At present, the contradiction between supply and demand of pesticides and price increases is more prominent, but the phenomenon of cotton pesticide waste is also very serious, which not only aggravates the contradiction of the tight supply of pesticides, but also increases the input cost of cotton production by farmers in key cotton-producing areas. At the same time, it also brings environmental pollution, cotton flower bud period and fruit phytotoxicity to the rural areas. Recently, it has been found that there are five such cases of waste in the use of cotton pesticides:

1. When some cotton farmers dilute the pesticides, they will use the equivalent of the pesticide bottle caps, and estimate the drugs according to their feelings. The pesticides thus formulated are very inaccurate, not too much or too little. Too much phytotoxicity caused by cotton, rice and other crops will cause excessive pesticide residues, affecting the quality of agricultural products. If the dosage is too small, it will not work and will not reach the effect of treating insects.

2. Large cotton planters mistakenly believe that the greater the concentration of pesticides used, the more beneficial it is to the control of cotton, bollworm, cotton bollworm, Spodoptera litura, cotton red spider, cotton aphid, blight and other diseases and insect pests in the middle and late stages of cotton. Therefore, the concentration of pesticides is increased at will, and some are even two or three times higher than the normal use concentration.

3. Some cotton farmers do not understand the relationship between pests and diseases and pesticides. When using pesticides, they are blind and have often caused the wrong use of drugs. It is difficult to achieve effective prevention and control of pests and diseases.

4. Some cotton farmers always like to mix pesticides that cannot be mixed, so that the active ingredients of pesticides are directly damaged. Not only does it cause human waste, but it is also easy to produce certain phytotoxicity to cotton crops of high quality cotton varieties.

5. Some cotton farmers do not use interlacing sprays when using manual sprayers. Instead, they use drugs in cotton fields at high temperatures and high temperatures at noon. When some cotton farmers use workers and workers with type 16 hand-shake sprayers, they do not carefully check whether the equipment leaks before spraying. Blockage, the sprayer liquid is overfilled with the potion, and the medicine is wasted when the medicine is used.

The waste phenomenon in the use of the above five pesticides cannot but cause the attention of the majority of farmers in key cotton-producing areas. Cotton plant protection technicians should also carry out propaganda in this area and strengthen technical guidance on cotton farmers' disease prevention and pest control, improve the level of cotton farmers' scientific drug use, promote scientific dilution of drugs, save money, prevent waste, and ensure drug efficacy. China Pesticide Network draws data from agricultural experts, only for cotton farmers' reference: 1000 g of pesticide bottle caps, the volume is 13 ml; 500 g of pesticide bottle caps, the volume is about 12.5 ml; 250 g The pesticide bottle cap has a volume of 6 ml; the 100 g loaded pesticide bottle cap has a volume of about 3.5 ml. Nowadays, it is the frequent occurrence of pests and diseases of crops such as cotton in the south. It must be dispensed in proportion and cannot be blind!

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