There are many reasons for the falling of pepper, mainly due to improper use of pesticides, fertilization and watering. The occurrence of prickly ash should discriminate the reasons and take different measures to deal with it. (I) Timely prevention and control of pests and diseases Zanthoxylum bungeanum is a peak period of diseases and insect pests, such as fleas, beetles, aphids, hornbills, giardia, leaf roller moths, ants and leaf rust, rot, and shoot tip diseases, etc. Cause fruit drop. Can be sprayed with “99†insecticidal net, locust infestation, solibar, powerful oxenone, haloxurin, fluid glue, and other high-efficiency, low-toxicity pesticides and nutrients such as anti-dropping agent, chemical fertilizer, potassium dihydrogen phosphate, etc. Compounding agents, control effectiveness of more than 90%. Some pepper farmers mistakenly believe that 40% of omethoate is a pesticide of preserved fruit. Actually, 40% of omethoate EC is a highly toxic, high-residue pesticide. It infiltrates, stimulates, and destroys strongly the prickly ash tree and hinders the spraying. Absorption of nutrients causes a large number of blight diseases, causing the pepper to fall and defoliate and die. At the same time, pesticide residues remain in the fruit of Zanthoxylum bungeanum, and it also has a great harm to human health. It is a high-toxic pesticide that is banned by the country. (2) Timely fertilization and supplementary nutrition The pricklyash tree has strong adaptability. Most of them are cultivated on hillside fields. It is difficult to apply farmyard manure for transportation. Therefore, the pepper farmers used to use chemical fertilizers to cause soil compaction and tree malnutrition, resulting in the early onset of prickly ash trees. Fall fruit, even death. There are two measures that can be taken: one is to prickly-growing prickly-ash trees, cut away long empty branches (no fruit branches), and reduce nutrient consumption; the second is to chase multi-element organic fertilizer (farmhouse manure) to adult results. Trees, 15-20 kg per plant fertilizer, plus 0.5-1.5 kg each of superphosphate and potassium chloride. Before fertilizing, it is best to mix in the farmyard fertilizer to facilitate tree absorption. Peanut trees above 10 years of age should be properly increased fertilizer, and add some plant ash. Can also be used chemical fertilizer, potassium dihydrogen phosphate for extra-root topdressing, add a little urea. (C) timely adjustment of moisture Zanthoxylum is more resistant to drought, the least resistance to flooding, water or flood erosion can make the prickly ash tree death. When there is too much rain, the prickly-ash tree is easy to grow long, and it is easy to drop fruit. It is necessary to take immediate measures to adjust; low-lying fluvo-aquic soil, with serious accumulation of water, should be promptly drained. The soil is dry and the pepper and leaves are withered. The cultivator should rake the grass or loosen the roots to keep the mantle evaporate. In addition, the “drought-resistance and yield-increasing agent†can be sprayed on sunny mornings, sprayed once every 10-15 days, and sprayed twice, which not only has a fruit protection effect, but also improves the yield and quality of pepper. In sunny days, the pepper tree must not be watered. In one year, it is best to pour winter pepper in the winter for the prickly ash tree. In the following year, it is only targeted to add water.
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