The undeveloped main root of pepper is a crop that is not tolerant to drought and has strong adaptability to temperature, but its flower bud differentiation requires a narrow temperature range (15-32°C). Too much water is not conducive to its growth; too much fertilizer, easy to disease; light is too strong, production decline. The physiological and non-physiological methods of ecological abnormalities in greenhouse common abnormal peppers are as follows: 1. Glaucoma 1. Symptoms: After sunny days, the leaves are withered, and leaves wilting after high temperature ventilation at noon. Yellow-green mosaic, no obvious symptoms on the back. 2. The cause of the disease: The degree of lignification of the rootstock of the pepper is high, the tissue is dense, the water nutrient ooze pressure is small, and it is not tolerant to drought; the roots of the pepper are atrophic even after cloudy days, and the absorption capacity is weak after being exposed to light. The light intensity and high temperature of the plant evapotranspiration are large and large. Ventilation can cause dehydration, causing calcium deficiency, boron, manganese, iron and other flashes. 3, control methods: cloudy, should open the grass seedlings to see seedlings to see light; cloudy to sunny, strong light, cover part of grasshoppers to form a flower shadow, so that plants slowly adapt to gradually increase the amount of light and intensity; After the emergence of leaves, timely shade and cooling, do not remove membrane ventilation, spray water first, after the spray of multi-element nutrient solution. Second, wrinkled leaf disease 1. Symptoms: The leaves are green and yellow, the heart leaves grow slowly, the leaf margins roll up, the leaf flesh rises, the veins are concave, shrinkage and unevenness; the roots of the xylem become black; the flowering period is delayed and the flowers are not real . 2, the cause of the disease: the Department of the night before the temperature is too low (15 °C below), caused by boron deficiency. 3. Control measures: spray borax 700 times or boron-containing element fertilizer on the leaves during the day; increase the room temperature in the middle of the night to 20°C as much as possible, and keep it at 15°C in the middle of the night, so that the photosynthetic products and nutrients can function normally. After 2-3 days, the leaves can be restored to flatness. Third, deciduous bud disease 1, symptoms: the lower part of the yellow veins, from brown to yellow and fall, buds and young fruit will fall off due to nutritional deficiencies. 2. Cause of the disease: Phosphorus is an important element related to the differentiation of flower buds; early lack of phosphorus can cause poor bud development, resulting in spontaneous fall after flowering. In the early period of pepper growth, the absorption of potassium is small and the fruit set-up period is increased, and potassium is the most active element among the 16 nutrients. The result of the greenhouse pepper is at the low temperature and low light period, and the lack of potassium in soil or insufficient supply of potassium may cause defoliation. . 3, prevention methods: from the seedling stage to the bud stage to focus on the spraying of potassium dihydrogen phosphate, green Fengbao or photosynthetic fertilizer, to add phosphorus and potassium. Fourth, umbilical decomposing fruit disease 1. Symptoms: Capsicum annuus growing point tips dry coke, fruit umbilical black plaster-like dry rot, the Department of calcium deficiency caused by physiological disorders. 2. Causes of morbidity: Calcium is the most important element for the growth of pepper crops, and it plays a major role in controlling and controlling 16 nutrients. Although calcium is abundant in the soil, calcium is the least mobile element in the plant. Temperature is too low or too high or drought can cause calcium deficiency in the plant. 3. Control measures: Apply 10 kg of calcium nitrate per acre or 50 grams of vinegar to the leachate per acre during the fruiting period of the pepper, and apply 15 kg of water to the leaves for spraying.
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