{"id":15425,"date":"2022-06-07T10:41:36","date_gmt":"2022-06-07T01:41:36","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=15425"},"modified":"2022-06-07T10:41:36","modified_gmt":"2022-06-07T01:41:36","slug":"%e3%82%bb%e3%82%a4%e3%82%bf%e3%82%ab%e3%82%a2%e3%83%af%e3%83%80%e3%83%81%e3%82%bd%e3%82%a6","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=15425","title":{"rendered":"\u30bb\u30a4\u30bf\u30ab\u30a2\u30ef\u30c0\u30c1\u30bd\u30a6"},"content":{"rendered":"\n

理科2分野（死語😓）が苦手だった筆者でも名前を知っていて，わが家の周囲に繁茂している雑草は，オオバコ，ドクダミ，スギナ，フキ，ノビル，名前を知らないのは，イネ科のザ・雑草，山芋系のツルを延ばしまくる草，ピンクの茎の気持ち悪い草，秋にひっつき虫を成らす茎の途中から根が生える気持ち悪い草<\/a>，そして，セイタカアワダチソウです．<\/p>\n\n\n

\n
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繁茂するイネ科のザ・雑草（某用水路近くにて）<\/figcaption><\/figure>\n<\/div>\n\n\n

そうした雑草同士にも栄枯盛衰があり，ここ数年勢力を増しているのは，ドクダミ，スギナ，山芋系の草とフキです．4種に共通しているのは，地下茎を延ばしまくっていることです．また，地下茎ではないですが，ノビルも最近増えてきています．防草シートを突き破って伸びて来ます．上から引いても球根がひっかかって抜けないので始末が悪いです．<\/p>\n\n\n\n

セイタカアワダチソウもかつては，ザ・雑草と呼んでいいほどの勢力でした．やっかいなのは，どこにでも生えて，放置すると人間の背丈ほど伸びて，さらに枯れると木のように茎が硬くなって，手に負えなくなることです．<\/p>\n\n\n\n

また，しぶとい生命力で，刈払機で根元近くから切っても，切った近くから3本の新しい茎を伸ばしはじめます．その3本の茎をまた刈払機で切ると，それぞれから3本ずつ茎が出ます．<\/p>\n\n\n

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セイタカアワダチソウ<\/figcaption><\/figure>\n<\/div>\n\n\n

そして，独特の嫌な臭いがします😓<\/p>\n\n\n\n

ただ，他の雑草ほど底意地が悪いわけでなく，耕耘機でときどき耕すと芽が出てくることはなく，耕耘機がかけられない畑の端や庭に出てきても数十センチくらいのうちに手で抜けば，特に抵抗もなく素直に抜けます1<\/a><\/sup>ただし，あまり若いうちに抜こうとすると，途中で切れて，後に3本の茎が出てきます．<\/span><\/p>\n\n\n\n

ということで，ある程度伸びてきたら手で抜く，というのを忘れないようにしていきたいと思います．<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

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