Techniques and methods of tobacco planting What are the techniques and methods of tobacco planting?

1. After transplanting flue-cured tobacco, with the growth and development of tobacco plants, the absorption of nutrients also increased. After the seedlings survive, topdressing should be done in time to promote the early growth and rapid development of tobacco plants. In order to effectively improve the utilization rate of fertilizer, topdressing advocates water irrigation, drip irrigation and topdressing, and spraying water and fertilizer on leaves according to the nutritional status of tobacco plants in the middle and late stage to balance nutrition.

2. Top dressing with water: Top dressing accounts for 60%-70% of the total fertilization amount, and it is applied in 2-3 times within 45 days after transplanting. Top dressing is carried out for the first time 7- 10 days after transplanting, and 5-8kg of nitrogen, potassium fertilizer or potassium nitrate is added to each mu; Topdressing for the second time/0/5-20 days after transplanting, and adding 8-/0/0 kg of nitrogen, potassium fertilizer or ternary compound fertilizer per mu; The third topdressing is carried out 35-45 days after transplanting, and the remaining fertilizer is poured thoroughly with water after uncovering the film. Tobacco plants are short of nitrogen in the middle and late stage, and 5- 10 kg of tobacco special fertilizer or potassium nitrate is poured per mu.

3, drip irrigation topdressing: drip irrigation topdressing, a small number of times, one side at a time. The amount of fertilization by drip irrigation is 50%-70% of that by conventional fertilization. Generally drip irrigation is about 7 times.

(1) The first fertilization was carried out 7- 10 days after transplanting, and the fertilizer type was ternary mixed water-soluble fertilizer or nitrogen and potassium topdressing, the dosage was 3-4kg/ mu, and the fertilizer concentration was 0.1%-0.2%;

(2) fertilizing for the second time on the 14- 17 day after transplanting, wherein the fertilizer type is ternary mixed water-soluble fertilizer or nitrogen and potassium topdressing, the dosage is 3-4kg/mu, and the fertilizer concentration is 0.1%-0.2%;

(3) fertilizing for the third time 2 1-24 days after transplanting, wherein the fertilizer type is ternary mixed water-soluble fertilizer, the dosage is 4-5 kg/mu, and the fertilizer concentration is 0.3%-0.5%;

(4) fertilizing for the fourth time 28-3 1 day after transplanting, wherein the fertilizer type is ternary mixed water-soluble fertilizer, the dosage is 4-5 kg/mu, and the fertilizer concentration is 0.3%-0.5%;

(5) fertilizing for the fifth time 35-38 days after transplanting, wherein the fertilizer type is ternary mixed water-soluble fertilizer, the dosage is 4-5 kg/mu, and the fertilizer concentration is 0.3%-0.5%;

(6) The sixth fertilization is carried out 42-45 days after transplanting, and the fertilizer type is ternary mixed water-soluble fertilizer, the dosage is 4-5 kg/mu, and the fertilizer concentration is 0.3%-0.5%;

(7) The seventh fertilizer drip is carried out 49-52 days after transplanting, and the fertilizer type is ternary mixed water-soluble fertilizer or water-soluble potassium fertilizer, the dosage is 4-5 kg/mu, and the fertilizer concentration is 0.3%-0.5%. Drip irrigation fertilization, drip irrigation for 5- 10 minutes first, and then drip irrigation fertilization. After dropping the fertilizer, drop water 10- 15 minutes.

4, foliar spraying

(1) In the middle and late stage, according to the nutritional status of tobacco plants, in line with the principle of "supplementing what is lacking", foliar topdressing was adopted to balance nutrition.

(2) Potassium deficiency: per mu 1-2kg potassium sulfate is mixed with water and sprayed on the leaves, and the spraying concentration is 2%-4%.

(3) Magnesium deficiency: 1-2 times, spraying 0.5 kg of magnesium sulfate per mu with water, and the spraying concentration is 0.3%-0.5%.

(4) Boron deficiency: Spraying 0. 1%-0.2% borax solution 1-2 times on the leaves, or mixing 0.5 kg borax with other fertilizers per mu.

(5) Molybdenum deficiency: spraying 0. 1% ammonium molybdate on the leaves, and spraying 1-2 times.

(6) Zinc deficiency: spraying 0. 1%-0.2% zinc sulfate on the leaves, and spraying 1-2 times.

5. The above are the techniques and methods of tobacco planting.