タイトル |
水田乗用管理機の圃場内走行性判定法 |
担当機関 |
山形県立農業試験場 |
研究期間 |
1999~2000 |
研究担当者 |
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発行年度 |
1999 |
要約 |
湛水条件下の圃場コーン指数(CI:地耐力)を非灌漑期の実測耕盤層のコーン指数から「非灌漑期の実測値-0.2MPa」として事前に推定する。水田乗用管理機の限界コーン指数(CI')をWES簡易法より算定し、耕盤から10cm以内に計算CI'より大きいCIを示す層が厚さ20cm以上連続してある場合は、管理機が安定して走行できると判断する。
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背景・ねらい |
大区画水田等では乗用管理機を組込んだ機械化体系が期待されるが、車輪幅が 小さいので軟弱な圃場では走行できないこともある。立毛・湛水条件下の地耐力を 非灌漑期の耕盤層のコーン指数から推定し、水田乗用管理機の走行性を事前に 判定する手法を確立する。
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成果の内容・特徴 |
- 乗用管理機が走行する立毛・湛水条件下の圃場コーン指数(CI:地耐力)を実測
できない場合、非灌漑期に実測した耕盤層のコーン指数から「非灌漑期の 実測値-0.2MPa」として推定する(図1)。
- 水田乗用管理機の限界コーン指数(CI')をWES簡易法より算定し、耕盤から
下方10cm以内に計算CI'より大きい圃場コーン指数(CI)を示す層が厚さ20cm以上 連続してある場合は、水田乗用管理機が安定して走行できると判断する。 また、車輪はCI≧CI'の層まで沈下する(表1、 図2、3)。 <WES簡易法によるCI'の計算式> CI'(MPa)=(0.071125×VCI-0.0388)×0.0981 VCI:車両コーン指数 VCI={7.37×10-4×W/(B2×R×n)}+33.7 W:機体総重量(kg)、B:タイヤ幅(m)、R:リム直径(m)、n:駆動輪タイヤ数 計算例:M社乗用管理機:W=954kg,B=0.0762m,R=0.711m,n=4 よってCI'=0.53MPa K社栽培管理ビークル:W=1014kg,B=0.12m,R=0.9m,n=4 よってCI'0.33MPa
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成果の活用面・留意点 |
- CICI'の場合は車両コーン指数(VCI)の小さい車輪、機種を選定する。
- 沈下量と機械最低地上高および水稲の草丈から、押し倒し量を検討しておく。
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図表1 |
![231441-1.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/231441-1.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgec2%2FIjcdLGjM%2B2Epi8UQjEdfhrqwrm2o7Vf20Bn4TFUCICs%2BGJPrQn5KmkQe%2BmZN84uWs12vodCDZMFoRnlsnaEbKpkECLT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgxKHynhKxFn6T84M5Mq7QO8q2p9IEbECRU%2FwRpvJyf8%2BqlCWpNHBCz1sgLL9voQlh5Hsv8naNFvKEh9dj18j%2FHP%2BfABx0CSeyZzJbzMoFXBV8V1lZ21vTknK8h%2BY2Uzq%2FlwwGsQJAh08gXEv3KI97zuBje0KsOjgWYmaoEUk5FpzbffX5aNObQa98%2FO2FSSaCqIcy%2Bi5HenwVJ7YHN5eAMAmF%2F60WYmiFsd1o6rmRv84XBH0%2FOhC54YwYXwwOEmrQD6lfUamsn39z1uFqeZIZFEz2PPhZBl8nzai7SrJLnoh77wtkRZGDdSytX2Pp6hcsaWtEYPOgcpufGN%2B0TdMEauWGd3G6MWami0J80gjfIxO9fNQD%2B66sMT59pzRaRjqs79oKDeLIyzZFV7rgmRCOmHWnkhUH36Skr0xxAHDCP5riCAJvMw9F4RIKvkiB%2BLSA1KZGV0YD6kmbUmmRhYfW2pxOpBCILuS69bpYmGDsqC35ZQsH5sHGRDtXU2%2BhC7wVzM815HCUiLH3XtXIQnZYLkXgf69iMXUP3OJj88LADqXzXBdPRKwaQuFZGPxl6zaobHgxczdVGKz%2BBpDLtOeQQ2Ibfi0QDiCh16y0DE%2BCngyXRYVY3zH46N0Nkz2y8c7gPsFwL%2BB6H3UKLop7yqNGT%2FfrkxnKAE7ITYXKsoMOOItLMGOqcBJB1KsVqf%2BWYN2%2BDjKBMzMsrp3rTNb1T7tsZlA1Kk6pZdK2uNAgmgMyktT%2FmF02vjC%2F32lZhH49CwY3xbgNqen3kjJRcaT3ErAYA8xdL92ZNHquMxEEfAkqXjgHjMIIVV1bu%2B11zTIzQI%2ByCuYR5pCDEqwJe%2FXu4lEIfLcqg2Nv0qSYcNwFY8unecAsnPRb5gkP5dlFOQIhCJaZJPnMlzsnIkZ%2F0rkWs%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU5WUTDUSP%2F20240615%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240615T032820Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=bf5ef97e0c57acce60ec91f7803229d9ac9ce90987ba04fb126e78789ad9fe7b) |
図表2 |
![231441-2.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/231441-2.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgec2%2FIjcdLGjM%2B2Epi8UQjEdfhrqwrm2o7Vf20Bn4TFUCICs%2BGJPrQn5KmkQe%2BmZN84uWs12vodCDZMFoRnlsnaEbKpkECLT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgxKHynhKxFn6T84M5Mq7QO8q2p9IEbECRU%2FwRpvJyf8%2BqlCWpNHBCz1sgLL9voQlh5Hsv8naNFvKEh9dj18j%2FHP%2BfABx0CSeyZzJbzMoFXBV8V1lZ21vTknK8h%2BY2Uzq%2FlwwGsQJAh08gXEv3KI97zuBje0KsOjgWYmaoEUk5FpzbffX5aNObQa98%2FO2FSSaCqIcy%2Bi5HenwVJ7YHN5eAMAmF%2F60WYmiFsd1o6rmRv84XBH0%2FOhC54YwYXwwOEmrQD6lfUamsn39z1uFqeZIZFEz2PPhZBl8nzai7SrJLnoh77wtkRZGDdSytX2Pp6hcsaWtEYPOgcpufGN%2B0TdMEauWGd3G6MWami0J80gjfIxO9fNQD%2B66sMT59pzRaRjqs79oKDeLIyzZFV7rgmRCOmHWnkhUH36Skr0xxAHDCP5riCAJvMw9F4RIKvkiB%2BLSA1KZGV0YD6kmbUmmRhYfW2pxOpBCILuS69bpYmGDsqC35ZQsH5sHGRDtXU2%2BhC7wVzM815HCUiLH3XtXIQnZYLkXgf69iMXUP3OJj88LADqXzXBdPRKwaQuFZGPxl6zaobHgxczdVGKz%2BBpDLtOeQQ2Ibfi0QDiCh16y0DE%2BCngyXRYVY3zH46N0Nkz2y8c7gPsFwL%2BB6H3UKLop7yqNGT%2FfrkxnKAE7ITYXKsoMOOItLMGOqcBJB1KsVqf%2BWYN2%2BDjKBMzMsrp3rTNb1T7tsZlA1Kk6pZdK2uNAgmgMyktT%2FmF02vjC%2F32lZhH49CwY3xbgNqen3kjJRcaT3ErAYA8xdL92ZNHquMxEEfAkqXjgHjMIIVV1bu%2B11zTIzQI%2ByCuYR5pCDEqwJe%2FXu4lEIfLcqg2Nv0qSYcNwFY8unecAsnPRb5gkP5dlFOQIhCJaZJPnMlzsnIkZ%2F0rkWs%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU5WUTDUSP%2F20240615%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240615T032820Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=1c2bbb8280bd29780e93e5a5bdbf7685d1962b9f841fe143fc718e221915be63) |
図表3 |
![231441-3.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/231441-3.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgec2%2FIjcdLGjM%2B2Epi8UQjEdfhrqwrm2o7Vf20Bn4TFUCICs%2BGJPrQn5KmkQe%2BmZN84uWs12vodCDZMFoRnlsnaEbKpkECLT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgxKHynhKxFn6T84M5Mq7QO8q2p9IEbECRU%2FwRpvJyf8%2BqlCWpNHBCz1sgLL9voQlh5Hsv8naNFvKEh9dj18j%2FHP%2BfABx0CSeyZzJbzMoFXBV8V1lZ21vTknK8h%2BY2Uzq%2FlwwGsQJAh08gXEv3KI97zuBje0KsOjgWYmaoEUk5FpzbffX5aNObQa98%2FO2FSSaCqIcy%2Bi5HenwVJ7YHN5eAMAmF%2F60WYmiFsd1o6rmRv84XBH0%2FOhC54YwYXwwOEmrQD6lfUamsn39z1uFqeZIZFEz2PPhZBl8nzai7SrJLnoh77wtkRZGDdSytX2Pp6hcsaWtEYPOgcpufGN%2B0TdMEauWGd3G6MWami0J80gjfIxO9fNQD%2B66sMT59pzRaRjqs79oKDeLIyzZFV7rgmRCOmHWnkhUH36Skr0xxAHDCP5riCAJvMw9F4RIKvkiB%2BLSA1KZGV0YD6kmbUmmRhYfW2pxOpBCILuS69bpYmGDsqC35ZQsH5sHGRDtXU2%2BhC7wVzM815HCUiLH3XtXIQnZYLkXgf69iMXUP3OJj88LADqXzXBdPRKwaQuFZGPxl6zaobHgxczdVGKz%2BBpDLtOeQQ2Ibfi0QDiCh16y0DE%2BCngyXRYVY3zH46N0Nkz2y8c7gPsFwL%2BB6H3UKLop7yqNGT%2FfrkxnKAE7ITYXKsoMOOItLMGOqcBJB1KsVqf%2BWYN2%2BDjKBMzMsrp3rTNb1T7tsZlA1Kk6pZdK2uNAgmgMyktT%2FmF02vjC%2F32lZhH49CwY3xbgNqen3kjJRcaT3ErAYA8xdL92ZNHquMxEEfAkqXjgHjMIIVV1bu%2B11zTIzQI%2ByCuYR5pCDEqwJe%2FXu4lEIfLcqg2Nv0qSYcNwFY8unecAsnPRb5gkP5dlFOQIhCJaZJPnMlzsnIkZ%2F0rkWs%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU5WUTDUSP%2F20240615%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240615T032820Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=0adfa9de225431f6232be023b7a71008e7045c95ffcb6946d28256a1ff54fd41) |
図表4 |
![231441-4.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/231441-4.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEBsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgec2%2FIjcdLGjM%2B2Epi8UQjEdfhrqwrm2o7Vf20Bn4TFUCICs%2BGJPrQn5KmkQe%2BmZN84uWs12vodCDZMFoRnlsnaEbKpkECLT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgxKHynhKxFn6T84M5Mq7QO8q2p9IEbECRU%2FwRpvJyf8%2BqlCWpNHBCz1sgLL9voQlh5Hsv8naNFvKEh9dj18j%2FHP%2BfABx0CSeyZzJbzMoFXBV8V1lZ21vTknK8h%2BY2Uzq%2FlwwGsQJAh08gXEv3KI97zuBje0KsOjgWYmaoEUk5FpzbffX5aNObQa98%2FO2FSSaCqIcy%2Bi5HenwVJ7YHN5eAMAmF%2F60WYmiFsd1o6rmRv84XBH0%2FOhC54YwYXwwOEmrQD6lfUamsn39z1uFqeZIZFEz2PPhZBl8nzai7SrJLnoh77wtkRZGDdSytX2Pp6hcsaWtEYPOgcpufGN%2B0TdMEauWGd3G6MWami0J80gjfIxO9fNQD%2B66sMT59pzRaRjqs79oKDeLIyzZFV7rgmRCOmHWnkhUH36Skr0xxAHDCP5riCAJvMw9F4RIKvkiB%2BLSA1KZGV0YD6kmbUmmRhYfW2pxOpBCILuS69bpYmGDsqC35ZQsH5sHGRDtXU2%2BhC7wVzM815HCUiLH3XtXIQnZYLkXgf69iMXUP3OJj88LADqXzXBdPRKwaQuFZGPxl6zaobHgxczdVGKz%2BBpDLtOeQQ2Ibfi0QDiCh16y0DE%2BCngyXRYVY3zH46N0Nkz2y8c7gPsFwL%2BB6H3UKLop7yqNGT%2FfrkxnKAE7ITYXKsoMOOItLMGOqcBJB1KsVqf%2BWYN2%2BDjKBMzMsrp3rTNb1T7tsZlA1Kk6pZdK2uNAgmgMyktT%2FmF02vjC%2F32lZhH49CwY3xbgNqen3kjJRcaT3ErAYA8xdL92ZNHquMxEEfAkqXjgHjMIIVV1bu%2B11zTIzQI%2ByCuYR5pCDEqwJe%2FXu4lEIfLcqg2Nv0qSYcNwFY8unecAsnPRb5gkP5dlFOQIhCJaZJPnMlzsnIkZ%2F0rkWs%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU5WUTDUSP%2F20240615%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240615T032820Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=db23fdbfc155a01cdcb39538a04841cfc55d04f5add818bf02bf8abe10f80069) |
カテゴリ |
機械化体系
栽培技術
水田
水稲
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