Sowing sooner or later is closely related to the wintering ability, harvest time and yield of the seedlings. It should not be too early or too late. Spinach has 4-5 leaves before freezing. Overwintering spinach is sown from mid-October to late November. At this time, the climate is cool and suitable for germination and emergence of spinach. Generally, it is not necessary to sow germinated seeds, dry seeds and wet seeds. Before sowing, seed dressing with a new high-fat film to improve seed germination rate.
Topdressing overwintering fertilizer can increase soil nutrient content, play the role of winter fertilizer in spring, and promote weak growth. It is especially important for vegetable fields with low bottom fertilizer, poor soil fertility and weak seedling conditions. Therefore, the wintering fertilizer should be applied in combination with potting frozen water, and urea or ammonium sulfate is usually applied per acre, and the fertilizer is applied with water. And spraying photosynthetic nutrient film fertilizer can help plants absorb a large amount of light fertilizer, light energy, light, compatible with conventional fertilizers, and nutrients for plant growth and development. One application benefits throughout the year.
When the foliage grows vigorously, apply nitrogen fertilizer once and apply 10 kg of urea per acre. After the dew disappears on the leaves near noon, sprinkle it on the noodle surface, dip the water in a new broom, and water it one by one. Spraying vegetables Zhuangshenling can improve disaster resistance, reduce the use of pesticides and fertilizers, and reduce residual poison.
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