肥料について

https://provenwinners.jp/magazine/gardening_fertilizer/

https://www.sc-engei.co.jp/qa/h_qa/3/

https://sakidori.co/article/821093

活力剤との違い
https://www.rainbow-f.co.jp/usage/hiryou/katsuryoku/#:~:text=%E6%96%87%E5%AD%97%E9%80%9A%E3%82%8A%E3%80%81%E6%A4%8D%E7%89%A9%E3%81%AB%E6%B4%BB%E5%8A%9B%E3%82%92,%E3%81%AF%E8%AA%8D%E3%82%81%E3%82%89%E3%82%8C%E3%81%BE%E3%81%9B%E3%82%93%E3%80%82

https://www.sc-engei.co.jp/qa/h_qa/12.html

スターチスの育て方

https://gardenstory.jp/plants/56176

https://horti.jp/9748

https://gardenstory.jp/gardening/24869

https://horti.jp/7110

https://greensnap.jp/article/9502#:~:text=%E7%A8%AE%E3%81%BE%E3%81%8D%E3%81%AB%E4%BD%BF%E7%94%A8%E3%81%99%E3%82%8B%E5%9C%9F,%E5%89%B2%E5%90%88%E3%81%A7%E7%94%A8%E6%84%8F%E3%81%97%E3%81%BE%E3%81%97%E3%82%87%E3%81%86%E3%80%82

https://allabout.co.jp/gm/gc/379739/

https://www.youtube.com/watch?v=z2CMhB_4S6E

https://www.youtube.com/watch?v=AmM1_a_yydQ

土 2種類
挿し芽・種まき用
園芸用培養土

重心

http://www.crane-club.com/study/dynamics/gravity.html

https://note.chiebukuro.yahoo.co.jp/detail/n158812

https://www.palmie.jp/lessons/74
https://wakariyasuku.info/%E5%8A%9B%E3%81%A8%E3%81%9D%E3%81%AE%E5%88%A9%E7%94%A8/%E7%89%A9%E3%81%AE%E9%87%8D%E5%BF%83%E3%81%A8%E3%81%AF%EF%BC%9F%E3%80%80%E9%87%8D%E5%BF%83%E3%81%AE%E3%82%82%E3%81%A8%E3%82%81%E6%96%B9%E3%81%A8%E3%81%AF%EF%BC%9F/

http://www.crane-club.com/study/dynamics/gravity.html

http://itami-setumeisho.com/archives/963

http://www.rikasuki.jp/rika_no94/rika_no94.htm

https://books.google.co.jp/books?id=UXWKAAAAQBAJ&pg=PA130&lpg=PA130&dq=%E9%87%8D%E5%BF%83%E4%BD%8D%E7%BD%AE&source=bl&ots=HmCWvvD4aw&sig=Msg8qoZ9xexDnqgZSrI-Eo5geDs&hl=en&sa=X&ved=0ahUKEwic5q_omqjWAhWKVLwKHY0qAh84ChDoAQhaMAc#v=onepage&q=%E9%87%8D%E5%BF%83%E4%BD%8D%E7%BD%AE&f=false

http://www.oekaki-hoho-ron.com/center-of-gravity-of-human-body-sketch/

http://izumi-math.jp/F_Nakamura/heso/heso3.htm

https://www.youtube.com/watch?v=7PLiBD5XcEI

https://www.youtube.com/watch?v=NUeLA0flsfg