How to apply fertilization to the high yield of zucchini
Site fertilization: Zucchini is slightly acidic soil with a suitable pH of 5.5-6.8. The squash has a strong absorption capacity, and the application of excessive nitrogen fertilizer is likely to cause the stems and leaves to grow, leading to the falling flowers and diseases, and the nitrogen, phosphorus and potassium should be combined when fertilizing. In general, for every 1000 kg of fruit harvested, it is necessary to absorb 3.92 kg of nitrogen, 2.13 kg of phosphorus, and 7.29 kg of potassium. The absorption of the five elements is in turn potassium is greater than nitrogen greater than calcium greater than phosphorus greater than magnesium.
Soaking seeds and germination: first put the seeds into clean water, remove the immature seeds floating on the water, and then soak them in warm water at 55 °C-60 °C for 10 minutes to kill the pathogens on the seed coat, then at 20 °C. Soak in warm water of -30 °C for about 4 hours. After the fish is removed, control the dry water, wrap it with damp gauze, germination at 28 °C - 30 °C, and sown after the seeds are broken.
Sowing seedlings: Whether using seedbed seedlings or nutrient seedlings, it is necessary to prepare nutritious soil first, which is the key to cultivating strong seedlings. Take 3 fertile garden soils that have not been planted with melons within 4 years, a fermented circle of fertilizer, add a small amount of firewood ash and sawdust, mix well, sift, then smash or pack nutrients, ready It can be sown, and the thickness of the overlying soil is 2 cm. After completing this procedure, a small amount of methylamine-loaded bran should be sprinkled on the kneading surface to prevent underground pests, and then the small arched film is used to seal the moisturizing until the emergence.
The standard of zucchini age-appropriate seedlings is: calendar age is about 30 days, with 3-4 true leaves, plant height is about 10 cm, stem diameter is 0.5 cm, petiole length is equal to leaf length, leaves are dark green, cotyledons are intact, The root system is developed.
Temperature management during seedling period: The temperature during the daytime is kept at 20 °C -25 °C, and ventilation should be reduced when the temperature exceeds 25 °C. The nighttime temperature should be kept at 10 °C - 15 °C, and the minimum temperature should not be lower than 6 °C. During this period, it is necessary to scientifically and appropriately control the water, and there may be obvious water shortage symptoms to pour small water. After watering, pay attention to ventilation, reduce air temperature, and prevent disease. In order to prevent the occurrence of diseases such as blight, blight and other diseases, a small amount of Wansuoyi can be added to the roots twice; in order to prevent leaf diseases, it can be sprayed with methyl thiophanate or chlorothalonil every 7 days. One time; in order to prevent the greenhouse whitefly, aphids, cabbage caterpillars, and spotted fly damage to the seedlings, the targeted drug insecticide can be sprayed every 5-7 days.
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