Fertilizer management Leek growth requires lower air humidity and higher soil moisture. The greenhouse air humidity is controlled at 60%-70%, and the absolute soil moisture is controlled at 13%-15%. Generally sticky soil will not be watered if it is poured in winter water before the shed. In order to promote the growth of the next knife, the first knife can be used to pour the first water 5 days before the harvest, 15-20 kg of ammonium nitrate per acre, and then watered with the water. Afterwards, the water must be watered 5 days before the harvest. Increase fertilization material.
Reasonable temperature control leek hi cool environment, the suitable temperature for the growth of 15 °C -24 °C, during the day should be appropriate release. In order to promote the budding, the daytime temperature after the shed should be controlled at 18°C-25°C, and the daytime temperature after budding is controlled at 17°C-23°C. The day before the harvest, the first knife leek temperature control in the 15 °C -22 °C, night temperature control at 10 °C -12 °C. Each subsequent cut can increase the temperature by 2°C-3°C but must not exceed 30°C.
Foliar fertilization during the growth period is sprayed with potassium dihydrogen phosphate 300 times or gibberellin 40,000 times every 7 days. When the leek grows to 15 centimeters, spraying the strong stems of the vegetables can make the stems of the stem thick, the leaves are thick, the leaves are fresh, the plants are lush, and the natural taste is strong. At the same time, it can increase the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons.
Spray the new high-fat film+vegetable Zhuangshouling every 7 days in a reasonable spray growth period, but timely spraying new high-fat film+vegetable Zhuangshaoling can prevent the bacteria from infecting, increase the ability to resist disasters, increase the intensity of photosynthesis, and reduce pesticides and fertilizers. Dosage, reduce residual drug. Simultaneously, the culm culm can be stout, the leaf color is fresh, the taste is strong, and the growth is vigorous.
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