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在利用现代化温室设施进行花卉种苗规模化生产过程中,常会遇到植株徒长或生长缓慢、生产超前或生产滞后的现象,一方面是由于温室条件的特殊性,如光照不足、温度过高或过低、通风不良、二氧化碳不能得到及时补充等限制了种苗的正常生长发育,同时如果长期使用铵态氮肥、基质湿度过大等肥水管理不当也会造成种苗的非正常生长。发生这种情况时,种苗质量差,抗逆性大大降低,传统的人工摘心还会增
In the use of modern greenhouse facilities for large-scale production of flower seedlings, plant growth often encountered stumbling or slow production ahead of the production or lag phenomenon, on the one hand due to the special conditions of the greenhouse, such as light, temperature is too high or Too low, poor ventilation, carbon dioxide can not be replenished in time to limit the normal growth and development of seedlings, while if the long-term use of ammonium nitrogen fertilizer, matrix excessive humidity and other inappropriate water and fertilizer management will also cause abnormal growth of seedlings. When this happens, the quality of seedlings is poor, resistance is greatly reduced, the traditional artificial topping will increase