Greenhouse watermelon 8424 planting technology, what is the average yield of watermelon per mu

1. Watermelon 8424

Watermelon 8424 refers to Zaojia 8424, which is a variety of watermelon. It was the 24th group of fine varieties successfully bred by agricultural experts from the former Nanhui District of Shanghai on February 4, 1984, hence the name. It is deeply loved by people because of its thin and juicy skin, sweet and refreshing taste, and medium size. The pure 8424 fruit develops in about 30 days. A single fruit generally weighs 8-14 pounds, and the core sugar content is between 12-14 degrees.

2. Greenhouse watermelon 8424 planting technology

1. Planting site selection: It is best to choose fertile sandy soil that is high and dry, with a deep soil layer, good permeability, and convenient drainage and irrigation. In addition, it is also important to note that the planting site should not be chosen where melon and eggplant crops have been planted within 3 years. Try to choose planting sites where the previous crops are corn, rice, rapeseed, cotton, etc.

2. Land preparation and shed construction: First, in late autumn and early winter of the year before sowing, remove weeds and dead leaves in the field and deep plow 25-30cm. Secondly, wait until the soil is dry and easy to break, then level it and till it, and dig a surrounding ditch. Plan the beds and dig ditches for drainage according to the size of the greenhouse. It is best to use staggered arrangement and symmetrical construction when building a greenhouse. Finally, after the greenhouse is built, fertilize and prepare the land for beds. When the soil is dry and wet to an appropriate degree, cover the ground with film and wait for hole-digging and melon planting. Lay a drip tape along the hole-digging position for planting melons in each ridge.

3. Sowing and seedling raising: In order to cultivate high-quality seedlings, electric heating can be used for seedling raising. The germination temperature of watermelon is 28-30 degrees. The soil temperature needs to be maintained at 25-30℃ for 3-4 days after sowing. Stop heating after the seeds break through the soil. Wait until the seeds break the membrane before planting the seedlings. After most of the melon seedlings have emerged from the soil, you can use intermittent heating method, controlling the daytime temperature at 20-25℃ and the night temperature between 15-20℃.

4. Planting: The first step is to harden the seedlings. At this time, stop heating, gradually open the greenhouse mouth, expand the ventilation range and extend the ventilation time. It should be noted that ventilation should not be too strong. The melon seedlings that are about 30 days old and have 3-4 true leaves should be hardened and transplanted between 9:00 and 16:00 on a sunny day or when the temperature is around 10 degrees. Do not water after planting.

5. Water and fertilizer management: Different water and fertilizer management should be carried out according to the different growth stages of watermelons. The principles of fertilization are mainly adjusted according to soil fertility, target yield and plant growth, but do not apply nitrate nitrogen fertilizer, hospital fecal waste and urban waste. Water management should be adjusted according to the growth stage of watermelon.

6. Temperature and humidity management: According to the humidity and weather conditions inside and outside the greenhouse, appropriate adjustments should be made in time. For example, in the initial stage of planting, the temperature in the greenhouse needs to reach 30-35 degrees. When the plants are alive, the daytime temperature is 30 degrees and the nighttime temperature is 15 degrees.

3. What is the average yield of watermelon per mu?

The per-acre yield of watermelon will vary depending on the cultivation variety, method and season. Generally speaking, under normal management conditions, the yield of watermelon per mu is between 4,000 and 10,000 kilograms.