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菜苗,真叶3~5片叶为质量最好,活力最大。由于加拿大这个垡垦地方气候原因,植物的生长期太短,事先育出老苗是不得已而为之,今年夏天来得早,大约比去年早20天,所以去年我建议大家在6月10以后进行户外农业劳动。如果3~5片叶栽到地里,就会在没成熟前进入霜降期,严重影响产量,甚至绝收。2 C/ M$ N9 f1 x3 l: e9 N
商店里的苗子,来源于greenhouse我以前在哪里干过,西红柿是三月中旬育的,全自动温控,夜间不低于18度,白天超过30度。
5#00055 9 b, |; m7 J/ I+ X& u+ Z( V$ B 2 B; y5 E9 Q5 v; u" T+ H- R6 NAs far as I know, cherry trees that are hardy enough to survive our winter do not produce cherries sweet, if anyone knows any hybrid cultivars that are exceptionally sweet/hardy, please let me know its name, for years, I've been hunting for one, thanks.