Detailed Explanation of High-Yield Potato Planting Techniques and Management Methods

The ultimate goal of any crop cultivation is to achieve high quality and high yield. Potato cultivation is an industry that has gone through a long history of development. With the progress of the times and the continuous advancement of agricultural science and technology, potato planting techniques are also constantly improving.

High-Yield Potato Planting Techniques

1. Select good varieties and use virus-free seed potatoes. Choose early-maturing varieties that tuberize early, have fast tuber expansion, a short dormancy period, high yield, good quality and disease resistance, such as Holland 15, Luyin No. 1, Holland 7 and other Favorita series varieties, and use virus-free Kee 2 and Kee 3 good varieties.

2. Cut seed pieces and sprout them to ensure a full stand. Cutting seed pieces and sprouting requires about 150 kg of seed potatoes per mu. 20 to 25 days before sowing, place the seed potatoes in a warm, sunny place to sun them for 2 to 3 days, while removing diseased and rotten potatoes, then cut them into pieces. When cutting, make full use of apical dominance, cutting diagonally toward the top in a spiral manner, and finally divide in two or in four according to the apical bud, with each seed piece retaining 1 to 2 eyes and weighing 25 to 30 grams. After the cut surfaces dry, place them indoors at 18 to 20 degrees C using the stratification method to sprout. When the sprouts grow to about 2 cm, place them under diffused light to air and dry, and sow after the sprouts turn green and thicken.

3. Treat seeds with chemicals to prevent pests and diseases. Mix 50 grams of iprodione 50% suspension concentrate with 20 ml of Gaucho 60% suspension seed coating agent into 1 liter of water, shake well, then spray onto 100 kg of cut seed potatoes, and sow after drying to prevent seedling-stage pests and diseases and ensure uniform and strong seedlings.

4. Use double-film coverage and sow at the right time. In Shandong, generally in the sunny mornings from late January to early February, single-ridge double-row planting is carried out inside large arched sheds. Using small arched sheds inside large arched sheds can further advance the market date. The ridge spacing is 80 cm, with two rows planted, plant spacing 25 to 30 cm, and 5500 to 6000 plants per mu. When planting, open furrows 8 to 10 cm deep and 20 cm wide. Apply seed fertilizer and chemicals for controlling underground pests, mix evenly with soil, water, then plant at a slanting angle with sprouts facing upward, first cover the sprouts with a small amount of fine soil, then cover with soil and form ridges about 15 cm high, rake the ridge surface flat, spray herbicide, and then cover with 90 cm wide plastic film.

5. Soil testing and formula fertilization for balanced nutrition. Adopt soil testing and formula fertilization techniques, and make a fertilization plan according to the target yield. Generally, apply 5000 kg of farmyard manure or 150 kg of commercial organic fertilizer per mu, 180 kg of nitrogen-phosphorus-potassium compound fertilizer (15-10-20), 1 to 2 kg of zinc sulfate, and 1 kg of boric acid. Farmyard manure is spread when plowing, and other fertilizers are applied in holes at sowing.

Potato Management Methods

1. Check seedlings and fill gaps: After potatoes emerge fully, check the seedlings promptly and fill gaps promptly where seedlings are missing to ensure a full stand. At sowing, densely plant surplus seed pieces at the edges of fields for filling gaps. When filling gaps, if there are diseased or rotten potatoes in the missing hills, first dig out the diseased potatoes and the surrounding soil before replanting. When the soil is dry, dig holes, water them, and apply a small amount of fertilizer before transplanting seedlings, to reduce the time needed for seedling recovery and restore growth as quickly as possible.

2. Cultivate and earth up: Cultivating and loosening the soil makes the tuber-bearing soil layer loose and airy, which helps root growth, stolon elongation and tuber expansion. If the soil surface crusts before emergence, loosen the soil to help emergence. After full emergence, carry out the first cultivation promptly to a depth of 8 to 10 cm, combined with weeding. 10 to 15 days after the first cultivation, carry out the second cultivation, which should be slightly shallower. At budding, carry out the third cultivation, shallower than the second.

3. Topdress at the right time: Potatoes take a long time from sowing to emergence. After emergence, apply sprout and seedling fertilizer early with clear manure water plus a small amount of nitrogen fertilizer to promote rapid seedling growth. At the budding stage, combine with earthing up and topdress once with tuber-setting fertilizer, mainly potassium fertilizer together with nitrogen fertilizer, with the amount depending on plant growth. After flowering, generally no more fertilizer is applied. If nutrient deficiency and premature aging appear later, phosphorus and potassium or combined trace elements can be sprayed on the leaves.

4. Pest and disease control: Common potato diseases include viral diseases, late blight, bacterial wilt, ring rot, scab, and wart disease. For late blight, use Bordeaux mixture or ridomil for early control. Bacterial wilt is mainly controlled through reasonable crop rotation, selection of disease-resistant varieties, and using small whole tubers as seed. Main pests include ladybirds, cutworms, aphids, white grubs, and mole crickets, which can be controlled with chemicals or manual capture.

5. Harvest at the right time: When potato plants stop growing and most stems and leaves turn yellow and withered, the tubers separate easily from the stolons, the periderm hardens, specific gravity increases, and dry matter content reaches its maximum. This is the optimum harvest time for table tubers. For seed tubers, harvest 5 to 7 days earlier to reduce the adverse effects of high temperatures in the late growth period and improve seed characteristics.

Analysis of Potato Planting Costs and Benefits

The cost of planting one mu of potatoes is about 2500 yuan, of which investment in agricultural materials such as chemicals, fertilizer and water is a little over 1000 yuan, and fuel, depreciation, maintenance and labor for agricultural machinery are also about 1000 yuan, with land rent at three to four hundred. So the cost is about 2500. Conservatively estimating potato yield at three tons, that is 6000 jin, as long as the price is not lower than 4 mao per jin (2400 yuan), there will basically be no loss. If it is exactly 6 mao per jin, earning 2 mao per jin, 6000 jin earns 1200. If local land is easy to find and scale can be achieved, and 1000 mu can be planted, earning 1200 per mu per year means 1000 mu can earn 1.2 million yuan per year.

Potato Storage

1. Put potatoes in bags and place them in a cellar. As long as temperature and humidity are moderate, they can be stored for at least 3 months.

2. Store potatoes together with apples or banana peels in a box. The ethylene gas released by apples or banana peels can keep potatoes fresh.

3. Put potatoes into burlap sacks or baskets, bury them with blighted grain or sand, and press firmly. Cover the top with plastic bags or some waste paper.

4. Remove the roots from dug potatoes and wash them clean. Bury them in sandy soil, then press the sandy soil firmly so air cannot pass through. Dig them out when eating.

In this era when potato planting offers certain profits, planting techniques are an important means for growers to profit. High-yield potato planting techniques can effectively increase potato planting yields, and good field management is an effective guarantee of potato yield and quality. Therefore, these are all things growers need to understand and learn.