Knapsack sprayer application techniques

Knapsack sprayer, is a lightweight, flexible, high-efficiency plant protection machinery. You can complete the dusting, spraying (including ultra-low volume spraying), spraying granular fertilizer, spraying pesticide granules, items such as health and epidemic prevention work. Mainly suitable for large-scale agriculture, forestry crop insect pest control work. The aircraft belonging to low-volume spraying machinery, the use of technology than conventional large-capacity sprayer spray demanding. Its control effect, efficiency, operating costs and so on and use the hand to operate the machine. Currently, the country sprayer social ownership has more than 400 million units, but a lot due to improper use, failure to give full play the advantages of proper sprayer. Farmers still use manual spray application methods, accustomed to high-capacity targeted sprays, mistakenly believe that foliar spray to start flowing in order to achieve good control effect, so that not only could easily lead to re-spray, leak spray, liquid huge loss of effective deposition was reduced, the control effect is poor, and to achieve their spray rate and reduced efficiency, a serious waste of pesticides, increase cost. Therefore, we must fully understand and correctly grasp the scientific application techniques, to improve efficiency, reduce labor intensity at the same time to get better control effect.
Preparation before operation:
1, do a good job machine maintenance, repair, maintain its technical condition good; prepare enough fuel. The machine uses a single-cylinder two-stroke gasoline engine, must be added to a mixture of oil and gasoline oil, gasoline with 70, with the 10th summer motor oil, No. 6 oil in winter, the ratio used by 1:22.
2, in accordance with the spraying, dusting, such as different jobs require assembly machines; Check all parts are installed correctly and firmly.
3, according to the different kinds of pests of different crops were determined using pesticides, Mushi dosing and dilution; Plant Protection Station, according to the local release of pest information, identify specific pesticide appropriate period.
4, before spraying begins, measure the knapsack sprayer at rated speed traffic. In the medicine cabinet in the amount of water added to reach the rated speed for horizontal spray, spray finished measured the time required to calculate the rated flow (kg / min).
5, machine hand job walking speed is directly related to the amount of pesticide per unit area, must be based on the amount of acres sprayed requirements and effective spray pattern width, take appropriate walking speed, in order to ensure consistent application rates. General machine hand walking speed of 1 m / s or so, which is equivalent to normal walking speed. The aircraft's horizontal range above 9 m, according to various different crops and crop growth period, to determine the effective spray width. For example, the control of cotton pests, can be pre-set at 4 to 6 lines (3 to 5.4 meters), the latter may be set for 2 to 4 lines (1.5 to 3 meters). In order to ensure uniform spraying while improving efficiency, large spray rate may slow walking speed, sprayer rate hour walking speed can be accelerated.