With the development of modern agriculture, greenhouse cultivation has become a new way of planting, but there will be various problems in the process of eggplant greenhouse planting, which will cause great damage to the growth of eggplant. Below, we will share with you the eggplant greenhouse. Common problems during planting.
1. Shooting of buds will occur during eggplant greenhouse cultivation.
Symptoms: The growth point of the eggplant clam and the top stem bud are bent, and the stem becomes thinner, which is only 1/5 to 1/3 of the normal bud stem. Plant growth temporarily stops or grows slowly.
Causes of the disease: low temperature and too much oxygen cause the plant to absorb potassium and boron.
Control measures: Add organic fertilizer during planting; apply potassium sulphate 15kg/mu and borax 1kg/mu during ground temperature and low light period, or spray high potassium nutrition solution and borax 1000 times solution on leaf surface to rejuvenate plants.
2. Eggplant yellowing will occur during the cultivation of eggplant greenhouses.
Symptoms: Young leaves are bright yellowish white, leaves are green, and rust spots appear on the middle and lower leaves.
Causes of the disease: multi-fertilizer and high-humidity, the soil is acidic; excess manganese inhibits the absorption of ferrite, leading to yellowing of the heart.
Control measures: After the onset, the leaves are sprayed with 500 times of ferrous sulfate; magnesium hydroxide and lime are applied to the soil to adjust the pH of the soil; potassium fertilizer is added to balance nutrition and meet or promote ferrit absorption.
3, the eggplant greenhouse will grow during the process of planting the top leaves withered
Symptoms of the disease: the top bark cork is cracked, the leaves are green, the edges are dry and yellow, and the top of the fruit is concave, which is easy to be infected with cotton blight and rotten fruit.
Causes of the disease: In alkaline soil, from low temperature and low light (mid-February) to high temperature and strong light period, the aboveground part of the transpiration is large, and the root absorption capacity is weak, which will cause the top leaves to be deficient in calcium, boron deficiency and wilting.
Control measures: pay attention to foliar supplement calcium and boron fertilizer; at noon at high temperature and strong light, cool down and prevent dehydration; pre-heating in the first half of the night to promote long roots, after 3 to 5 days, after the above-ground and underground growth balance, then enter the glare management.
4, the eggplant greenhouse will grow during the process of planting dead leaves
Symptoms of the disease: the middle and lower leaves are dry, the heart leaves are dull, the leaf tip to the middle vein is yellow, and gradually expands to the whole leaf, and the stem is broken, and the vascular bundle has no black ribs.
Causes of the disease: Before and after the winter solstice, the soil moisture is poor, the soil has large voids, and the root system is caused by water shortage; the excessive fertilization and the large soil concentration cause the plant to dehydrate and cause physiological magnesium deficiency.
Control measures: watering the frozen water, roots to improve the low temperature, to avoid frostbite roots; with calcium, magnesium fertilizer 30kg / mu, enhance leaf photosynthesis and alleviate the disease.
5, eggplant greenhouse cracking process will occur
Symptoms: The fruit is stiff and not swollen, the skin color is dull, there are white streaks, the fruit is sprinkled after watering, the length is not big, and the quality is poor.
Causes of the disease: low temperature and low light and high temperature and strong light period, the amount of phosphorus in the fruit expansion period is too large, inhibiting the absorption of potassium and boron, making the fruit seeds less fleshy and rigid.
Control measures: The application of phosphate fertilizer is controlled during the fruit expansion period.
6. The buds will not open during the cultivation of eggplant greenhouses.
Symptoms of the disease: the ovary does not expand, the buds are not tightened, and the pollination is fertilized and becomes a rigid fruit.
Causes of the disease: mainly due to insufficient boron deficiency, the flower camp is not open for a long time.
Control measures: Foliar spray application of Boron with 700 times of borax.
7. Deciduous fruit will appear in the process of eggplant greenhouse cultivation.
Symptoms: The yellow leaves of the lower leaves are shed at low temperature, and the young fruits soften and fall off during high humidity.
Causes of the disease: mainly due to the decrease in the amount of gibberellin in the plant caused by zinc deficiency, the lack of auxin in the joint between the petiole and stem, the fruit stalk and the fruit, and the formation of the detachment after separation.
Control measures: spray 700 times of zinc sulfate on the foliar surface, or apply 1kg/mu of zinc sulfate. It can also spray multi-zinc nutrients on the foliar surface to prevent growth.
The above is the common problem of greenhouse eggplant cultivation and disease prevention measures compiled by Huinong. I have learned it? If you want to know more about agricultural technology, please pay attention to the Hui Nong School!
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