How to cultivate eggplant in greenhouse? What should I pay attention to?

Eggplant is panicum miliaceum, which is sensitive to temperature, and its growth temperature is between 20-30 degrees, so it is suitable for planting in spring and autumn. The planting time in spring is generally from February to March, and crops can be harvested from May to July. Sow in the field from July to August in autumn and harvest in June10-65438+February. Of course, with the development of planting technology, the temperature can be controlled manually, so many vegetables can be planted out of season or in greenhouse, and their economic value can also be improved. So how to make eggplant grow bigger and bigger? There are several ways!

I. Planting methods

1, seed selection

After years of cultivation and planting, eggplant has produced many varieties, so we should choose according to local conditions. For example, in some areas, the annual average temperature is high, so we should choose varieties with good heat resistance when planting; On the contrary, if the annual average temperature is low, it is necessary to choose cold-resistant varieties; There is more rain in some areas, so it is necessary to choose rain-tolerant varieties; But in any case, the selected varieties must have good disease resistance.

2. Soil preparation

Choose the soil with loose soil, sufficient fertility and good drainage, and the area with sufficient light is the best. Deep ploughing and exposure to the sun, ridging height above 30 cm, double row planting 1.7m, single row planting1m. ..

Step 3: sow.

Eggplant can be sown in spring and autumn,1-February in spring and July-August in autumn. Of course, this is also caused by climate change in the region. Generally, the amount of seeds used per mu is 15-20g.

4. Fertilizer and water management

Eggplant also has high requirements for water and fertilizer, so it should be lightly fertilized at seedling stage, depending on plant growth, but it is not suitable to apply thick fertilizer, otherwise it will hurt seedling roots or lead to white growth of plants. When pollinating, if the plant is not seriously deficient in fertilizer and water, it is generally not fertilized or watered. When the fruit is as big as an egg, it should be fertilized and watered in time to promote the rapid expansion of the fruit. However, when the fruit turns color, fertilization should be stopped, but water should be used to keep the soil moist at all times.

5. Tian Tuan management

In order to reduce the consumption of plant nutrients and make plants blossom and bear fruit, the side branches of plants that have not sprouted should be removed at the budding stage, and the plants should be supported by brackets when bearing fruit to prevent the plants from falling to the ground and the fruits from rotting.

Second, the watering method

In the process of watering eggplant, the water should be placed at the root system and poured thoroughly to ensure that all roots can absorb water evenly. Because the root system has no main root or main root is not obvious, and the root system is weak, furrow irrigation can be used to avoid soil erosion, and flood irrigation or direct flushing with water pipes cannot be used.

Third, water control.

1, sowing date

When planting eggplant, you should pour enough water. First, water can be poured all over the planting area to keep the internal soil moist and the surface dry for a long time and keep the water in the permeable layer. Too many times of watering will lead to the increase of soil relative humidity and cause diseases in the later seedling stage.

2. Seedling stage

After transplanting eggplant seedlings, generally do not water them, let the seedlings adapt to the environment first, and promote the roots to absorb water and accept nutrition by themselves. But don't let seedlings die because of lack of water. One week after transplanting, the growth of seedlings returned to normal. Water the roots once to ensure that the leaves unfold for photosynthesis, and make necessary nutrients for their own growth, which is beneficial to the growth of the roots.

3. Fruiting period

The fruit growth period is also the period when water is most needed, which can increase the number of watering and promote the rapid expansion of the fruit. Insufficient water will result in less fruit, small fruit, rough peel surface and poor quality. The specific watering amount depends on the growth of plants and the weather at that time.

4. Before harvesting

2-3 days before harvesting, water should be poured again to ensure the quality of the fruit when it is fully expanded. In the future, each layer of fruit should be watered in time according to this requirement in the early stage, middle stage and before harvesting. Generally, water the fruit once, not several times, to ensure the continuity of fruit growth and development, and water it once a week until the plant no longer bears fruit.