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一、促成栽培花卉生长、发育的一般规律是在满足适宜的水份、养份、温度、光照的条件下,就能以营养生长转化到生殖生长。要使菊花在自然开花期前开花的,就必须提早满足其生殖生长所需要的条件。主要解决日照过长的问题。办法是采取遮光处理:每天只给十小时光照,从下午五时至翌晨七时前用黑布将菊花遮住(待天黑后将黑布除去),连续三十至四十天,即能提前开花。漏光或中断遮光都将无效。遮光的起讫日期均服从于对开花日期的要求。凡提前在自然开花期以前开花的,均可按上述方法类推。同时养护措施要跟上,确保
First, to promote the cultivation of flower growth and development of the general rule is to meet the appropriate moisture, nutrients, temperature, light conditions, will be able to vegetative growth into reproductive growth. For chrysanthemums to bloom before the natural flowering period, the conditions needed for their reproductive growth must be met early. Mainly solve the problem of long sunshine. The solution is to take a light-shading treatment: light only for 10 hours a day, cover the chrysanthemum with black cloth from 5 pm to 7 am the following morning (remove the black cloth after dark) for 30 to 40 consecutive days Can bloom in advance. Light leakage or interrupted shading will be invalid. Shading date and time are subject to the requirements of the date of flowering. All flowers that flowering ahead of the natural flowering period can be deduced as above. At the same time conservation measures to keep up, be sure