At present, the contradiction between the supply and demand of pesticides and the rise in prices is quite prominent in some localities, but the waste of cotton farmers is also very serious. This not only exacerbates the contradiction between the shortage of pesticide prices, but also increases the input costs of farmers' cotton production in key cotton producing areas. At the same time, it also brings many adverse effects to the countryside, such as environmental pollution, cotton flower buds and fruit damage during the fruiting period.
Recently, the author has done a survey on many large-scale cotton farmers. There are five kinds of waste in the use of cotton pesticides. One situation is that some farmers use pesticide caps to equate their pesticides when they dilute the pesticides. The pesticides formulated in this way are inaccurate, either too much or too little. Too much will cause pesticide damage to crops such as cotton and rice, resulting in excessive pesticide residues, affecting the quality of agricultural products. If the amount is too small, no effect will be achieved and the effect of pest control will not be achieved.
The second situation is that large cotton planters mistakenly believe that the greater the concentration of pesticides used, the more favorable it will be for the prevention and control of cotton bollworm, cotton bollworm, Spodoptera litura, cotton spider mite, cotton aphid, and wilt disease. Therefore, the use of pesticides is arbitrarily increased, and some are even two or three times higher than the normal use concentration.
The third situation is that some cotton farmers do not understand the relationship between pests and pesticides, and the blindness when using pesticides often results in improper use of drugs and it is difficult to achieve effective pest control.
The fourth situation is that some farmers tend to mix pesticides that cannot be used together, and directly destroy the active ingredients of pesticides. This not only artificially causes the waste of pesticides, but also easily produces certain phytotoxicity to the cotton crops of high-quality cotton varieties.
The fifth situation is when some farmers use hand-operated sprayers instead of intervening sprays. Instead, they fight drugs in high-temperature winds at noon, and some farmers use manual sprayers of workers and peasants 16 models, and do not inspect equipment carefully before spraying. Leakage, blockage, sprayer liquid overdose barrels of medicine, wasted medicine when fighting.
The wasteful use of the above five kinds of pesticides cannot but arouse the attention of the majority of farmers in key cotton producing areas. The cotton plant protection technical personnel in the cotton area should also carry out publicity in this area and strengthen the technical guidance for the cotton farmers to prevent disease and exterminate insects, increase the level of scientific drug use for the majority of cotton farmers, promote scientific dilution of pharmaceuticals, save funds, prevent waste, and ensure drug efficacy. The author has obtained the following data from decades of plant protection work practice and is only for cotton farmers' reference: 1,000 grams of pesticide caps with a volume of 13 milliliters; 500 grams of pesticide caps with a volume of approximately 12.5 milliliters; 250 The volume of the grammed pesticide cap is 6 ml; the cap of the 100 gram cap is about 3.5 milliliters. At present, it is the frequent occurrence of crop diseases and insect pests in southern China's cotton and other crops. The author suggests that relevant agricultural departments introduce a disposable measuring tool for introducing pesticide dosage and matching. Briefly explain the use method and provide a written document to facilitate the science of cotton farmers. With pesticides.
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