タイトル |
県産ホウレンソウの栽培時期別及び栽培方法別の品質 |
担当機関 |
千葉県農業試験場 |
研究期間 |
1999~2000 |
研究担当者 |
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発行年度 |
2000 |
要約 |
県産ホウレンソウは栽培時期や栽培方法によって生育日数、糖及びビタミンC含量が大きく異なる。硝酸含量は、露地、トンネル、ハウス、水耕栽培の順に多くなる傾向にあるが、葉色との関係は認められない。
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背景・ねらい |
周年供給される県産のホウレンソウについて、外観、内容成分、商品性保持期間などの正確な情報を得る。科学的な品質情報が伝えられることにより、県産野菜のイメージアップを図るとともに、高品質野菜生産への一助とする。
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成果の内容・特徴 |
- 県内で生産・出荷される、露地、トンネル、ハウス、水耕の4栽培型、5月、8月、12月、3月収穫の4作型の計61点(14品種)のホウレンソウの生育期間(播種してから収穫までに要した日数)及び品質を調査した。
- 栽培時期や栽培方法によって、ホウレンソウの生育期間は21~ 140日と差がある。栽培時期による生育期間の差は水耕栽培では小さく、露地栽培では大きい。
- 成分含有量は、糖では0.01~1.52g/100gFW、ビタミンCでは3~81mg/100gFWと大きな差があり、生育期間とこれらの含有量との間には、生育の停滞する厳冬期の期間を除けば、正の相関(ビタミンC:r=0.78**、糖:r=0.73**)がある(図1、図2)。
- 硝酸含量にも800~7,300ppm(新鮮重当たり)の差があり、61点の平均は 3,300ppmである。硝酸含量は露地、トンネル栽培では少なく、ハウス、水耕栽培で多い傾向が見られる(図3)。
- ホウレンソウの硝酸含量と最大葉の葉色(色彩色差計による測色値:L*・|b*|/a*)の間には有意な関係がない(図4)。
- 品質に及ぼす品種の影響は、栽培時期や栽培方法による違いと比べて小さい。
- 10℃下に放置したときの商品性保持期間は2~12日間と差があり、平均では 6.5日間である。栽培期間中に泥はね等の影響の少ないハウスや水耕栽培では、内容成分は少ないにもかかわらず商品性保持期間が長い傾向にある(図5)。
- ホウレンソウの価格は内容成分の多少よりも商品性保持期間などに影響されている(図6)。
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成果の活用面・留意点 |
- 品質解析結果を普及情報などとして生産者や消費者に周知する。
- 栽培時期・方法別の硝酸含量の結果を低硝酸化栽培技術の開発に応用する。
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図表1 |
![216446-1.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/216446-1.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgKedve%2FYB54CGc%2BpKXBeRnUQJwn%2Fi%2B1pLY2c%2BQpgPiRgCIFTMOg%2FLbO9w4jgfBsdng1MqzqAPL5TBX%2FjHlzbZDEBXKpkECKT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgwpLIjOPaGjF%2FihB5Mq7QPoFTbz4xrDdl2t6OoXTSCD3htrRJ4sxE0gE%2BIzoVzbUtEHOofjWC4FCGiAEwYIaEB8DJ0XS8MjXcSwzGezF%2BGmvqfzH10WQy0DyEaTGEdksNmzvSHR14tigorMs6kmgYpG02Ta6a1mSsZVEX4RFfgJhzaD5ZqMjBXFBod0FWnVlQN7KBmoQrQE2JSH46AZVK7konA7FcH%2FRkyvRayWb%2FRnctvx1qXz6hw3isstlcj%2FuhuDAPf1oAngkJzS73OwYxBrnS7JdKsMErf%2F8fUrBgSVG77l1fkru1jVf9NJQ%2Fd64V%2F1J3Js8BjTi33RipZFT6zkhW0F1HEScrjgQanjoDfdiy%2BIVZq%2FJ%2Bsu7aupHwBvQGGQ9%2Bd4ru34FESbVxxy8TuHLiwGSNbZrPyPzO0ojdbtHmARMTeaEk%2Bx1m%2F1lq0CY0M4h31EptZBVzdHQZhixvwS97jir40zHg3qDX0mAsnd1TH5gD4AuslVs3LOFjcFmwXyMZ9IvqMbVAUKJb9mh9KN%2FkPN96OYYWOVmADWFwaMmfqHFbGQmA%2Fz%2BsskIRMGrCX1%2BRC11mOnTJqEOWUci55Rj6S4gMOXsr1sg%2FBQY59ctC8AcV%2Bs8q4ctanyf4%2FJ0euw%2BnhqbUfAYAOmBL38hTa5rX4Y82O8z9jPQjX%2FMJzIsLMGOqcBr84rAf7%2Fp%2BNangLz0cQHpAVJQnu0Hp9ev3adpJcRvrD%2FbQWf03OwxzkCxSlo6l1M9eXkgHt%2FUOztpglacLelrh5c2luhcGIzSCzSHCq4dRO4t2rcUSi16%2B8hoKlfa0J5Vw1eHjV3MpI6NaKsUcL4xMRxWuE%2Fzl4aePyUDI%2FftUw%2FQE79avX30DQEq2w1U8qG0U6TCzyZktZb%2B5JDY1%2BYNbipxdXxF1s%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU4WG3BIOS%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T111735Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=0f1902ec2a3fe3c0d0e3fca66a11dd605f48f92c313d28b94cc0aaa169ba9734) |
図表2 |
![216446-2.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/216446-2.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgKedve%2FYB54CGc%2BpKXBeRnUQJwn%2Fi%2B1pLY2c%2BQpgPiRgCIFTMOg%2FLbO9w4jgfBsdng1MqzqAPL5TBX%2FjHlzbZDEBXKpkECKT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgwpLIjOPaGjF%2FihB5Mq7QPoFTbz4xrDdl2t6OoXTSCD3htrRJ4sxE0gE%2BIzoVzbUtEHOofjWC4FCGiAEwYIaEB8DJ0XS8MjXcSwzGezF%2BGmvqfzH10WQy0DyEaTGEdksNmzvSHR14tigorMs6kmgYpG02Ta6a1mSsZVEX4RFfgJhzaD5ZqMjBXFBod0FWnVlQN7KBmoQrQE2JSH46AZVK7konA7FcH%2FRkyvRayWb%2FRnctvx1qXz6hw3isstlcj%2FuhuDAPf1oAngkJzS73OwYxBrnS7JdKsMErf%2F8fUrBgSVG77l1fkru1jVf9NJQ%2Fd64V%2F1J3Js8BjTi33RipZFT6zkhW0F1HEScrjgQanjoDfdiy%2BIVZq%2FJ%2Bsu7aupHwBvQGGQ9%2Bd4ru34FESbVxxy8TuHLiwGSNbZrPyPzO0ojdbtHmARMTeaEk%2Bx1m%2F1lq0CY0M4h31EptZBVzdHQZhixvwS97jir40zHg3qDX0mAsnd1TH5gD4AuslVs3LOFjcFmwXyMZ9IvqMbVAUKJb9mh9KN%2FkPN96OYYWOVmADWFwaMmfqHFbGQmA%2Fz%2BsskIRMGrCX1%2BRC11mOnTJqEOWUci55Rj6S4gMOXsr1sg%2FBQY59ctC8AcV%2Bs8q4ctanyf4%2FJ0euw%2BnhqbUfAYAOmBL38hTa5rX4Y82O8z9jPQjX%2FMJzIsLMGOqcBr84rAf7%2Fp%2BNangLz0cQHpAVJQnu0Hp9ev3adpJcRvrD%2FbQWf03OwxzkCxSlo6l1M9eXkgHt%2FUOztpglacLelrh5c2luhcGIzSCzSHCq4dRO4t2rcUSi16%2B8hoKlfa0J5Vw1eHjV3MpI6NaKsUcL4xMRxWuE%2Fzl4aePyUDI%2FftUw%2FQE79avX30DQEq2w1U8qG0U6TCzyZktZb%2B5JDY1%2BYNbipxdXxF1s%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU4WG3BIOS%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T111735Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=a60451f3f06a56c50078978882e93c897bc094108b06f1424d1f0e94588167d4) |
図表3 |
![216446-3.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/216446-3.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgKedve%2FYB54CGc%2BpKXBeRnUQJwn%2Fi%2B1pLY2c%2BQpgPiRgCIFTMOg%2FLbO9w4jgfBsdng1MqzqAPL5TBX%2FjHlzbZDEBXKpkECKT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgwpLIjOPaGjF%2FihB5Mq7QPoFTbz4xrDdl2t6OoXTSCD3htrRJ4sxE0gE%2BIzoVzbUtEHOofjWC4FCGiAEwYIaEB8DJ0XS8MjXcSwzGezF%2BGmvqfzH10WQy0DyEaTGEdksNmzvSHR14tigorMs6kmgYpG02Ta6a1mSsZVEX4RFfgJhzaD5ZqMjBXFBod0FWnVlQN7KBmoQrQE2JSH46AZVK7konA7FcH%2FRkyvRayWb%2FRnctvx1qXz6hw3isstlcj%2FuhuDAPf1oAngkJzS73OwYxBrnS7JdKsMErf%2F8fUrBgSVG77l1fkru1jVf9NJQ%2Fd64V%2F1J3Js8BjTi33RipZFT6zkhW0F1HEScrjgQanjoDfdiy%2BIVZq%2FJ%2Bsu7aupHwBvQGGQ9%2Bd4ru34FESbVxxy8TuHLiwGSNbZrPyPzO0ojdbtHmARMTeaEk%2Bx1m%2F1lq0CY0M4h31EptZBVzdHQZhixvwS97jir40zHg3qDX0mAsnd1TH5gD4AuslVs3LOFjcFmwXyMZ9IvqMbVAUKJb9mh9KN%2FkPN96OYYWOVmADWFwaMmfqHFbGQmA%2Fz%2BsskIRMGrCX1%2BRC11mOnTJqEOWUci55Rj6S4gMOXsr1sg%2FBQY59ctC8AcV%2Bs8q4ctanyf4%2FJ0euw%2BnhqbUfAYAOmBL38hTa5rX4Y82O8z9jPQjX%2FMJzIsLMGOqcBr84rAf7%2Fp%2BNangLz0cQHpAVJQnu0Hp9ev3adpJcRvrD%2FbQWf03OwxzkCxSlo6l1M9eXkgHt%2FUOztpglacLelrh5c2luhcGIzSCzSHCq4dRO4t2rcUSi16%2B8hoKlfa0J5Vw1eHjV3MpI6NaKsUcL4xMRxWuE%2Fzl4aePyUDI%2FftUw%2FQE79avX30DQEq2w1U8qG0U6TCzyZktZb%2B5JDY1%2BYNbipxdXxF1s%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU4WG3BIOS%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T111735Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=c8e7558da6046b950357c4844ff9c4c46782f15a0bda36822b7a5fb6a42b5ff2) |
図表4 |
![216446-4.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/216446-4.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgKedve%2FYB54CGc%2BpKXBeRnUQJwn%2Fi%2B1pLY2c%2BQpgPiRgCIFTMOg%2FLbO9w4jgfBsdng1MqzqAPL5TBX%2FjHlzbZDEBXKpkECKT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgwpLIjOPaGjF%2FihB5Mq7QPoFTbz4xrDdl2t6OoXTSCD3htrRJ4sxE0gE%2BIzoVzbUtEHOofjWC4FCGiAEwYIaEB8DJ0XS8MjXcSwzGezF%2BGmvqfzH10WQy0DyEaTGEdksNmzvSHR14tigorMs6kmgYpG02Ta6a1mSsZVEX4RFfgJhzaD5ZqMjBXFBod0FWnVlQN7KBmoQrQE2JSH46AZVK7konA7FcH%2FRkyvRayWb%2FRnctvx1qXz6hw3isstlcj%2FuhuDAPf1oAngkJzS73OwYxBrnS7JdKsMErf%2F8fUrBgSVG77l1fkru1jVf9NJQ%2Fd64V%2F1J3Js8BjTi33RipZFT6zkhW0F1HEScrjgQanjoDfdiy%2BIVZq%2FJ%2Bsu7aupHwBvQGGQ9%2Bd4ru34FESbVxxy8TuHLiwGSNbZrPyPzO0ojdbtHmARMTeaEk%2Bx1m%2F1lq0CY0M4h31EptZBVzdHQZhixvwS97jir40zHg3qDX0mAsnd1TH5gD4AuslVs3LOFjcFmwXyMZ9IvqMbVAUKJb9mh9KN%2FkPN96OYYWOVmADWFwaMmfqHFbGQmA%2Fz%2BsskIRMGrCX1%2BRC11mOnTJqEOWUci55Rj6S4gMOXsr1sg%2FBQY59ctC8AcV%2Bs8q4ctanyf4%2FJ0euw%2BnhqbUfAYAOmBL38hTa5rX4Y82O8z9jPQjX%2FMJzIsLMGOqcBr84rAf7%2Fp%2BNangLz0cQHpAVJQnu0Hp9ev3adpJcRvrD%2FbQWf03OwxzkCxSlo6l1M9eXkgHt%2FUOztpglacLelrh5c2luhcGIzSCzSHCq4dRO4t2rcUSi16%2B8hoKlfa0J5Vw1eHjV3MpI6NaKsUcL4xMRxWuE%2Fzl4aePyUDI%2FftUw%2FQE79avX30DQEq2w1U8qG0U6TCzyZktZb%2B5JDY1%2BYNbipxdXxF1s%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU4WG3BIOS%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T111735Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=7c5f1266de98e343fd3fe60f890a3393bfbf8b9ce9fd65984cc9adb334e45b27) |
図表5 |
![216446-5.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/216446-5.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgKedve%2FYB54CGc%2BpKXBeRnUQJwn%2Fi%2B1pLY2c%2BQpgPiRgCIFTMOg%2FLbO9w4jgfBsdng1MqzqAPL5TBX%2FjHlzbZDEBXKpkECKT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgwpLIjOPaGjF%2FihB5Mq7QPoFTbz4xrDdl2t6OoXTSCD3htrRJ4sxE0gE%2BIzoVzbUtEHOofjWC4FCGiAEwYIaEB8DJ0XS8MjXcSwzGezF%2BGmvqfzH10WQy0DyEaTGEdksNmzvSHR14tigorMs6kmgYpG02Ta6a1mSsZVEX4RFfgJhzaD5ZqMjBXFBod0FWnVlQN7KBmoQrQE2JSH46AZVK7konA7FcH%2FRkyvRayWb%2FRnctvx1qXz6hw3isstlcj%2FuhuDAPf1oAngkJzS73OwYxBrnS7JdKsMErf%2F8fUrBgSVG77l1fkru1jVf9NJQ%2Fd64V%2F1J3Js8BjTi33RipZFT6zkhW0F1HEScrjgQanjoDfdiy%2BIVZq%2FJ%2Bsu7aupHwBvQGGQ9%2Bd4ru34FESbVxxy8TuHLiwGSNbZrPyPzO0ojdbtHmARMTeaEk%2Bx1m%2F1lq0CY0M4h31EptZBVzdHQZhixvwS97jir40zHg3qDX0mAsnd1TH5gD4AuslVs3LOFjcFmwXyMZ9IvqMbVAUKJb9mh9KN%2FkPN96OYYWOVmADWFwaMmfqHFbGQmA%2Fz%2BsskIRMGrCX1%2BRC11mOnTJqEOWUci55Rj6S4gMOXsr1sg%2FBQY59ctC8AcV%2Bs8q4ctanyf4%2FJ0euw%2BnhqbUfAYAOmBL38hTa5rX4Y82O8z9jPQjX%2FMJzIsLMGOqcBr84rAf7%2Fp%2BNangLz0cQHpAVJQnu0Hp9ev3adpJcRvrD%2FbQWf03OwxzkCxSlo6l1M9eXkgHt%2FUOztpglacLelrh5c2luhcGIzSCzSHCq4dRO4t2rcUSi16%2B8hoKlfa0J5Vw1eHjV3MpI6NaKsUcL4xMRxWuE%2Fzl4aePyUDI%2FftUw%2FQE79avX30DQEq2w1U8qG0U6TCzyZktZb%2B5JDY1%2BYNbipxdXxF1s%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU4WG3BIOS%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T111735Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=970e0159488cca11e4f08d0206c7a22c4a1f27b9bdbc08755f44bbe4ae01f3b8) |
図表6 |
![216446-6.gif](https://s3-agre-content.s3.ap-northeast-1.amazonaws.com/assets/images/seika_chart/216446-6.gif?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEAsaDmFwLW5vcnRoZWFzdC0xIkYwRAIgKedve%2FYB54CGc%2BpKXBeRnUQJwn%2Fi%2B1pLY2c%2BQpgPiRgCIFTMOg%2FLbO9w4jgfBsdng1MqzqAPL5TBX%2FjHlzbZDEBXKpkECKT%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEQAhoMNTMyMzMxMDcyMDQxIgwpLIjOPaGjF%2FihB5Mq7QPoFTbz4xrDdl2t6OoXTSCD3htrRJ4sxE0gE%2BIzoVzbUtEHOofjWC4FCGiAEwYIaEB8DJ0XS8MjXcSwzGezF%2BGmvqfzH10WQy0DyEaTGEdksNmzvSHR14tigorMs6kmgYpG02Ta6a1mSsZVEX4RFfgJhzaD5ZqMjBXFBod0FWnVlQN7KBmoQrQE2JSH46AZVK7konA7FcH%2FRkyvRayWb%2FRnctvx1qXz6hw3isstlcj%2FuhuDAPf1oAngkJzS73OwYxBrnS7JdKsMErf%2F8fUrBgSVG77l1fkru1jVf9NJQ%2Fd64V%2F1J3Js8BjTi33RipZFT6zkhW0F1HEScrjgQanjoDfdiy%2BIVZq%2FJ%2Bsu7aupHwBvQGGQ9%2Bd4ru34FESbVxxy8TuHLiwGSNbZrPyPzO0ojdbtHmARMTeaEk%2Bx1m%2F1lq0CY0M4h31EptZBVzdHQZhixvwS97jir40zHg3qDX0mAsnd1TH5gD4AuslVs3LOFjcFmwXyMZ9IvqMbVAUKJb9mh9KN%2FkPN96OYYWOVmADWFwaMmfqHFbGQmA%2Fz%2BsskIRMGrCX1%2BRC11mOnTJqEOWUci55Rj6S4gMOXsr1sg%2FBQY59ctC8AcV%2Bs8q4ctanyf4%2FJ0euw%2BnhqbUfAYAOmBL38hTa5rX4Y82O8z9jPQjX%2FMJzIsLMGOqcBr84rAf7%2Fp%2BNangLz0cQHpAVJQnu0Hp9ev3adpJcRvrD%2FbQWf03OwxzkCxSlo6l1M9eXkgHt%2FUOztpglacLelrh5c2luhcGIzSCzSHCq4dRO4t2rcUSi16%2B8hoKlfa0J5Vw1eHjV3MpI6NaKsUcL4xMRxWuE%2Fzl4aePyUDI%2FftUw%2FQE79avX30DQEq2w1U8qG0U6TCzyZktZb%2B5JDY1%2BYNbipxdXxF1s%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIAXX4LHRIU4WG3BIOS%2F20240614%2Fap-northeast-1%2Fs3%2Faws4_request&X-Amz-Date=20240614T111735Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1800&X-Amz-Signature=bae1dc9859db93d13ef3abcb33509c00ada720047a8f6400ab720cc147fe8469) |
カテゴリ |
栽培技術
出荷調整
水耕栽培
播種
品種
ほうれんそう
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