キリンソウと四季の彩り日記屋上緑化システム株式会社
技術顧問　山下 律正

246

四季彩１４ポット苗のひでり耐候性　

Weather resistance of Shikisai 14 pot seedlings

四季彩１４ポット苗の40日間の旱（ひでり）耐性

40-day drought resistance of Shikisai 14 pot seedlings

枯損までの継続試験　６２日間経過試験　

Continuous test until withering, 62 days elapsed

ポット苗の40日間の旱（ひでり）試験　（耐乾燥性試験）　　

試 験 品 種    ：四季彩14

試　験　体　 ：9か月育成苗

条　　　件　 ：透明波板軒下直下2ｍ壁面側、９か月育成ポットをざる容器に置き試験を行う

無潅水、無肥料、無農薬

置き場所方位：南南西

開 始 日 時   ：２０２３年5月31日～7月10日　40日間

試験終了日　：２０２３年5月31日

試験開始：２０２３年5月31日　Exam start: May 31, 2023

No 1

No 2

No 3

２０２３年6月4日：4日経過

No 1

No 2

No 3

下葉が多少落葉する以外に変化なし　There is no change other than some lower leaves falling off.

斑入り色ははっきり鮮明に出ている　The variegated colors are clearly visible

２０２３年7月10日：40日経過

No 1

No 2

No 3

試験結果　Test results

四季彩14　３試験体を用意し　試験開始、4日経過、40日経過の経過を観察し、旱状態が成体に及ぼす影響を観察した。

40日経過の評価：１件正常に成長、1件成長停止、1件衰退

植栽9か月のポット苗では、乾燥対性40日以内、最適には30日程度が限界と思われる。

この結果より、ポット苗移植後、潅水を行い根と株の充実と実現しないといけない。

旱性を発揮するが四季彩14は斑入り・全斑品種の為通常の四季彩キリンソウより乾燥耐性・旱耐性は低い事を考慮した管理が必要である。

This test is a verification test for damage caused by withering due to lack of rainwater after planting at planting sites during the dry season in Southeast Asia and abnormal climate in Japan. Although the experiment was conducted under a transparent corrugated eave, the test was conducted to determine how long the plant could be maintained in a normal state without water supply, and when the plant would begin to wither. Since the conditions are not the same at the actual construction site, please use this as a reference.

40-day drought resistance of Shikisai 14 pot seedlings

Test variety: Shikisai 14

Trial body: 9 month grown seedlings

Condition: Place the 9-month growth pot in a sieve container and conduct the test 2m directly below the eaves of the transparent corrugated plate on the wall side. No irrigation, no fertilizers, no pesticides

Location direction: south-southwest

Three test specimens of Shikisai 14 were prepared, and the progress of the test was observed after the start of the test,4 days had passed, and 40 days had passed, and the effects of drought conditions were observed.

July 10, 2023: 40 days have passed 1 case grew normally, 1 case stopped growing, 1 case declined. For potted seedlings that have been planted for 9 months, the drying period seems to be within 40 days, and optimally about 30 days. Based on this result, it is necessary to water the seedlings after transplanting them into pots to enrich the roots and stock. Although it exhibits drought tolerance, Shikisai 14 is a variegated/all-variegated variety and must be managed with consideration given to its lower drought tolerance and drought tolerance than regular Shikisai Kirinso.

枯損までの継続試験　６２日間経過試験　　

Continuous test until withering, 62 days elapsed

No 1

No 2

No 3

６２日経過試験結果：１件成長停止、１件停止から衰退に、1件衰退

６２日乾燥環境に置かれると、ポット苗は充実株でないと枯損方向に進む。

植栽後に乾燥が続き枯損せず維持できる期間はポット苗では、乾燥対性40日以内、最適には30日程度が限界と推定される。

この結果より、ポット苗移植後は、潅水を行い根と株の充実させる必要がある。

四季彩14は斑入り・全斑品種の為通常の四季彩キリンソウより乾燥耐性・旱耐性は低い事を考慮した管理が必要である。

Continuous test until withering62 days

have passed1 case stopped growing, 1 case stopped to decline, 1 case declined When placed in a dry environment for 62 days, potted seedlings tend to wither unless they are fully grown. For potted seedlings, it is estimated that the maximum period of time after planting without drying out and withering is within 40 days, and optimally about 30 days. Based on this result, it is necessary to water the seedlings after transplanting them into pots to enrich the roots and stock. Since Shikisai 14 is a variegated/all-variegated variety, it must be managed with consideration given to its lower drought tolerance and drought tolerance than regular Shikisai Kirinso.

技術顧問　山下律正

Technical Advisor: Ritsumeikan Yamashita