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一、缺铁性黄叶病: 花卉植株嫩叶变黄属一般性缺铁。可用乙二胺四乙酸二钠0.14克,硫酸亚铁(化学纯)0.1克,混合溶入500毫升自来水中,进行叶面喷施(反面要喷到)。君子兰、米兰、栀子、茉莉、茶花等喜酸性花卉,均可用此法。三天喷施一次,持续数次,疗效明显。二、缺氮性黄叶病: 花卉缺氮,首先反应在老叶变黄。可用尿素溶液进行叶面喷施,三天一次,持续数次即见效。勿将此液浇入根部。
First, iron-deficiency yellow leaf disease: yellow leaves of flower plants is a general iron deficiency. Available 0.14 g disodium edetate, ferrous sulfate (chemically pure) 0.1 g, mixed into 500 ml of tap water, the foliar spray (the opposite should be sprayed). Clivia, Milan, gardenia, jasmine, camellia and other acidic flowers, are available this method. Spraying once for three days, continued several times, the effect is obvious. Second, nitrogen deficiency Yellow leaf disease: flowers nitrogen deficiency, the first reaction in the old leaves turn yellow. Urea solution can be foliar spray, once every three days, that is effective for several times. Do not pour this solution into the roots.