Remedy: Bi-care 2 grams + 50 grams of potassium dihydrogen phosphate, water 16 kilograms (a sprayer), foliar spray a mu; separated by 15 days and then protect 2 grams + 100 grams of potassium dihydrogen phosphate + urea 200 G, 16 kg of water, for the second time the foliar spray. At the same time, the combination of rain and timely use of urea for root dressing.
Special attention: First, the drug, fertilizer with water, open, into the sprayer, and then add water to spray, do not directly add urea to the sprayer, due to slow urea melt water, precipitate at the bottom, easy to form a local burning seedlings.
This measure can effectively make the maize growth period about one week ahead of schedule, so as to make up for the impact of maize seedlings on the growth period.
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