The cultivation of shed vegetables should go out of the wrong zone

For a few days, the author walked into the pollution-free vegetable production park in Xinye County, Henan Province, and listened to more than a dozen greenhouse vegetable greenhouses to talk about the management experience of greenhouses, and the greenhouse vegetable cultivation should go out of six misunderstandings.

    Misunderstanding 1: More fertilization and more output.

    Excessive fertilization of vegetables can easily cause fertilizer damage. Solution: First , after three years of greenhouse greenhouses, chicken and cow dung should be controlled within 2,500 kg, and fertilizer should be reduced by about 50 %. The second is the large salt concentration plot, focusing on the application of cow dung, humic acid fertilizer and EM bacterial fertilizer to increase the soil carbon-nitrogen ratio, loose soil ventilation, salt release and fertilizer damage. The third is to supplement boron, zinc and magnesium fertilizers to balance soil nutrition.

    Misunderstanding 2: More seedlings, high yield.

    Winter temperatures are low, light is weak, photosynthesis is poor, carbohydrate synthesis is low, and only reasonable density can produce high yields. Solution: First, the wintering vegetables are reasonably sparsely planted. Second, it is possible to adopt the management method of early dense planting, medium-term planting, and late branching, which is subject to the fact that leaf branches are not crowded.

    Misunderstanding 3: The temperature is high and it grows fast.

    Vegetables have an upper temperature limit, typically 25 to 32 °C. The temperature is too high, the respiration is large, the plants are long, the nutrition and reproductive growth are not balanced, and the yield is decreased. Solution: First, set up two air outlets in the greenhouse to cool down in time. The second is to manage according to the temperature required for the growth period of various vegetables and the temperature requirements of each organ growth period.

    Misunderstanding 4: The plant grows well and grows well.

    The vegetative growth is too high and the yield is reduced. Solution: First, control the water to promote roots in the seedling stage, so that the photosynthetic products in the lower part of the ground account for about 60 %, and the underground and above-ground absorption in the middle and late stages account for 50 %. Second, the pre-plant consumption of nutrients accounted for 60 %, reproductive growth accounted for 40 %; medium-term each accounted for 50 %; late reproductive growth accounted for 60 % to 70 %, and vegetative growth accounted for 30 % to 40 %.

    Misunderstanding 5: Fighting drugs, less disease.

    It is not always necessary to control the spread of the disease. Solution: First, look for the disease, symptomatic spray. The second is to improve the ecological environment, and should reduce the temperature of the leaves. The third is the death caused by soil-borne bacteria, and the drug is prevented during the seedling period. If the source of the disease is neglected, the disease is inoculated at the seedling stage, and the disease is invaded in the later stage. The bacteria have invaded the plant body, and the effect of fighting drugs is not good.

    Misunderstanding 6: There are many times and more income.

    Planting a lot of times, often low efficiency. Solution: First, a big winter, a good trip, spring and autumn are suitable for two years. The regeneration of eggplant, pepper, tomato and cucumber can be renewed at a low price. The second is to stay in the summer for a period of deep turn, rain and salt, sun exposure and sterilization, shed shed insects, mature soil.