The autumnal potato is one of the main late autumn crops in southern Sichuan, and it is also a late autumn crop with a high commodity rate. A few days ago, Zhang Jianhua, a senior agronomist at Baijie Town, Naxi District, Bozhou City, guided the cultivation of Qiu Yangchao in the area of ​​Liu Sihua, a group of villagers in Yushui Village of the town. “Using rice straw to cover the autumn yam will not only save labor, time, and cost, but also have important implications for increasing soil organic matter, improving soil structure, and fertility.â€
Open a good three-channel standard whole field
Immediately after rice is harvested, the rice field is pulled in the direction of drainage and no tillage is performed to open the trench. According to 2 ~ 2.2 meters for the ditch for the car, the car is 1.8 to 2 meters wide, 0.2 meters wide and 0.2 to 0.3 meters deep. Open trenches around the fields, with a width of 0.25 meters and a depth of 0.3-0.4 meters. Daejeon should also open a main ditch. Ditch the mud from the ditch and evenly pave the car, and make the car level consistent.
Select seed soaking
The early-ripening varieties such as yamzai 1, chuanxiong 4, zhongshu 3, and feiwuruitu were selected as the detoxified seed potatoes. It is better to plant whole potatoes with about 30 grams of small seed potatoes. The large seed potatoes should be cut first to ensure that each cutting has 1 to 2 robust shoots, each weighing more than 30 grams, and using 1 kg of 70% methyltoluene. Bujina 0.5 kg 72% of agricultural streptomycin plus 25 kg of talcum powder, mix 2 kg of mixed medicine for every 50 kg of seed potatoes, prevent seed rot.
Timely application of base fertilizer
When the rice is harvested on the same day or the next day, when the straw is still dry, the sowing date is generally good when the daily average temperature is stable below 25°C. According to the width of 60 cm, a narrow line of 20 cm, a nest of 20 cm, acres of 8000 nests. Mushi 45% compound fertilizer 50 kilograms spread into 10 cm wide fertilizer belts at the center of wide rows; or 1500 to 2000 kilograms of organic fertilizers in Mushi, 10 to 15 kilograms of urea, 25 to 30 kilograms of superphosphate, and 100 kilograms of plant ash. The full flowering period was sprayed with 0.5% potassium dihydrogen phosphate solution for 2 to 3 times for top dressing.
Cover the straw to moisturize buds. After spreading the fertilizer, sow 8 to 10 centimeters thick rice straw (covered with straw of 2 acres of paddy field) and cover the entire car surface evenly as straw and car vertical and grass tip to grass tip. Soil cover is pressed around the surface of the car to prevent the green potato from being exposed to sunlight. In case of high-temperature weather, it is necessary to spray moisturizer sooner or later to avoid burning buds.
Seedling survival early tube fine tube
After the seedlings were unearthed, 5-8 kg of urea was used to raise the seedlings to promote the growth of the whole seedlings and strong seedlings. If there are low-lying areas, poorly drained potato fields should be drained by clear channels to prevent accumulation of stagnant water in the fields. To timely prevent late blight, bacterial wilt, ring rot, virus disease and aphid, cockroach and other pests and diseases, early detection, early removal, early prevention and treatment, use of 72% Kelu wettable powder 600 times or 50% Fu Shuai Suspension 2500 times spray control. The 28-spot ladybug is sprayed with 2.5% deltamethrin EC 3000x.
More than 70% of the straw-covered potato blocks are on the surface of the soil and can be picked by picking up the straw; it can also be harvested in stages, that is, the rice straw can be used to harvest and grow the grown potato, and then the straw can be covered to make the small potato block. Continue to grow. This will ensure higher production and improve overall economic efficiency.
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