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夏季高温多雨,番茄病害多,死秧严重。为确保番茄安全越夏,有利秋季二次结果,在越夏期间,应加强“四及时”管理措施。 一、及时供水肥。盛夏高温,及时供应番茄水肥,是死秧与否的关键。田间忽干忽湿,雨后不排,则会造成大量死秧。因此,田间土壤湿度要基本保持一致,一般7天左右浇水一次,雨后要及时排水,并以井水冲灌。在及时供水的同时,还应隔15～20天施一次尿素或硝铵等速效性氮肥,每亩追肥5公斤左右。同时还应叶面喷施磷酸二氢钾,使植株壮而不徒长。
Summer hot and rainy, tomato disease, dead seedlings serious. In order to ensure the safety of tomato in summer, it is advantageous for the second result in autumn. During the summer, the “four timely” management measures should be strengthened. First, timely supply of fertilizer. Midsummer high temperature, timely supply of tomato water and fertilizer, is the key to dead seedling or not. Suddenly dry suddenly wet, rain is not row, it will result in a large number of dead seedlings. Therefore, the field of soil moisture should be basically the same, usually about 7 days of watering, drainage in time after the rain, and well irrigation. In the timely water supply, but also every 15 to 20 days to give a urea or ammonium nitrate and other quick-acting nitrogen fertilizer, top dressing 5 kg per acre. At the same time, should also be sprayed with potassium dihydrogen phosphate leaves, so that plants Zhuang not unfruitful.