Zucchini is sown in spring. It likes high temperature and is not resistant to low temperature and frost. The growth temperature is 20-25 degrees. The seeds will germinate at 15 degrees. The best germination temperature is 30-35 degrees. Reasonable fertilization should be used during planting. Tell me about how to fertilize zucchini.

1. Fertilizer

Zucchini has a well-developed root system, strong absorption capacity, drought tolerance, and fertilizer tolerance. In terms of absorbing mineral nutrients, it has the most potassium, followed by nitrogen, and the least phosphorus. Basically, for every 1,000 kg of zucchini, it needs to absorb 3.9-4.8 kg of pure nitrogen, 2.1- 2.3 kg of phosphorus pentoxide and 4.8-5.5 kg of potassium oxide, the ratio of these three is about 2:1:2. During the production process of zucchini, pay attention to base fertilizer, increase the use of high-quality organic fertilizer and ternary compound fertilizer, and appropriately control the amount of nitrogen fertilizer, which helps balance nutrition and reproductive growth and increase yield. If the amount of nitrogen fertilizer is too high, the stem and leaf The growth will be too long, flowers and diseases are more likely to occur.

2. Soil preparation and fertilization

Zucchini likes weakly acidic soil, the suitable pH is 5.5-6.8, and the summer squash has a strong absorption capacity. Excessive use of nitrogen fertilizer will cause the stems and leaves to become too long, causing flowers and fruits to fall and cause diseases. Usually every harvest 1000 kg of fruit should absorb 3.92 kg of nitrogen, 2.13 kg of phosphorus and 7.29 kg of potassium.

3. Sowing seedlings

Whether it is nursery nursery or nursery nursery nursery, we must first prepare the nutrient soil, which is the key to cultivating strong seedlings. Take 3 kinds of fertile soil and rotten fertilizer that have not been planted with melons in 4 years, then add a small amount of fire ash and wood chips, and mix Evenly, sieving, and then made into a ditch or put it in a nutrient bowl. When everything is ready, you can sow. The soil thickness is 2 cm.

4. Seedling temperature control

During the day, the temperature must be kept between 20°C and 25°C. If the temperature exceeds 25°C, ventilation and cooling are required. Keep the night temperature between 10°C and -15°C and keep the minimum temperature at Below 6°C, during this period, water needs to be properly controlled. If there are obvious symptoms of water shortage, you can pour a small amount of water. After watering, pay attention to ventilation, reduce the temperature and prevent diseases, and prevent diseases such as blasts If it occurs, use a small amount of medicine to irrigate the root system twice. In order to prevent leaf diseases, spray methyl butyl or chlorothalonil in sequence every 7 days; spray insecticide every 5-7 days to prevent whiteflies, aphids, Cabbage insects and leafhoppers attack the seedlings in the greenhouse.