The method for preventing mites has been introduced a lot before, but most of them use the method of chemical control, and the problem of using pesticides and phytotoxics is unavoidable. Today, Xiaobian recommends several soil methods without pesticides. The control effect of mites is also the lever. Oh! washing powder The main component of washing powder is sodium dodecyl phthalate, which has a strong contact effect on aphids. Use washing powder 400-500 times liquid, spray 80-100 kg per 667 square meters, even spray 2-3 times, can receive better control effect. Sweet and sour liquid The sweet and sour liquid formulation is wine: water: sugar: vinegar = 1: 2: 3: 4. Put the prepared sweet and sour liquid in the upper open container, which is usually placed in the plant spot where the aphids occur in the evening. The trapping effect is very remarkable. Willow branches Aphids have a strong tendency to smell from willows. To this end, a certain amount of willow branches can be taken into a handle, placed in a plant site where a large number of aphids occur, and a large number of aphids can be trapped together for centralized killing. Yellow board The winged scorpion has a strong tendency to yellow and orange, and can be applied to the yellow plate by applying No. 10 oil, Vaseline and the like. The size of the yellow plate is generally 15-20 cm square, inserted or hung in the field, and the yellow plate should be replaced in time after it is full of mites. Silver gray film Silver-gray has strong repellent effect on aphids. It can be used to hang silver-gray plastic strips in the field or cover crops with silver-gray mulch, which has a positive effect on the infection of aphids. Black light The aphids have strong phototaxis, and the black light that has been prepared in advance is placed in a plant site where a large number of aphids occur, and the trapping effect is extremely remarkable. The ash and urine washings of the ash and the urine are treated with 2%-3% of the ash ash, which can prevent the locusts; the urea, the washing powder and the water are formulated into a urine washing solution at a ratio of 4:1:100, and the effect of spraying the mites is over 92%, and It has the effect of foliar fertilization on crops. The volatile smell of the plant-driven amaranth has a repellent effect on the aphids, and it can be mixed with other vegetables to reduce the density of the aphids and reduce the damage. Foliar spray Foliar spray fertilizer is sprayed with 10% ammonium bicarbonate solution, 0.5% ammonia aqueous solution and 2% urea solution. It is sprayed once every 7 days and sprayed 2-3 times for the control of plants. The mites work well. In addition, the smell of leeks can effectively dispel mites. If it is cross-planted with other vegetables, it can alleviate mites and insect pests. If you want to get more knowledge about pesticides , please pay attention to China Pesticide Net. Flexible lift gate is a flexible soft curtain door, inside and outside the two curtains, curtains used between the aluminum beams connected with a vertically movable rail, the roof beams have levels not in the same straight line and hangar large plants in particular be applicable. Flexible lift door installation does not take up interior space in the hole inside. When the fiest move to open the door, and finally superimposed over the hole. Off event curtain rail first and then fall down until it is completely closed. Flexible Gate,Flexible Pvc Aircraft Folding Up Door,Steel Structure Fabric Flexiile Door,Exterior Automatic Flexible Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.highspeedshutterdoor.com