1. Selecting good varieties: At present, the varieties popularized in the second quarter of the central and southern provinces of our province include Feiwuruiting and Zaodaibai, etc., which can be harvested 60 to 70 days after emergence. Mu use 125 ~ 150 kg.

2. Apply base fertilizer adequately. Fine soil preparation: The planting of potatoes should be done in sandy loam soil or in soil, and deep plowing should be done before winter. Apply enough base fertilizer before sowing, generally 5000 kg of fertilizer applied in Mushi, 30-50 kg of diammonium phosphate, and 30 kg of Spokane. When the soil moisture content is insufficient, the soil should be desecrated in time and the cultivated land should be leveled off.

3. Preservation of seed potatoes and treatment before sowing: Potatoes can be germinated without germination, directly after cutting and can also be sowed after germination. The germination can be divided into 10 to 15 days before sowing, and the seed potatoes are cut into buds and eyes, and each piece should have 1 to 2 buds. After cutting, the cuttings are dried and then sown. It is also possible to germinate in a greenhouse or in a warm place, or to sow seeds after accumulating germination with sandy soil. With sandy soil accumulative germination, that is, about 60% of the sandy soil containing water, a layer of potato layer of sand soil, stacked in the sunny place under the northern wall, the top covered with sand, and then covered with plastic film. When the buds are 0.5 to 1 cm long, they are allowed to dry in the sun for half a day, so that the buds turn green and ready for sowing.

4. Appropriate sowing: Potatoes are cold and cool and can germinate when the ground temperature is 4°C. Normal ground temperature of 10 cm in the early spring can be sown at 5°C～7°C. The open field planting shall be based on the date of the local frost break and push forward for 30 to 40 days as the seeding period criterion. The mulching in the south-central part of the province was planted in the middle and early March. During the suitable sowing period, sowing should be carried out as far as possible. The morning market can be provided for the off-season market and the benefits can be improved.

5. Appropriate deep seeding, suitable for close planting: Planting can be done according to the spacing of 66 to 70 centimeters and 18 to 20 centimeters, and can also be planted by size, planting by row spacing, or planting in ridges, and covering the soil by 3 inches after sowing. Mu 5000 ~ 6000 points is appropriate.

6. Emergence management: about one month after sowing, seedlings emerge, and when the weather is fine, the seedlings can be ventilated near the seedlings when the weather is fine. When seedlings grow, the seedlings can be taken out from the mulching film, and the seedlings can be released when the weather is cloudy. .

7. Cultivated soil: After the seedlings are in full bloom, the soil shall be removed timely in accordance with the weather conditions, and the soil shall be cultivated for 2 or 3 times in combination with the alfalfa grass.

8. Watering and fertilizing: Control seedlings at the seedling stage, when the seedlings appear prosperous, spraying B9 or chlormequat and so on. Into the expansion period of potato wedges (beginning budding stage) began to water top dressing, each topdressing urea 10 ~ 15 kg, potassium sulfate 3 ~ 5 kg, top dressing 2 to 3 times. Can also be applied or hole planting ash. Potatoes are chlorine crops. Do not use chlorinated fertilizers.

9. Diseases and pests control: During the growing season, they are vulnerable to aphids and can be sprayed with dimethoate; other pests, such as potato stem moths, ladybugs, etc., are treated with 50% trichlorfon 800 times solution or 50% dichlorvos emulsion 1000 times solution. Prevention. Late blight is prone to occur in the middle and late stages, and 1:2:200 (copper sulfate:lime:water) Bordeaux mixture can be used for early prevention and treatment at the early stage of disease, and field management inspections are strengthened. The central diseased plant is immediately removed to prevent the spread of disease. Chemical control: Mancozeb 1000 times or 75% chlorothalonil 600 to 800 times. Should also pay attention to the prevention and treatment of viral diseases, prevention and control should be selected disease-free potato species, timely control of locusts to prevent the spread of the virus, found that diseased plants in a timely manner to remove the destruction, field attention to crop rotation.

10. Harvest: General film covering cultivation The harvest from the end of May to the beginning of June, generally about 2000 kilograms per mu, can also be harvested after mid-June harvest in June, yields 2500 to 3000 kilograms. Can be harvested one after another in succession, can also focus on harvesting concentrated market.

Ranaconitine

Natural Ranaconitine,Ranaconitine Powder,Cas 1360-76-5,Ranaconi Tine

Shaanxi The River Pharmaceutical Co., Ltd. , https://www.dahepharma.com