How many jin of eggplant per mu in the open air?

The yield of eggplant per mu in the open air is about 7500 jin, and the specific yield varies according to different regions, varieties and planting techniques. In the process of planting eggplant in the open air, we should not only do a good job in water and fertilizer management, but also actively control diseases and insect pests so as not to affect the yield.

1. How many jin of eggplant per mu in the open air

Eggplant has early-maturing varieties, medium-maturing varieties and late-maturing varieties, and it is also divided into round eggplant varieties and long-strip eggplant varieties. the yield per mu of open-air eggplant varies according to its varieties. generally, the yield per mu is about 7500 jin. Of course, this yield is also related to planting technology.

2. Planting methods of eggplant in the open air

1. Seedling planting

The main results are as follows: (1) Autumn eggplant is the best to be sowed from May to June, purple eggplant and other varieties can be used. Open-air seedlings need to be soaked and germinated about 7 days in advance.

(2) seed soaking can use about 50 ℃ of warm water, stir in warm water until the water temperature drops to about 30 ℃, and then set up to soak the seeds for about 9 hours. After soaking, the seeds can be wrapped with a wet towel and placed under the condition of more than 30 ℃ to accelerate germination. Wash the seeds at least twice a day.

(3) half of the seeds will germinate after 7 days, and when the seedlings grow to 15 cm, there will be 8-10 leaves, which will be transplanting in about 30 days.

(4) the seedlings with strong growth and good growth should be selected, and the planting density should be about 50 cm. It is best to plant at about 4 o'clock in the afternoon. After planting, the seedlings should be fully watered, and then watered again the next day.

2. Reasonable water and fertilizer

The main results are as follows: (1) after successful colonization, fully mature farm manure should be applied immediately, and the amount of fertilizer can be determined according to the specific area, or a total weight of about 20 jin of compound fertilizer should be applied in each hole.

(2) when eggplant begins to expand, about 1450-1550 kg of farm manure or compound fertilizer weighing about 30 jin in each hole can be applied in the early expansion period.

(3) about 1950-2020 kg of farm fertilizer or 40 jin of compound fertilizer can be applied in the fruiting maturity period, and the water demand of eggplant in each stage is relatively large, in the sepal stage, bone-strengthening stage and final harvest period, flushing is needed about 3 days before harvest, which is beneficial to the expansion of the fruit and the bright and shiny pericarp.

3. Pruning and branching

Eggplant flowering and fruiting at each stage has a strong regularity, so it is necessary to retain the branches of each layer. The happy pruning method can be used to retain the branches growing on the opposite fork slope or horizontally, and cut off all the other branches.

After all the young eggplants are seated, it is necessary to start to remove all the buds that come out after flowering, and it is the same after flowering, which is more conducive to eggplant absorbing nutrients and promoting the normal growth and development of eggplant.

4. Prevention and control of diseases

Summer and autumn is a period of high incidence of diseases and insect pests, which must be controlled in time. Weeding and soil cultivation can be combined with intertillage, at least twice intertillage is needed, which can effectively eliminate weeds.

Common diseases are cotton blight, eggplant borer and other diseases and insect pests, which will seriously affect the yield of eggplant, or even no production, so it must be timely prevention and control, pay attention to the need to stop the use of drugs a week before harvest, in case of drug damage to the human body.

5. Harvest

It can be harvested when there is no white band at the junction between sepals and fruit, and early varieties can be harvested 20-25 days after flowering.