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The selection of varieties currently promotes the production of potato varieties such as Zhangshu 8 and Feiwuruitiao and Shapoti.
The choice of land, trenching, and ridged potatoes are not suitable for continuous cropping. Potato high-yielding cultivation techniques are suitable for crop rotations such as pulses and cereals. It is advisable to choose sandy loam or tidal mud fields with fertile soil, deep soil layer, loose structure, good drainage and irrigation conditions, and strong water retention and fertility conservation. After the ploughing, the land will be leveled in a timely manner so that the soil, land, and foot can be achieved. It is required that the car be leveled and finely finished, and the ditch and cross ditch should be opened to facilitate drainage and stain prevention. When ridging, the ridge width should be 60-66 centimeters, the ridge height should be about 20 centimeters, and the line spacing should be 90 centimeters.
Before planting seeds, seed potatoes should be selected strictly, and diseased potatoes and rotten potatoes should be removed. Seed potatoes must be complete, no pests, no frost damage, and the potato skin is smooth and fresh in color. The large seed potatoes are cut into pieces, and 75% alcohol or potassium permanganate solution is used to disinfect the cutters and diseased potatoes to prevent virus (bacteria) infection. Each seed potato should have 1-2 robust shoots, and use the top buds as much as possible, each weighing 25-50 grams. Cuts should be accompanied by sowing, with about 150 kg of mu.
Grasp the seeding method and density of 33-36 cm spacing, 90 cm spacing, sowing a seed potato that promotes buds per hole. After sowing, cover the soil with a seed tube and flatten the ridge. The thickness of the cover soil is about 8 centimeters, and the overburdened soil is too shallow. The knotted potato will be exposed to green and affect the quality. Excessive soil thickness will delay emergence and affect yield. The general planting density is about 3,000 Zhangchangshu 8/mu, Feiwurui 5000/mu, and Xipoti 4500/mu.
Applying phytofertilizer in general applies 1500-3000 kg of organic manure, 30-40 kg of phosphate fertilizer, 200 kg of plant ash or 20 kg of potassium sulphate per acre. At the time of sowing, for example, 1000 kg of human or animal urine per acre or 15 kg of nitrogen fertilizer can be used as a seed fertilizer to make the seedlings quickly and neatly and robustly.
Timely Topdressing In addition to co-cultivation and weed control, temperature management and water management (methods are the same as conventional cultivation), topdressing of potato tubers should be carried out in the early stage, and 10 kg of urea and 15 kg of potassium sulfate should be topdressed. It is also possible to spray 50 kg of water with 2% urea solution or 0.2-0.3 kg of potassium dihydrogen phosphate.
Prevention and control of pests and diseases The main disease of potato is late blight disease. If the rainfall is too high, the plants will be severely affected before and after the flowering period. It is found that the diseased plants can be sprayed with Jinleiduomier, Kelu, etc., and the central diseased plants can be removed and applied every 7-10 days thereafter. 1 time. The use of chlorpyrifos particles in field pests was found in the presence of earthworms such as earthworms and ground tigers. Infestation with locusts was possible by spraying 20% ​​deltamethrin 10-15 ml/mu with 50 kg of water.
The timely harvest of potato plants withered, most of the stems and leaves become yellow, tubers stop expanding when it is the best harvest.
The ridging high-yield cultivation is based on deep-sown, ridging, deep fertilization and reasonable close planting techniques to integrate and integrate the potato cultivation measures, which increase production by more than 15% compared with conventional cultivation and increase the commodity rate of qualified potatoes by more than 20%. The technical points are now described as follows: