1. The yellow leaf that appears as a result of high temperatures and drought is mainly pepper. Leafs are curled upwards, leaves are greened and yellow spots appear in the veins, gradually leading to the cedaring of the entire leaf, which leads to a significant fall in the leaves. Prevention and treatment: the recovery of slow seedlings can be achieved through the application of leaf fertilizers or the timely watering of water, and manual cooling and shade of ventilation in high summer weather. 2. The availability of yellow leaves due to nutritional deficiencies is uneven in the production of peppers, and inadequate intake of various elements can result in cases of pepper leaf. When peppers lack nitrogen, there are short-planted, pepper blades thin and yellow, and leaves fall; when peppers enter the fruit season, insufficient intake of magnesium causes the leaves to fertilize on both sides, and then gradually spread to the whole of the leaf, with fresh leaves remaining green, while old leaves begin to fertilize; in the case of yellow leaves and leaves falling as a result of nutrient deficiencies during the planting of peppers, timely and targeted supplementary nutrients are not overdosed in order to supplement the nutrients, which is strictly proportional to the intake, so that the excess of the elements is not stunted. 3. Measures to combat the harmful effects of medicine and fattening: in the event of a medical or fertilizing hazard, water and water injection, dilution and fertilizer concentrations are carried out in a timely manner, while nitrogen fertilizer, leaf fertilizers and plant regulators are followed up to improve the cropland and mitigate the effects of the drug and fertilizer. 4. Yellow leaves caused by pests and diseases, such as yellow atrophy, folicosis, viral disease, aphids, white powder lice, etc., all contribute to the occurrence of large leaves falling in the event of severe chilli yellow leaves. Measures to combat the fall of leaves due to outbreaks of pests and diseases: targeted prevention measures based on the disease type of disease and disease should be carried out in strict compliance with the levels and doses of drugs used, preferably on a rotational basis, in order to prevent the mutilation of agents。
