Agricultural film drip irrigation water and fertilizer integration technology

The integrated water and fertilizer technology of agricultural film drip irrigation can not only increase the ground temperature and reduce evaporation between trees, but also improve the utilization rate of water and fertilizer to achieve the effect of increasing production, so it is very popular among farmers.

So how does it work? Below, Hot Agricultural Materials Network will give you a detailed introduction to the agricultural film drip irrigation water and fertilizer integration technology.

Agricultural film drip irrigation water and fertilizer integration technology

Fine soil preparation and application of sufficient base fertilizer

Before sowing, soil preparation and ridge formation, wide and narrow row cultivation, generally 40~50 cm narrow rows , 60~80cm wide.

Use a stubble-killing machine to eliminate stubble or deep loosening and rotary tillage. The plowing depth should reach 20~25 cm, so that the upper part is solid and the lower part is empty, and there are no lumps or soil clods. Combined with land preparation, apply sufficient base fertilizer and suppress it in time to achieve the desired level. broadcast status.

Generally, 1,000 to 2,000 kilograms of high-quality agricultural fertilizer, 15 to 20 kilograms of diammonium phosphate, 5 to 10 kilograms of potassium sulfate, or 30 to 40 kilograms of compound fertilizer are used as base fertilizer per acre.

Using a large-scale combined land preparation machine to complete land preparation and ridging operations in one go, the land preparation effect is good.

Laying drip irrigation pipes

According to the location of the water source and the shape of the land, there are two main methods of laying main pipes: independent and composite. The laying method of independent main pipes is more economical. It has the advantages of labor, material saving, and easy operation, but it is not suitable for large-area operations; the laying of composite main pipelines can be used for large-area drip irrigation operations, which requires the water source to be close to the plot, and there is a fixed place in the field that can be equipped with power supply.

There are two ways of laying branch pipes: direct connection method and indirect connection method.

The direct connection method has low investment cost but large water pressure loss, resulting in uneven soil moisture; the indirect connection method has the characteristics of flexibility and strong operability, but it adds controls, connectors and other components. One-time investment costs increase.

The speed and quality of drip irrigation operations when the distance between branch pipes is 50 to 70 meters.

Scientific seed selection

For drip irrigation cultivation under mulching film, choose varieties that are dense-tolerant, have a growth period that is 7 to 10 days longer than open field varieties, and have an effective accumulated temperature of 150 to 200°C.

Seed treatment should be carried out according to conventional methods before sowing.

Reasonably increase the planting density and use 15% to 20% more seeds than ordinary planting methods.

Precision sowing

When the ground temperature of 5 to 10 cm in the tillage layer stabilizes and passes 8°C, plowing can be started for sowing.

Use mulch film with a thickness of 0.01 mm. The width of the mulch film depends on the width of the ridge.

According to the sowing method, it can be divided into two types: sowing on the film and sowing under the film.

1. Sowing on film: Use corn film drip irrigation multi-functional precision seeder for sowing. The operations of laying drip irrigation tape, spraying herbicide, covering with mulching film, sowing, covering with soil and suppressing are completed at one time. The sequence of operations is laying drip irrigation tape → spraying herbicide → covering with mulching film → sowing → covering with soil → suppressing.

2. Sowing under the film: Mechanical sowing, semi-mechanical sowing and manual sowing can be used. After sowing, use a machine to spray the herbicide on the ridge, and cover it with film in time after spraying.

There should be enough soil pressed on both sides of the mulch film, and some soil should be pressed on the film every 3 to 4 meters to prevent the film from blowing up in strong wind.

When sowing under the film, attention should be paid to timely introduction and covering of seedlings: when 1 to 2 corn seedlings generally emerge, holes should be punched in time to introduce seedlings. After the seedlings are introduced, the seedling holes should be covered with wet soil.

Do it again after 3 to 5 days to draw out the late seedlings.

Strengthen field management

Drip irrigation cultivation under corn mulch should always check whether the mulch film is tight. If it is found to be damaged or the soil is not tightly pressed, it should be pressed tightly with soil in time to prevent it from being blown open by the wind. , to maintain moisture and heat preservation.

Promptly drip irrigation according to the water demand pattern of corn crops.

1. Drip irrigation: After the equipment is installed and debugged, it can be irrigated in a timely manner according to the soil moisture. Each irrigation is 1 hectare. The number of "zones" opened at one time is calculated based on the length of the capillary tube. The working pressure of the head is 2 Within the pressure, it usually takes 10 to 12 hours to fully irrigate. At that time, it can be switched to the next irrigation area.

2. Top dressing: According to the water and fertilizer requirements of corn, put fertilizer into the fertilizer applicator in proportion, and apply fertilizer with water to prevent defertilization and premature aging in the later period, and improve water and fertilizer utilization.

The amount of fertilizer for each irrigation area should be calculated, the fertilizer should be dissolved in a large container, and then the solution should be poured into the fertilizer tank.

3. Chemical control: Due to high planting density, high temperature, sufficient water, and fast plant growth, in order to prevent the plants from growing too tall and causing lodging, chemical control should be adopted during the 6 to 8 leaf unfolding stage.

4. Appropriately late harvest: In order to mature the corn, reduce water content, and improve quality, the harvest can be appropriately late according to specific conditions.

The above article introduces the details of the agricultural film drip irrigation water and fertilizer integration technology. The hot agricultural materials website has more scientific agricultural technologies. You can go and learn about it. Nowadays, technology has been quite developed. If we keep up with the pace of science and technology, the benefits created by our crops will never be able to advance.