Winter seedling raising techniques of summer squash

Zucchini is suitable for spring or autumn sowing, when the climate is suitable for its growth and development, and in order to meet market demand, many planting often use greenhouse technology to plant in winter, winter planting zucchini must first do a good job of seedling technology. So how should zucchini grow in winter? Let's learn about it together with Xiaobian.

1. Soil preparation and fertilization

Before planting, we should first select varieties with strong disease resistance, high yield and good appearance, which is the basis of high yield. Zucchini is a slightly acidic soil, suitable for soil pH between 5.5-6.8, so consider this when selecting land. In addition, zucchini has strong fertility. If too much nitrogen fertilizer is applied, it is easy to cause its stems and leaves to grow excessively, resulting in serious flower and fruit drop and high incidence of diseases and insect pests. Therefore, nitrogen, phosphorus and potassium fertilizer should be reasonable when applying fertilizer. Under normal circumstances, to produce 1000 kilograms of zucchini, it requires 3.92 kilograms of pure nitrogen, 2.13 kilograms of phosphorus and 7.29 kilograms of potassium.

2. Sowing seedlings

Whether seedling bed or nutrition bowl seedlings, in the sowing before the first to do a good job of nutrient soil preparation, then the key to cultivate strong seedlings of zucchini. Generally, three parts of fertile garden soil that has not been planted with melons and fruits in 3-4 years is taken, a part of decomposed enclosure fertilizer is added, a small amount of plant ash is added, mixed and sieved, put into a nutrition bowl or make a bed, and then prepare for sowing. After sowing, the soil is covered by two centimeters. In addition, in order to control underground pests, a small amount of bran accompanied by methamidophos can be scattered on the surface of the bed, and then closed with a small arch to keep warm and moist until emergence.

3. Strong seedling standard

After emergence, management should be strengthened and strong seedlings should be cultivated. The standard of strong seedlings is about 30 days old, with 3-4 true leaves and a plant height of about 10 cm. Stems thick in 0.5 cm or so, petiole length and leaf length equal, leaf color dark green, cotyledon intact, root system developed, such strong seedling growth force, high survival rate after planting, and yield will be higher.

4. Temperature management

Winter temperature is low, in order to normal growth of zucchini, temperature regulation is the key point, through greenhouse technology during the day to maintain the temperature between 20-25 degrees, more than 25 degrees like ventilation cooling. At night, it should be kept between 10-15 degrees, and the minimum should not be lower than 6 degrees. At the same time, watering should be controlled during this period. When there is water shortage, appropriate amount of water can be irrigated, but ventilation should be paid attention to after watering to reduce air humidity and prevent diseases.

The above is the introduction of zucchini winter seedling technology, I hope to help you, want to know more about the relevant knowledge, please pay attention to us.