Now is the time of celery, when planting celery, we must pay attention to some methods, otherwise there will be a phenomenon of celery "burning heart", then, how to prevent celery "burning heart"?
1. Symptoms of celery "burning heart": At the beginning, the leaves of the celery heart become brown, and then the leaf margin cells gradually die, showing a dark brown color. Pre-fertility occurs less frequently, generally occurring in 11 to 12 leaves.Linyi Fertilizer Network Copyright
2. The cause of celery "burning heart": mainly caused by calcium deficiency. After a large amount of chemical fertilizer application, the soil is acidified and calcium deficiency, and excessive fertilization, especially nitrogen fertilizer and potassium fertilizer, will affect the normal absorption of calcium by celery roots. In addition, adverse environmental conditions such as low temperature, high temperature, and drought will reduce root activity and weaken the ability of roots to absorb calcium.Linyi Fertilizer Network Copyright
3. Control method of celery "burning heart": Select celery in neutral soil, apply proper amount of lime to acidic soil, and adjust the acidity and alkalinity of soil to neutral. Apply more organic fertilizer to avoid excessive application of nitrogen fertilizer and potassium fertilizer, especially not to apply quick-acting nitrogen fertilizer at one time. Avoid high temperature, drought, temperature is too high, ventilation should be cooled, keep the soil moist, small water poured, can not be wet and dry. When "burning heart" occurs, it is necessary to spray 0.5% calcium chloride or calcium nitrate aqueous solution to the foliage in time, or apply calcium fertilizer such as Green Fenwei No.3.Linyi Fertilizer Network Copyright