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蓖麻的生长期较长,一般为200～240天,最怕水渍,较为耐旱,需要大量光照和热量才能发育生长。要想使蓖麻高产,壮苗早发是关键。壮苗早发的标准是:四月苗,五月枝,六月果。具体地说是惊蛰播种,清明见苗,立夏分枝现蕾,芒种组簇成果。反之,芒种分枝,夏至后才能见果,这就是迟发,没有伏前籽,总产量大约下降25%左右。(编者注:为使壮苗早发,在北方寒冷地区,采取温室育苗为好。)蓖麻壮苗早发不是旺苗冲长,壮苗早发的具体表现是:从子叶到真叶,叶圆肥大,
Castor grows longer, usually 200 to 240 days, most afraid of waterlogging, more drought-resistant, requires a lot of light and heat to grow and develop. To make castor high yield, strong seedlings early hair is the key. Strong seedlings early hair standard is: April seedling, May branch, June fruit. Specifically, Jingse see seeding, see the seedlings clear, the beginning of summer branch budding, mango cluster results. On the other hand, the species of Brachyceps, can be seen after the summer solstice, which is delayed, without pre-Vulgare, about 25% decline in total output. (Editor’s Note: In order to make strong seedlings early hair, cold nursery in the north, take the greenhouse nursery as well.) Castor seedlings early hair is not Wang Chong Chong long, strong seedlings early hair specific performance is: from cotyledons to true leaves, Leaf round hypertrophy,