Here we talk about how to plant potatoes, that is, potato planting technology points.
One, potato pre-sowing preparation
Selection of high-quality, disease-resistant, heat-resistant, early maturity, bud eye shallow and dormant varieties, it is appropriate to use the detoxification varieties, such as early white, Fei Urei it, etc., seed potatoes should be free of disease and insects, non-rot, no breakage.
Cutting seed, the requirement of potato about 25 grams.
The cubes should try to have the top buds, so that the emergence of seedlings neatly, at least 1 bud for each cut block.
Cutting block knife edge drying healing, placed in the dark, humid conditions germination; or in a cool, moist place to do germination bed germination, the bed first 5 cm thick sand, keep the bed soil moist; bed temperature 1620 ℃.
When the buds are 0.5 ~ 1 cm long, spread out to dry the buds; when sown in spring, the seedlings should be refined 2-3 days before sowing.
Two, potato sowing method
Sowing density general spring sowing planting density of about 4500 plants per acre, fall sowing density of 5000 plants per acre left there.
Potatoes should be implemented in the ridge, the ridge height of 30 centimeters or so, and mulch cover cultivation.
Spring sowing, the first ridge, after the ditch, ditch depth of 3-4 cm, after sowing mulch flat ridge, and then covered with mulch; fall sowing, the first flat ground to open the depth of 3~4 cm ditch, sowing seed buds along the direction of the ridge, and the bottom of the ridge parallel placement, and then mulch.
The thickness of mulch should be based on soil type, sandy soil mulch thickness of 810 cm, clay soil 6 to 8 cm, after the emergence of seedlings in a timely manner to cultivate the soil, flatten the ridge covered with mulch.
Three, potato how to fertilize
Potato is like potassium crops, each production of 1000 kg tubers need to be absorbed from the soil about 5 kg of nitrogen, phosphorus 2 kg, potassium 11 kg.
The amount of fertilizer should be based on soil nutrient analysis results, vegetable crop fertilizer law and fertilizer effect, the implementation of soil balance fertilization.
Generally per mu of high-quality rotting organic fertilizer 3000 kg, 20 kg of calcium superphosphate, potassium sulfate 25 kg.
After spreading, the ground will be raked and leveled.
Four, potato pests and diseases prevention and control of potato main diseases are early blight, late blight, scab, ring rot, soft rot, virus disease, etc.; pests are mainly potato ladybug beetles.
Mites and aphids and so on.
Agricultural control, ecological control should be used.
Biological control, physical control and chemical control combined with integrated control measures to control pests and diseases, prohibit the use of highly toxic, highly toxic, high residual chemical pesticides.