjxnQimhdpfxF7cDyl458qddT7RiiI2yziXrv8kDvVilK6nAjQvYajSzvzLQoOYKrBzIBh19iRrmZ6uKHNLm8hsSwK%2FO%2B9ejIynofpUsXePmcci99icxdMUwvJXPtgY6pQFPVxz6LAqDWKHOPxeEFosRlbrqKNqcs%2FrPOH3eGLnfS9AxEaKI%2BU5nF5Y4WLurNG8fWKUE5TA%2Bd314kIlzT1%2F3TsIrnbwsfVebX4cvi42Afl6PiN2002OGVtGKO2IBbKld1Bsd1vjHSyBIX8b9CXO2pE2CMisSbDytenUoJn12LLaUssOCj3DEGgqN2emLozOIm27hpAL29kHw9f6oeSW7SnsGaTQ%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU52N7AGEO%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T021145Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=dabea023fa5e75f1b8efad1646c72945b676caf66d8f86424b13af1d457f621f) |
図表3 |
![214874-3.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/214874-3.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGoaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAKgXPdz7uIneN8R8NGJaYE0917flVchU2l0UNrWdaJIZAiEAuqcpXXfimyiMURsU2xXE3bOlei3SAAt4xbZLeUCSU%2BwqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDAGAiCuzD5itn4gdHirtA1H0q15TFtQpPKzNRkxGGx1W%2Bc4sELj5y%2FSFR0vdmogANf7Az0ChhLQaRzrFH4jyQuGGtv0uzkxcKkHW6%2FYZQmaDO0YgBdKX3pcjZCRGjeqeT%2Ft2GcPCrbX2jvh4n8APBPoJc5NUlYW3cTmzb4NgGswNbhRDHgcmf8QKYZ9lpWZ2Jsc5sTh0mwSWY3bFdc6XEmvG4QbEX3%2BXwlvZuv33Ix36VP58bqLXumrdEwtnwwVggYiWOFdI2G9o9G8BbV0F%2F2Bcz4hYPolIL8oZ%2FDdfycunSfYzQKQ71b8obyB4g8FQ6CUaCshQxeC6tipIGhRLXu9UGJLcJJdDJeTEmyUllhUBckUHVRkY3aBd658dPUlcTW7BCBMwCLShEGMzkmvxDb%2BxbJCVkQVA2KRbIfXqnhOgtT7Hhk3pQ6y1Hpp4Jt3HaJ9tNoykcsZ76ywWdWYT4gV%2FyVrAVzhEWgv7coizJoBkQ2y2SDBAPR7jHZwtCxG5CYwukp8Vq28pZX3F%2BwrzeWhLkS5khD6j3M2ma68BE052CWNcFjxnQimhdpfxF7cDyl458qddT7RiiI2yziXrv8kDvVilK6nAjQvYajSzvzLQoOYKrBzIBh19iRrmZ6uKHNLm8hsSwK%2FO%2B9ejIynofpUsXePmcci99icxdMUwvJXPtgY6pQFPVxz6LAqDWKHOPxeEFosRlbrqKNqcs%2FrPOH3eGLnfS9AxEaKI%2BU5nF5Y4WLurNG8fWKUE5TA%2Bd314kIlzT1%2F3TsIrnbwsfVebX4cvi42Afl6PiN2002OGVtGKO2IBbKld1Bsd1vjHSyBIX8b9CXO2pE2CMisSbDytenUoJn12LLaUssOCj3DEGgqN2emLozOIm27hpAL29kHw9f6oeSW7SnsGaTQ%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU52N7AGEO%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T021145Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=71f6c9dd4ee816758ce431fc9193dc2727dd5dfd270f1cba1defd36f99bbf02e) |
図表4 |
![214874-4.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/214874-4.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGoaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAKgXPdz7uIneN8R8NGJaYE0917flVchU2l0UNrWdaJIZAiEAuqcpXXfimyiMURsU2xXE3bOlei3SAAt4xbZLeUCSU%2BwqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDAGAiCuzD5itn4gdHirtA1H0q15TFtQpPKzNRkxGGx1W%2Bc4sELj5y%2FSFR0vdmogANf7Az0ChhLQaRzrFH4jyQuGGtv0uzkxcKkHW6%2FYZQmaDO0YgBdKX3pcjZCRGjeqeT%2Ft2GcPCrbX2jvh4n8APBPoJc5NUlYW3cTmzb4NgGswNbhRDHgcmf8QKYZ9lpWZ2Jsc5sTh0mwSWY3bFdc6XEmvG4QbEX3%2BXwlvZuv33Ix36VP58bqLXumrdEwtnwwVggYiWOFdI2G9o9G8BbV0F%2F2Bcz4hYPolIL8oZ%2FDdfycunSfYzQKQ71b8obyB4g8FQ6CUaCshQxeC6tipIGhRLXu9UGJLcJJdDJeTEmyUllhUBckUHVRkY3aBd658dPUlcTW7BCBMwCLShEGMzkmvxDb%2BxbJCVkQVA2KRbIfXqnhOgtT7Hhk3pQ6y1Hpp4Jt3HaJ9tNoykcsZ76ywWdWYT4gV%2FyVrAVzhEWgv7coizJoBkQ2y2SDBAPR7jHZwtCxG5CYwukp8Vq28pZX3F%2BwrzeWhLkS5khD6j3M2ma68BE052CWNcFjxnQimhdpfxF7cDyl458qddT7RiiI2yziXrv8kDvVilK6nAjQvYajSzvzLQoOYKrBzIBh19iRrmZ6uKHNLm8hsSwK%2FO%2B9ejIynofpUsXePmcci99icxdMUwvJXPtgY6pQFPVxz6LAqDWKHOPxeEFosRlbrqKNqcs%2FrPOH3eGLnfS9AxEaKI%2BU5nF5Y4WLurNG8fWKUE5TA%2Bd314kIlzT1%2F3TsIrnbwsfVebX4cvi42Afl6PiN2002OGVtGKO2IBbKld1Bsd1vjHSyBIX8b9CXO2pE2CMisSbDytenUoJn12LLaUssOCj3DEGgqN2emLozOIm27hpAL29kHw9f6oeSW7SnsGaTQ%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU52N7AGEO%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T021145Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=2e45b3bdfcff583fa3f80293a164b62a0d470f8dac984e4f6308d1b92a35a1ff) |
図表5 |
![214874-5.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/214874-5.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEGoaDmFwLW5vcnRoZWFzdC0xIkgwRgIhAKgXPdz7uIneN8R8NGJaYE0917flVchU2l0UNrWdaJIZAiEAuqcpXXfimyiMURsU2xXE3bOlei3SAAt4xbZLeUCSU%2BwqmQQIg%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FARACGgw1MzIzMzEwNzIwNDEiDAGAiCuzD5itn4gdHirtA1H0q15TFtQpPKzNRkxGGx1W%2Bc4sELj5y%2FSFR0vdmogANf7Az0ChhLQaRzrFH4jyQuGGtv0uzkxcKkHW6%2FYZQmaDO0YgBdKX3pcjZCRGjeqeT%2Ft2GcPCrbX2jvh4n8APBPoJc5NUlYW3cTmzb4NgGswNbhRDHgcmf8QKYZ9lpWZ2Jsc5sTh0mwSWY3bFdc6XEmvG4QbEX3%2BXwlvZuv33Ix36VP58bqLXumrdEwtnwwVggYiWOFdI2G9o9G8BbV0F%2F2Bcz4hYPolIL8oZ%2FDdfycunSfYzQKQ71b8obyB4g8FQ6CUaCshQxeC6tipIGhRLXu9UGJLcJJdDJeTEmyUllhUBckUHVRkY3aBd658dPUlcTW7BCBMwCLShEGMzkmvxDb%2BxbJCVkQVA2KRbIfXqnhOgtT7Hhk3pQ6y1Hpp4Jt3HaJ9tNoykcsZ76ywWdWYT4gV%2FyVrAVzhEWgv7coizJoBkQ2y2SDBAPR7jHZwtCxG5CYwukp8Vq28pZX3F%2BwrzeWhLkS5khD6j3M2ma68BE052CWNcFjxnQimhdpfxF7cDyl458qddT7RiiI2yziXrv8kDvVilK6nAjQvYajSzvzLQoOYKrBzIBh19iRrmZ6uKHNLm8hsSwK%2FO%2B9ejIynofpUsXePmcci99icxdMUwvJXPtgY6pQFPVxz6LAqDWKHOPxeEFosRlbrqKNqcs%2FrPOH3eGLnfS9AxEaKI%2BU5nF5Y4WLurNG8fWKUE5TA%2Bd314kIlzT1%2F3TsIrnbwsfVebX4cvi42Afl6PiN2002OGVtGKO2IBbKld1Bsd1vjHSyBIX8b9CXO2pE2CMisSbDytenUoJn12LLaUssOCj3DEGgqN2emLozOIm27hpAL29kHw9f6oeSW7SnsGaTQ%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU52N7AGEO%2F20240901%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240901T021145Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=36fc9a46100bb87bd6f27b410a115f4cb3f9d8b1fd8fdb5a0403a4aaab5444fb) |
カテゴリ |
いちじく
|