Spinach is divided into winter spinach, spring spinach and autumn spinach according to different production seasons. Winter spinach is planted in the end of the first year of autumn. It needs a long period of dormancy in the spring harvest. Therefore, it is especially necessary to pay attention to the fertilization of winter spinach. Acre of winter spinach 4000 kg pre-planting requires the application of high-quality organic fertilizer 5000 kg of phosphate fertilizer 40 kg. The basic fertilizer is sufficient to grow vigorously. It is the key to safe wintering. Before wintering, the spinach seedlings are about 10 cm high, and it is necessary to apply 1 wintering fertilizer according to the growth. Apply 10-15 kg of phosphate fertilizer to 10-15 kg per mu. Before the winter, you must pour 1 cold water to prevent the dead seedlings from being dried in winter. After the spring of the next year, the seedlings should start to grow in time. The fertilizer should be applied in 20-25 kg. Phosphorus and potassium fertilizer 15-20 kg chase the third fat every 10-15 days. Spinach topdressing is to use Shi Shi to avoid spreading the fertilizer in the heart leaves so as not to cause the seedlings to be combined with watering every time. It can also be sprayed with 0.3% chemical fertilizer concentration and foliar treasure. The fertilization techniques of spring spinach and autumn spinach are basically Same as winter spinach.
Huaxian Liu Huimin
Huaxian Liu Huimin
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