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2013年の結実状況による山形版ブナ豊凶予測手法の検証
The evaluation of the forecasting method of beech crop in Yamagata based on seed production in 2013
2014
Tohoku Shinrin Kagakkaishi
The evaluation of the forecasting method of beech crop in Yamagata based on seed production in 2013
〔 )us year ( in order to escape from naturaL enemy ), Since fiower productjon and predator activity may depend on climatic ellvironments , the values of these two conditions cannot be equal at all 〔 〕 ther stunds in Japan . In Yamagata prefecture, for example , it has been recently pointed out that more than 350 flowers , ' wou ⊥ d be cnough fQr a good seed crop ( 90− 350 fQr medhlm crQp and < 9〔 }for bad crQp ). In 2013 , seed productbn shQwe 〔 Harge varlation among l6 stands in Yamagata
doi:10.18982/tjfs.19.2_37
fatcat:ltmylpa66rhdvbitrc3e5d3oie