Autumn potato is one of the main late autumn crops used in both food and vegetables in Kaizhou, Chongqing. The planting time is often low and unstable due to the effects of high temperature and drought. Practice has proved that it is necessary to firmly grasp the "full seedling" as the center, and at the same time do the following work, the autumn potato can still produce stable and high yield. 1 Site preparation Choose sandy loess soil with deep and loose soil, good drainage and moderate fertility. After the harvest of the previous work, it is necessary to open the car in the whole zone and plant it when it is grabbed. After the planting, pay attention to clearing the ditch. It is forbidden to plant plots of crops such as Solanaceae, Ginger and Peanut within two years to prevent bacterial wilt. 2 kinds of potato selection Choose early-maturing varieties with short dormancy period, quick seedling growth, early potato production, good commercial property and anti-corrosion; choose seed potatoes with no pests, no damage, and moderate size. 3 timely seeding The biological characteristics of the potato are cool and climatic conditions, planted in the high temperature season, often encountering heavy rain, causing rotten seed lacking seedlings; autumn potato growth period is only 80-90d, sowing too early and so on will affect the yield. It is necessary to seize the "preservation seedlings". In the timely broadcast period, the daily average temperature is generally stable below 25 °C, and it is planted in the summer until the white dew is planted (in the case of extreme high temperature in autumn, it can be planted below 30 °C). According to the local climatic data and farming experience for many years, the Pingba area is about mid-September, that is, before and after Bailu; the deep hills and half-mountain can be 7 to 10 days ahead of schedule, that is, it is appropriate to plant before and after the autumn. When planting, avoid the hot weather at noon on sunny days. It should be carried out before 10 o'clock in the morning or after 5 o'clock in the morning on cloudy or sunny days. The sowing depth should be properly spread than the spring potato, and it should be moistened and cooled with the cover soil. Emergence. 3 with buds Different varieties of potatoes have different dormancy periods, and it is necessary to determine the treatment methods of seed potatoes according to different regions. In the Pingba area, the spring leaves are used for autumn. When they are planted, they have passed the dormant period. Most of them have been germinated. It is suitable to plant whole potatoes. In the middle of the mountain, the spring leaves are kept in autumn, and they are not directly sown during the dormant period. Before germination, it is necessary to carry out germination treatment to break the dormancy period, in order to promote the early emergence of seedlings, and the seedlings are strong; in the middle of the mountain, the spring potato can be transferred from the Pingba area to the autumn, and the seedlings can be harvested quickly. Increase production results. Germination method: Select the air-cooled, low-temperature room about 10d before sowing, spread the wet sand 3~7cm thick, layer cover, pile up three or four layers, and cover the wet sand about 7~10cm (the humidity of the sand) It is advisable to knead the dough into a group, and open it to cover the straw or the agricultural film to keep moisture. Pour the cold water once a day to keep the bed soil moist, but prevent the humidity from being too large and cause rotten seeds. If one thousandth of potassium permanganate is soaked for 30 minutes before germination, the effect is better. When the bud grows to 1cm, it can be sown in the cool place for 2 to 3 days in the outdoor shade, and the small whole potato will be broadcast live. 4 Reasonable close planting The planting density is slightly larger than that of the spring potato. The slope of the slope (dry land) is 17.5cm × 33.3cm. The paddy field and the low-lying land are ridged and densely planted. The ridge is 90cm and the ridge is 40cm, and the latitude is 20cm. 5 early management During the emergence period, after heavy rain, shallow soil should be ploughed to prevent soil compaction. On the basis of re-application of base fertilizer (1,500 to 1 750 kg of farmyard manure per 667 m2) and application of phosphorus and potassium fertilizer (40 kg of compound fertilizer per 667 m2), combined with cultivating and weeding and early topdressing (each 667m2 is applied with urea 3~3.5kg point nest); according to the seedling condition, before the bud, the root can be sprayed with 0.5% urea + 0.3% potassium dihydrogen phosphate solution for 1~2 times to promote tuber formation and swelling. Achieve high yield results. In the later period, the epidemic disease was carefully prevented, and the central diseased plants were immediately removed and destroyed. At the same time, the water solution was sprayed with 1:1:200 Bordeaux mixture or mancozeb for 2~3 times (once every 7 days); Cypermethrin has a good effect on water spray. 6 timely harvest In order to ensure that the autumn potato has sufficient growth period and capture high yield, it is generally harvested before the early frost comes, until the whole stems and leaves are yellowed and withered. The above is the whole content compiled by Xiaobian for everyone today. Welcome the potato growers to come to Huinong.com for reference! Fresh Half Shell Mussel Meat,Half Shell Mussel Meat,Frozen Cooked Mussel Meat,Frozen Mussel Shengsi Huali Aquatic Products Co.,Ltd , https://www.mytilus-edulis.com
