Beet drip irrigation
Beets are different from grass crops. It mainly relies on the high yield of roots, the roots are hypertrophy, the roots are developed, the water demand is high, and the biological yield is high. The physical and chemical properties of the soil are more stringent. Neutral, slightly alkaline (pH 6.5-7.5) soil should be chosen, the terrain is flat, the soil layer is deep, loose and fertile, the organic matter content is high, and irrigation and drainage are convenient.
According to the soil texture, the pipe laying method of 1 membrane or 1 membrane and 1 tube can be selected, and the seeding, pipe laying and film coating can be completed at one time. Drip irrigation pipe should be relaxed and smooth as far as possible, naturally smooth, not too tight and twisted, fixed every 3 to 5 meters of compacted soil, and then covered.
The film is required to use a film having a thickness of 0.005 to 0.008 mm and a width of 90 cm. The film should be tightly laid and flattened so that the film is close to the ridge surface, and a soil belt is pressed every 2 to 3 meters to prevent the wind from uncovering the film. Dry sowing and drying technology is adopted. Immediately after the sowing, the drip irrigation branch pipe, the spoke pipe and the linking capillary tube are arranged to ensure the normal operation of the drip irrigation pipe network. Immediately after the pipe network is set up, the water is dripped immediately. The first dripping water is determined according to the soil condition.
It is necessary to carefully check the drip irrigation belt, and find that the drip, run, and the phenomenon of the drip, timely replenishment, the drip period must be kept in check, the film surface wet printing is appropriate, to prevent water accumulation.
When the sugar beet is suitable for topdressing, when the plant grows 8 to 10 leaves, the urea and potassium sulfate to be applied are put into the fertilization tank, and the drip is combined with drip irrigation. Beet is a crop that requires more water. During the whole period of growth, it is drip-filled 3 to 5 times according to soil moisture, weather and water demand rules at different periods. Beet seedlings require less water, and in the absence of water, they should be seedlings.
The drip irrigation of the head water can promote the root system. Generally, at noon, the leaves are wilting and the night returns to normal. The optimal drip irrigation time is 4 to 6 hours per dripping time. During the accumulation of sugar, the amount of drip irrigation should be controlled. If there is too much water in the later stage, a large number of new leaves are easily formed and the sugar content is lowered. Drip irrigation should be stopped 10 to 15 days before harvest.
When most of the leaves of the beet turn yellow, the outer leaves are dead, the leaves are scattered, and the leaves are drooping and shiny, the root weight and sugar content reach the highest level and should be harvested in time. The drip tube and the branch and the auxiliary tube should be taken back and stored before harvesting, and the mulch film should be removed from the sugar beet. In order to facilitate the mechanical extraction of sugar beets, reduce pollution, so as to dig, pick up, with the cutting, with the shipment.