1. Timely cultivating and weeding.
2. Reasonable irrigation. Irrigation conditions should be carried out in the flowering stage of the potato and in the tuber expansion period for 3 to 4 times. Pay attention to the irrigation of the ridge and ridge to prevent flooding of the large water, so that the irrigation water is not ridge, the soil water content should be kept at 60%--80%. The tuber is formed in an appropriate amount during watering. In areas with heavy rain or seasons, timely drainage, there is no water in the field.
3. Do a good job in pest control. Pay attention to the prevention and control of potato early blight, late blight, ring rot, black shank, mosaic virus disease, leaf rolling disease, bacterial wilt and black shank caused by Rhizoctonia solani. (1) Late blight. The central diseased plant was found, and all the roots and potato pieces were dug out, and the soil was buried deep in the field. The diseased holes were lime-disinfected, and the drugs such as metalaxyl manganese or zinc dew were sprayed within 50 meters around the diseased plants to block the control. Spray again 10 times in 10 days. General control should be carried out from late July to August, using 64% anti-bacterial WP WP, 72% ke WP or 58% Metalaxe Mn-Wet WP or 80% Bideley for each acre. 100 grams of hydrated powder, evenly sprayed with 50-60 kg of water. According to rainfall and air humidity, control every 7-10 days. Alternate spray of methylaminopropionate (25% amisin acre 30--40 ml to 50 kg of water), second spray of 800 times solution of 72.2% carbendazim, third time In the case of spraying silver, the amount of silver is 60--75 ml, 50 kg for water, or 53-100 g of gold leidom. The spray is usually applied 3 times. (2) Bacterial diseases such as bacterial wilt can use 72% agricultural streptomycin sulfate soluble powder 20 million international units (equivalent to 20 grams), 50--70 kg spray prevention for water; ring rot, early blight and other diseases can be Mu with silver method 60--75 ml, 50--70 kg for water, 25--40 ml for 25% amishida, spray against 50 kg of water. (3) Pests. To control pests such as aphids and whiteflies, 25 grams of 5% anti-Citrus wettable powder, 10-20 grams of 10% imidacloprid wettable powder, or 10-25 ml of 20% fenvalerate EC. For water 50--70 kg spray, use alternately. In the underground pests, tigers, golden worms, crickets, crickets, etc. have serious fields. When loosening soil, use 1% trichlorfon 3 kg, add fine soil 10 kg, sprinkle in furrows, or 0.38% matrine. Emulsified 500 times solution, or 40% phoxim emulsifiable concentrate 1500 times solution.
4. Harvest at the right time. The potato growth period is about 120 days. When the upper stems and leaves are basically yellow and the tubers are easy to separate, they are harvested on sunny days. If the late blight is infested but not too serious, it is best to remove the diseased mites and clear out the field before harvest to prevent the potato pieces from coming into contact with the infection. After harvesting, the potato pieces can be properly exposed to make the wound heal and timely stored or stored.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Hcg Pregnancy,Beta Hcg Test,Hcg Levels,Hcg Hormone
Weihai Kangzhou Biotechnology Engineering Co.,Ltd , https://www.weihaikangzhou.com