How to prevent wind damage from cotton planting
April to May is a season of frequent windstorms. It is necessary to do a good job in prevention of windstorms in the cotton planting process in advance, especially in the frequent recurrence areas of windstorms or in weak areas of remote windbreaks.
First, the common types of wind disasters
There are four main types of windstorms commonly found in Aksu, and the level of hazard rises step by step. Let's take a look at the common types of windstorms.
1. Windstorms dominated by sandstorms are in the category of general disasters, and are the natural disasters in the Aksu region with the highest frequency and a high proportion of cotton affected areas;
2. The impact of wind disasters with frost is large, and the area affected by cotton often reaches more than 50%;
3. Wind disaster accompanied by low temperature is a strong disaster, cotton fields will appear a large area of ​​rotten seeds, rotten buds, roots and other phenomena, will also form weak seedlings and dead seedlings cause serious delay in the birth process;
4. Wind disasters accompanied by rainfall are fatal disasters. Once such disasters occur, cotton will be difficult to emerge and die. The precipitation is more than 40% to 65%. The rate can reach about 68%.
Second, preventive measures
(1) Improve the quality of seeding
1. Improve the quality of land preparation. After the land preparation, the surface is flat and the soil is finely divided to ensure that the film is closely attached to the surface after sowing, and it is not easy to be blown by the strong wind;
2, to ensure the quality of sowing. When sowing, the film should be flattened and pressed tightly to prevent the wind from entering the ridge from the film side to pick up the entire film. The third is that the soil is not biased and the amount of soil is increased.
(2) Fighting the windshield
After the seeding is completed, along the mulch surface perpendicular to the mulch film, press a small wind-proof dam at 5 to 10 meters or use a waste plastic bag to fill the soil, and press it on the membrane surface neatly every 5 to 10 meters. The density of the wind-proof small waist dam and the plastic bagged soil film can be adjusted according to the actual situation, and the sand density and the density of the cotton field at the tuyere can be appropriately large.
(3) Requirements for filming direction
In the place where the wind disaster is often encountered, the direction of seeding and filming should be perpendicular to the wind direction to avoid the long-distance flow of sand and sand damage. The vertical sowing to the sand dust from the start to be blocked by the wind grass, the cotton seedlings will not be continuously affected by the wind and sand.
(4) tie up and use the windproof grass
According to years of practical experience, the windbreaker has obvious effects on preventing sand and sand in cotton fields, that is, using cotton wire or rope to bundle cotton stalks, straw stalks, wheat stalks, corn stalks or reed grass into finished straws with a diameter of 30 cm and a length of 60 cm.
(5) Pressing both ends of the drip irrigation belt
When drip irrigation cotton field is planted, the drip irrigation belt must be compacted. The specific method is to dig a small pit at the ends of the drip irrigation belt, bury the end of the drip irrigation belt into the pit, and use the foot to prevent the drip irrigation belt from being blown by the wind.
The Aksu area is not only a cotton growing area, but also a region with frequent windstorms. Therefore, cotton farmers should pay attention to it and do a good job in prevention of wind disasters to reduce the losses caused by wind disasters.
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