187****6552 Q: The baby food has just wrapped in the heart, there are a large number of irregular small spots on the front and back of the petiole, grayish yellow, leaving only the hearts and leaves 5-6 no, can eliminate phytotoxicity, in addition to the plot contains Iron and copper are heavier. What are the reasons?
Jiao Dongyue, Marketing Director, Shandong Changyi Biotechnology Co., Ltd. A: There are two situations that will lead to the above phenomenon. First, the disease caused by leukoplakia, it belongs to the fungi of the semi-chimpanchiae subphylum, due to the metal ion copper and iron The content is high, causing the loss of calcium ions in the old leaves of the baby vegetables, resulting in the loss of water and wilting petiole, resulting in the disease infection, when the choice of control 32% azoxystrobin 10 g or 25% benzodiazepine leaf spray . The second is the high content of iron and copper ions in the soil, resulting in the loss of trace elements of boron and calcium. The petiole of the petiole becomes soft and causes symptoms of physiological deficiency. 10 grams of boron fertilizer and 15 grams of sugar alcohol calcium can be mixed with the above fungicides. .
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