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上海地区要在春节或情人节形成产花高峰,这在一般无加温条件的大棚内栽培很难达到。根据上海气候条件,所谓冬花,一般在12月中下旬至1月上旬为冬季产花高峰期,而到春节、情人节只能采取少量的尾花。以往即使在有加温条件的单位,冬季也只能形成一次产花高峰,如元旦前后形成高峰,春节、情人节采花甚少。如果让春节、情人节多出花,只有在花蕾形成后采用“冷棚”调节,让花延迟到春节或情人节采取。我们通过利用发电厂的余热,运用月季品种间开花与温度日照相关性的原理,采取科学合理的修剪,掌握不同生长阶段养分吸收动态,加强水分、营养液、激素、温度等综合调控,促使12月中下旬进入冬季首批采花高峰,情人节进入第二批采花高峰。平均每株再可产花4.5支,每支以2元计,亩产增加2.7万元。栽培技术要点
Shanghai area in the Spring Festival or Valentine’s Day flower production peak formation, which is generally difficult to achieve cultivation in a greenhouse without heating conditions. According to Shanghai’s climatic conditions, the so-called winter flowers, generally in late December to early January for the peak winter flowers, and the Spring Festival, Valentine’s Day can only take a small amount of flower. In the past, even in the heating conditions of the unit, the winter flowers can only form a peak, such as the peak before and after the New Year’s Day, the Spring Festival, Valentine’s Day harvest rarely. If the Spring Festival, Valentine’s Day and more flowers, flowers formed only after the use of “shed” adjustment, let the flower delay to the Spring Festival or Valentine’s Day to take. We take advantage of waste heat from power plants and apply the principle of the correlation between flowering and temperature and sunshine on the varieties of rose to take scientific and reasonable pruning to grasp the dynamic changes of nutrient absorption in different growth stages and strengthen the comprehensive regulation of water, nutrient solution, hormones and temperature to promote 12 In the second half of the month, the first batch of winter harvest flowering peaks is entered, and Valentine’s Day enters the second batch of flowering peaks. The average yield per plant can then spend 4.5, each with 2 dollars, increase 2.7 million yuan per mu. Cultivation techniques