2013年8月15日星期四

The basis for selection of cotton prevention equipment

1. Model Size (prevention productivity size) and regional control scale size.
In general, the effective control of cotton pests once for about three days. An effective amount of equipment service Q:
Q = wt
Where W - machinery service productivity (acres / day);
t - effective prevention and treatment period (days).
Such as manual sprayers Q Hand = 3 × 3 = 9 acres.
Motorized knapsack sprayer duster machine back Q = (80 ~ 100) mu / (day × 3) = 240 ~ 300 acres.
Medium boom sprayer machine in Q = (200 - 300) mu / (day × 3) = 600 ~ 900 acres.
2. Machines spray pattern (including formulation, the amount of spray or mist particles spectrum) and the specific requirements for prevention.
Arid areas can be selected ultra low volume chemical sprayer spray control, such as the selection Knapsack Sprayer Duster with ultra low volume sprinklers or hand-held electric ultra low volume machines. Its spray volume of 100 ml / min or so, you can save a lot of water. Powder can be used in the late cotton, fog alternate Prevention. Choice Knapsack Sprayer Mist Duster with head or dusting parts. Small plots can be hand duster dusting.
3. Cotton plots size, degree of mechanization planning, such as the Jota of roadway, row spacing and other closely related with the choice of models.
Medium and large boom sprayer in cotton fields in the late control, we must consider the roadway cotton, plant height, Jota flatness, low roadway middle interplanting crops, as well as including the entire mechanized planting fertilizer and other agronomic system.
4. Cotton combat different growth models to choose different
Seedling small plots can be manual machines targeted spray, spray using Snap point switch, a small amount of solid cone spray mist nozzle diameter of 0.7 mm and a low volume sprinklers tablets. Large plots available in boom sprayer is equipped with a series of narrow row nozzle slit nozzle as 60. Medium-sized plots available in the late knapsack sprayers Duster, a small boom sprayer operating control more efficient. In the lower part of the plant diseases and insect pests can be directed spraying mist flow to increase penetration. Dorsal pest Knapsack Sprayer Duster can be used to spray swing Pentong way to stir strains airflow leaves; or targeted spray boom sprayer; also manually install the L-shaped duster dusting head, dusting head off the ground about 30 cm for dusting.
5. For more serious insect pest disaster situation with a large outbreak of cotton, in order to quickly control the situation and conditional regions can be sized boom water power sprayer or aerial spray equipment for large area quickly extinguished Prevention.

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