Introduction of High-yield cultivation techniques of Potato

Potato, Solanaceae, annual herbs, also known as eggs, potatoes, potatoes and so on. Potatoes can be used not only as a vegetable, but also as a staple food, but also can be processed into French fries, the taste is very delicious. Potatoes are planted in many parts of our country. Let's take a look at the key points of potato high-yield cultivation techniques.

1. Soil selection

Should choose soil fertile sandy loam and mixed soil planting, in the previous harvest, timely stubble ploughing, ploughing about 30em, and combined with soil preparation, generally applied organic fertilizer per mu of about 5000 kg, phosphate fertilizer 25 Mel 50 kg or diammonium phosphate 50 kg, before sowing, should be 70-80em wide. The ridge is waiting for sowing.

2. Slicing before sowing to promote sprouting and cutting

It is appropriate to cut 50 yuan per kilogram of seed potatoes. When cutting pieces, first cut longitudinally, then cross-cut, the size of the pieces is required to be uniform, and each piece has 1 Mel 2 buds. The cut potato pieces should be washed several times with well water, then soak the seeds with 1000 times agricultural streptomycin for 15 minutes with 50% carbendazim solution, and then remove the cold dry (preferably within 2 hours) to germinate. Sprouting: when sprouting in spring, as the dormant period of potatoes has passed, you only need to raise the temperature. About 20 days before sowing, the cut and soaked potato pieces are buried in the moist sand to germinate. The temperature is kept at about 15 °. When the buds grow to 2em, you can sow seeds.

3. Sowing time and density

Planting in spring, sowing from the end of February to the first ten days of March, harvesting from the end of May to the middle of June, using plastic film mulching when sowing, adopting the way of row spacing 60cm, plant spacing 25cm, or row spacing 70cm, plant spacing 20em, it is suitable to keep the density at 4000m / mu.

4. Scientific fertilization

The absorption ratio of nitrogen, phosphorus and potassium in potato was 2:1:4, and the absorption of potassium was the highest. If the yield of potato covered with plastic film is more than 5000 jin, 6000 jin of organic fertilizer, 20 jin of pure nitrogen, 8 jin of pure phosphorus and 25 jin of pure potassium should be applied.

Potato tuber expansion period is the period that absorbs the most nutrients, accounting for about 50% of the whole growth period, 25% in seedling stage and 25% in late stage.

Topdressing should be early rather than late, generally in the budding stage, apply less nitrogen fertilizer to avoid overgrowth. Irrigate fertilizer with water in an Israeli farmer's garden.

5. Straw mulching

Immediately after potato sowing and fertilization, 2.5 mu of rice straw was used to cover the whole box surface evenly according to the method that the straw was perpendicular to the box ditch and the tip of the grass was to the tip of the grass, and the thickness of the grass was 3-4 inches, so as to prevent the seed potato from sunlight.

6. Pest control

If there is any pest damage, it should be sprayed in time. At the same time, cooperate with spraying new high fat membrane to improve the utilization rate of effective components and consolidate the control effect.

7. Harvest

In mid-late April and early May, it can be harvested in time according to the market situation. After harvest, rapid testing of pesticide residues was carried out, and after qualified, arrangements were made for listing. Products can directly enter the market or thermostat storage.