タイトル |
肥効調節型肥料による露地ウンシュウミカンの年1回施肥法 |
担当機関 |
熊本農研セ |
研究期間 |
1996~2000 |
研究担当者 |
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発行年度 |
2001 |
要約 |
露地栽培のウンシュウミカン「白川」では、夏重点溶出型の肥効調節型肥料を用いた11月上旬の年1回施肥における収量及び果実品質は、有機配合肥料を用いた慣行の年3回施肥と同等で、施肥の省力化と窒素施用量の20~30%削減が可能となる。
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キーワード |
ウンシュウミカン、露地栽培、肥効調節型肥料、環境負荷低減、省力化
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背景・ねらい |
ウンシュウミカン栽培において、地下水の硝酸性窒素負荷や農業の担い手の高齢化等の問題に対応するため、収量、果実品質を確保しながら、環境負荷を軽減するとともに、省力的な施肥法の確立が必要である。そこで、ウンシュウミカンに対する最も合理的な施肥法を解明するため、溶出タイプを異にする肥効調節型肥料を用いて、収量、果実品質に及ぼす効果を調査し、年1回施肥法を確立する。
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成果の内容・特徴 |
- 収量は、肥効調節型肥料の7割量施用では年により傾向が異なるが、累計収量は対照区(累計収量指数100)、夏重点溶出型区(100)がやや多く、次いで均等溶出型区(94)、春秋重点溶出型区(92)の順である。春秋重点溶出型区は隔年結果の傾向が他の区より大きい(図1)。
- 果実の糖度は、夏重点溶出型の肥効調節型肥料7割量を施用した区は有機配合肥料の対照区より高い(図2)。
- 果皮の着色は、春秋重点溶出型の肥効調節型肥料7割量を施用した区が有機配合肥料の対照区より優れる傾向にある(図3)。
- 葉中窒素濃度の年次変化(9月)は、有機配合肥料の対照区で年次変化が大きく、1997年、1998年、1999年では夏重点溶出型の肥効調節型肥料7割量を施用した区が有機配合肥料の対照区より高い(図4)。
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成果の活用面・留意点 |
- 普通ウンシュウミカン栽培に適用する。
- 肥効調節型肥料は地温に窒素の溶出速度が強く影響されるので、11月上旬施用の時期を厳守する。施肥時期を逸した場合は、肥効調節型肥料ではなく有機配合肥料を施用する。
- 肥効調節型肥料施用の場合の土壌条件は問わないが、土壌が過乾のときは窒素の溶出やその根群域への浸透が遅れるおそれがあるので注意する。
- 肥効調節型肥料施用の場合の減肥割合は、堆きゅう肥の種類、施用量並びに土壌診断結果を考慮する。
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図表1 |
![221878-1.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/221878-1.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEJz%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDmFwLW5vcnRoZWFzdC0xIkYwRAIgexKtZIjL%2FjgMogO2RQNLobfUOvlzG%2BlHwPq2jUYxwHkCIFXm8qPfzcPwfa25%2BaY8bWoY8aMbNGIm8tn3xTPqJ0iMKpAECEUQAhoMNTMyMzMxMDcyMDQxIgxgmjxSHCFRjPH59XEq7QP8WyIHtDta%2BkQQmUv9P3fbHJvH%2B08dc%2F5Z1QJppkpwAaoRyZx7imlavfc1KJiyEnKnV4mrKV%2BGD5vviAXGa%2FSXZ%2FQFbgCpyHC9bMjj6apN2CHTerEYtUbtG9zW%2FmITJow3LAubJl%2FZ7AYqPMckDxmad8JdNcyw0WA1z1sSvcgJagbW%2Fc34svoO4EdgOg2J2ofptKgaTUFkpNIW60X7rDq%2F3o033giz9Q4qBlmLuTS8ga4b3Fl7VK9rMiZmVprSH88UaspGCNFziocrjO56rV4ve8rOvAeVsx6%2F0Fvwm2%2BJMAdB78VFUcNZYKgizyPMj1KiWEtyeDLXEsDYm7lK74es66CrLBWSaMHsKzYsH383bsI8r5nw%2BzERE4I6rJN5t1c2mrcXN6CORdhJ6KY0wYpwsz%2FMF5RWUkeNpFYjzdsE2w5lVMEA97TAPJHUotTGdO89GdroXL75%2FHIpukRVMT%2B5Zqk8Shar8dUVYFP2w5F7E8lLOUh2kt5kjRHFZ10tUU0lDO56vzjoT8CAC%2BxrYhj8%2Be6keZJYdwNrZDIYiGH4IiHqTCyFq%2FmO84N49TIZGY6nFnBBp9BAQ0CmDQNKgu0MJKRj%2FU85cjFKGlH5%2B7HqHRFvKwMioAKhLun%2Bc51G0obvPfaH5k7MKiI2NjsRMKG00LMGOqcBLP%2BQeZy%2FhNikX%2FOM7egw%2F%2Ft9IirOaeWWR6SESa5gRDuGpk7tz%2BkpfkJaSFQihZ6ArF4gY85uFXlhLcJCrXUYlxmvhYTCnYoYSWsbdcy6yfuO4W74g4DBTezU1lWtgFef%2BxdzWUnULFXLvtVlYEKer2osEne8pMUqlAZU8XWtVazFTL%2FhmmFHqawgEcVblWORe0st5ISJyWkC21zC3Lxk5VD5di4P0Mo%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUVFSMFSTM%2F20240620%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240620T120640Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=10aa44d90d80565efabed39b69df1feb7de00d6332b3e35d1eda1521d467b76c) |
図表2 |
![221878-2.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/221878-2.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEJz%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDmFwLW5vcnRoZWFzdC0xIkYwRAIgexKtZIjL%2FjgMogO2RQNLobfUOvlzG%2BlHwPq2jUYxwHkCIFXm8qPfzcPwfa25%2BaY8bWoY8aMbNGIm8tn3xTPqJ0iMKpAECEUQAhoMNTMyMzMxMDcyMDQxIgxgmjxSHCFRjPH59XEq7QP8WyIHtDta%2BkQQmUv9P3fbHJvH%2B08dc%2F5Z1QJppkpwAaoRyZx7imlavfc1KJiyEnKnV4mrKV%2BGD5vviAXGa%2FSXZ%2FQFbgCpyHC9bMjj6apN2CHTerEYtUbtG9zW%2FmITJow3LAubJl%2FZ7AYqPMckDxmad8JdNcyw0WA1z1sSvcgJagbW%2Fc34svoO4EdgOg2J2ofptKgaTUFkpNIW60X7rDq%2F3o033giz9Q4qBlmLuTS8ga4b3Fl7VK9rMiZmVprSH88UaspGCNFziocrjO56rV4ve8rOvAeVsx6%2F0Fvwm2%2BJMAdB78VFUcNZYKgizyPMj1KiWEtyeDLXEsDYm7lK74es66CrLBWSaMHsKzYsH383bsI8r5nw%2BzERE4I6rJN5t1c2mrcXN6CORdhJ6KY0wYpwsz%2FMF5RWUkeNpFYjzdsE2w5lVMEA97TAPJHUotTGdO89GdroXL75%2FHIpukRVMT%2B5Zqk8Shar8dUVYFP2w5F7E8lLOUh2kt5kjRHFZ10tUU0lDO56vzjoT8CAC%2BxrYhj8%2Be6keZJYdwNrZDIYiGH4IiHqTCyFq%2FmO84N49TIZGY6nFnBBp9BAQ0CmDQNKgu0MJKRj%2FU85cjFKGlH5%2B7HqHRFvKwMioAKhLun%2Bc51G0obvPfaH5k7MKiI2NjsRMKG00LMGOqcBLP%2BQeZy%2FhNikX%2FOM7egw%2F%2Ft9IirOaeWWR6SESa5gRDuGpk7tz%2BkpfkJaSFQihZ6ArF4gY85uFXlhLcJCrXUYlxmvhYTCnYoYSWsbdcy6yfuO4W74g4DBTezU1lWtgFef%2BxdzWUnULFXLvtVlYEKer2osEne8pMUqlAZU8XWtVazFTL%2FhmmFHqawgEcVblWORe0st5ISJyWkC21zC3Lxk5VD5di4P0Mo%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUVFSMFSTM%2F20240620%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240620T120640Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=7ed8bdfb0660419308d4ff697716f92ad7823c1a6e3c00731ca1713fe14a2607) |
図表3 |
![221878-3.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/221878-3.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEJz%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDmFwLW5vcnRoZWFzdC0xIkYwRAIgexKtZIjL%2FjgMogO2RQNLobfUOvlzG%2BlHwPq2jUYxwHkCIFXm8qPfzcPwfa25%2BaY8bWoY8aMbNGIm8tn3xTPqJ0iMKpAECEUQAhoMNTMyMzMxMDcyMDQxIgxgmjxSHCFRjPH59XEq7QP8WyIHtDta%2BkQQmUv9P3fbHJvH%2B08dc%2F5Z1QJppkpwAaoRyZx7imlavfc1KJiyEnKnV4mrKV%2BGD5vviAXGa%2FSXZ%2FQFbgCpyHC9bMjj6apN2CHTerEYtUbtG9zW%2FmITJow3LAubJl%2FZ7AYqPMckDxmad8JdNcyw0WA1z1sSvcgJagbW%2Fc34svoO4EdgOg2J2ofptKgaTUFkpNIW60X7rDq%2F3o033giz9Q4qBlmLuTS8ga4b3Fl7VK9rMiZmVprSH88UaspGCNFziocrjO56rV4ve8rOvAeVsx6%2F0Fvwm2%2BJMAdB78VFUcNZYKgizyPMj1KiWEtyeDLXEsDYm7lK74es66CrLBWSaMHsKzYsH383bsI8r5nw%2BzERE4I6rJN5t1c2mrcXN6CORdhJ6KY0wYpwsz%2FMF5RWUkeNpFYjzdsE2w5lVMEA97TAPJHUotTGdO89GdroXL75%2FHIpukRVMT%2B5Zqk8Shar8dUVYFP2w5F7E8lLOUh2kt5kjRHFZ10tUU0lDO56vzjoT8CAC%2BxrYhj8%2Be6keZJYdwNrZDIYiGH4IiHqTCyFq%2FmO84N49TIZGY6nFnBBp9BAQ0CmDQNKgu0MJKRj%2FU85cjFKGlH5%2B7HqHRFvKwMioAKhLun%2Bc51G0obvPfaH5k7MKiI2NjsRMKG00LMGOqcBLP%2BQeZy%2FhNikX%2FOM7egw%2F%2Ft9IirOaeWWR6SESa5gRDuGpk7tz%2BkpfkJaSFQihZ6ArF4gY85uFXlhLcJCrXUYlxmvhYTCnYoYSWsbdcy6yfuO4W74g4DBTezU1lWtgFef%2BxdzWUnULFXLvtVlYEKer2osEne8pMUqlAZU8XWtVazFTL%2FhmmFHqawgEcVblWORe0st5ISJyWkC21zC3Lxk5VD5di4P0Mo%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUVFSMFSTM%2F20240620%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240620T120640Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=62b2077bd40d2e022e9d00b9eb7da2df88c4b67a7c5cd7a4bbd32baf0c424d2f) |
図表4 |
![221878-4.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/221878-4.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEJz%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDmFwLW5vcnRoZWFzdC0xIkYwRAIgexKtZIjL%2FjgMogO2RQNLobfUOvlzG%2BlHwPq2jUYxwHkCIFXm8qPfzcPwfa25%2BaY8bWoY8aMbNGIm8tn3xTPqJ0iMKpAECEUQAhoMNTMyMzMxMDcyMDQxIgxgmjxSHCFRjPH59XEq7QP8WyIHtDta%2BkQQmUv9P3fbHJvH%2B08dc%2F5Z1QJppkpwAaoRyZx7imlavfc1KJiyEnKnV4mrKV%2BGD5vviAXGa%2FSXZ%2FQFbgCpyHC9bMjj6apN2CHTerEYtUbtG9zW%2FmITJow3LAubJl%2FZ7AYqPMckDxmad8JdNcyw0WA1z1sSvcgJagbW%2Fc34svoO4EdgOg2J2ofptKgaTUFkpNIW60X7rDq%2F3o033giz9Q4qBlmLuTS8ga4b3Fl7VK9rMiZmVprSH88UaspGCNFziocrjO56rV4ve8rOvAeVsx6%2F0Fvwm2%2BJMAdB78VFUcNZYKgizyPMj1KiWEtyeDLXEsDYm7lK74es66CrLBWSaMHsKzYsH383bsI8r5nw%2BzERE4I6rJN5t1c2mrcXN6CORdhJ6KY0wYpwsz%2FMF5RWUkeNpFYjzdsE2w5lVMEA97TAPJHUotTGdO89GdroXL75%2FHIpukRVMT%2B5Zqk8Shar8dUVYFP2w5F7E8lLOUh2kt5kjRHFZ10tUU0lDO56vzjoT8CAC%2BxrYhj8%2Be6keZJYdwNrZDIYiGH4IiHqTCyFq%2FmO84N49TIZGY6nFnBBp9BAQ0CmDQNKgu0MJKRj%2FU85cjFKGlH5%2B7HqHRFvKwMioAKhLun%2Bc51G0obvPfaH5k7MKiI2NjsRMKG00LMGOqcBLP%2BQeZy%2FhNikX%2FOM7egw%2F%2Ft9IirOaeWWR6SESa5gRDuGpk7tz%2BkpfkJaSFQihZ6ArF4gY85uFXlhLcJCrXUYlxmvhYTCnYoYSWsbdcy6yfuO4W74g4DBTezU1lWtgFef%2BxdzWUnULFXLvtVlYEKer2osEne8pMUqlAZU8XWtVazFTL%2FhmmFHqawgEcVblWORe0st5ISJyWkC21zC3Lxk5VD5di4P0Mo%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUVFSMFSTM%2F20240620%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240620T120640Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=332db425944f710a59e9b2a55de63c3075f23622df35246dcee419f70eaf3987) |
図表5 |
![221878-5.jpg](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/221878-5.jpg?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEJz%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDmFwLW5vcnRoZWFzdC0xIkYwRAIgexKtZIjL%2FjgMogO2RQNLobfUOvlzG%2BlHwPq2jUYxwHkCIFXm8qPfzcPwfa25%2BaY8bWoY8aMbNGIm8tn3xTPqJ0iMKpAECEUQAhoMNTMyMzMxMDcyMDQxIgxgmjxSHCFRjPH59XEq7QP8WyIHtDta%2BkQQmUv9P3fbHJvH%2B08dc%2F5Z1QJppkpwAaoRyZx7imlavfc1KJiyEnKnV4mrKV%2BGD5vviAXGa%2FSXZ%2FQFbgCpyHC9bMjj6apN2CHTerEYtUbtG9zW%2FmITJow3LAubJl%2FZ7AYqPMckDxmad8JdNcyw0WA1z1sSvcgJagbW%2Fc34svoO4EdgOg2J2ofptKgaTUFkpNIW60X7rDq%2F3o033giz9Q4qBlmLuTS8ga4b3Fl7VK9rMiZmVprSH88UaspGCNFziocrjO56rV4ve8rOvAeVsx6%2F0Fvwm2%2BJMAdB78VFUcNZYKgizyPMj1KiWEtyeDLXEsDYm7lK74es66CrLBWSaMHsKzYsH383bsI8r5nw%2BzERE4I6rJN5t1c2mrcXN6CORdhJ6KY0wYpwsz%2FMF5RWUkeNpFYjzdsE2w5lVMEA97TAPJHUotTGdO89GdroXL75%2FHIpukRVMT%2B5Zqk8Shar8dUVYFP2w5F7E8lLOUh2kt5kjRHFZ10tUU0lDO56vzjoT8CAC%2BxrYhj8%2Be6keZJYdwNrZDIYiGH4IiHqTCyFq%2FmO84N49TIZGY6nFnBBp9BAQ0CmDQNKgu0MJKRj%2FU85cjFKGlH5%2B7HqHRFvKwMioAKhLun%2Bc51G0obvPfaH5k7MKiI2NjsRMKG00LMGOqcBLP%2BQeZy%2FhNikX%2FOM7egw%2F%2Ft9IirOaeWWR6SESa5gRDuGpk7tz%2BkpfkJaSFQihZ6ArF4gY85uFXlhLcJCrXUYlxmvhYTCnYoYSWsbdcy6yfuO4W74g4DBTezU1lWtgFef%2BxdzWUnULFXLvtVlYEKer2osEne8pMUqlAZU8XWtVazFTL%2FhmmFHqawgEcVblWORe0st5ISJyWkC21zC3Lxk5VD5di4P0Mo%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIUVFSMFSTM%2F20240620%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240620T120640Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=c4dfa2f50aac07ab9bdfc3e6b6d15c99dab35622a54ce7bd8d1b7f48f5ff8366) |
カテゴリ |
肥料
温州みかん
環境負荷低減
省力化
施肥
土壌診断
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