1. Spring potatoes (major cultivation in henan, highest production)
It's a long way to go. In the second half of february, the surface is frozen and the 5 cm layer temperature is stabilized above 6°c。
Zhengzhou, xuchang, and hsien river regions: planting in late february to early march, in areas with a high incidence of cold spring, must be covered with membranes。
Sushai loyang and the three canyon mountains: low temperatures, planting delayed until early march, slow recovery of warmth and early planting。
Sunan xinyang, nanyang: the temperature rises fast and can be replanted in early february, avoiding the high temperatures of march。
The old farmer's words are true: many of the old people are rushing to grow after the spring, are still frozen beneath the earth floor, are easy to plant, are wasteful of seed, and are rather a few days late than early。
2 autumn potatoes
The province-wide unified planting window period: mid-august, one week after the fall, was the most appropriate place。
It is important to remind that the high temperature of the potatoes in the autumn is the worst, with temperatures exceeding 35° c in early august, and that the cultivation of the potatoes will not burn to death, and never before。
The harvest time: before the frost comes in november, the frost freezes the ground chips and cannot be stored for sale。
Ii. Selection of cut-off treatments for high yield bottom
Priority is given to detoxicating potato varieties, with native old potatoes growing for two consecutive years, with a high incidence of disease and a direct reduction of production by half. Disinfected potatoes can yield 40 to 60% more than an acre。
The cut-off standard: each piece with two to three buds, with a single block of about 30 grams, a small piece of potatoes without cutting, and a whole piece of potatoes sowing stronger seed。
3. Bacillus drying: cut off a layer of grass-wood ash, spread out for 12 hours, dry off the air and then down the ground to prevent disease in the earth。
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The blades of potatoes must be rinsed with white wine after they have been cut, and the whole area must be destroyed。
Three: fields are planted in practice, and distance is controlled
1. Cultivation is the key to increasing production in henan, 20 centimetres high, 25 centimetres in the ditch, drainage and flood control, and potatoes are not rotten skin。
2. Early-literate varieties range from 20 to 22 cm, with an acre planting around 4,200
The late-literated varieties are growing, with a wide range of 25-28 cm and 3,500 acre。
Experience with old farming: many farmers have a number of maps that are too crowded, with their crotch too long, and they can't produce potatoes underground。
3, 10 cm in depth, with the soil covered with white membranes, to keep the temperature warm and to produce seedlings one week in advance。
Iv. Bottom-fat mix. Farmers are the main ones
The ratio of one acre to fertilize: decomposed farmers 3000 kg + potassium sulphate 80 kg compound fertilisation, ditches in the middle, separated from seed blocks by 5 cm to avoid sprouts。
Potatoes are potassium crops, nitrogen fat cannot be spread enough, and nitrogen fattening is only long, not potatoes。
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It is strictly forbidden to use raw chicken dung, goat dung, fattening and fermenting under the ground, burning potato blocks directly; it is prohibited to use corrosive fertilizers and to store them with bitterness。
V. Management of three long-term sections to determine the quantity of potatoes
1 seeding period (around 20 days after planting)
When the membrane is released, the membrane is released in a timely manner, and the temperature is high at noon and the leaves are burnt with the membrane heat. The soil is so drenched and small that it can be humid enough to keep the earth's layer wet that it can easily rot。
2 long-term (30 days)
The seedlings grow up to 20 cm high, so that they grow once in shallow china, along with 5 cm of earth to the root, so that they can leave space for the chips under the ground, and so that the potatoes will not become green。
To be honest, many farmers ignore the ground, potatoes come out of the ground green, their skin turns green and poisonous, and they can't sell a pound。
3. Potato boom (core phase after flowering)
As soon as the potato blooms, the subsurface chips start to expand rapidly, and at this stage there is no shortage of water, the soil is humid and the water and potatoes are small and deformed。
Potassium phosphate is sprayed on the side of the leaves once in 10 days, twice in a row, doubles the rate of expansion and evens the head of the chips。
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The urea is strictly prohibited during the period of expansion, and the nitrogen-composed hysteres are grown up, their nutrients are fully supplied and the ground potatoes are thin。
Vi. Early prevention of disease and high incidence of disease in henan
Henan is the most vulnerable to the outbreak of late rainy seasons, with the presence of brown spots in the leaves being drugged and the rotation of dysen manganese zinc and frosty spraying once for seven days。
Underground pests, tigers, all of which ejected thionphos-methyl particles, pre-empted insects, prevented potatoes from being gnawed out of holes and lost their commercial value。
Vii. How to judge the maturity of potatoes and collect them on time
1. The bottom of the plant is yellow and dry, the tumblers as a whole and the subsurface potato skin becomes hard, and the harvest criteria are met。
2. The spring potatoes were harvested in mid-may and dug before the rainy season in order to avoid the soil saturating with bad potatoes; all the potatoes were harvested before the frost fell in early november。
The water was stopped a week before the harvest, the potato skin was tight and it was not decomposition。
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(b) the tundra of spring seed, etc., which avoids high temperatures
(b) rationally rare seeded species with less nitrogen application for potassium
Water is often controlled by hard-working soil and there is a high yield for early prevention of disease。
Wenmo's advice
We grow in the south of the river, we always have the first breath. Potato planting is ten days short, and the harvest is two or three kilos short. Do not plant blindly with the old impressions, adjust the planting period to local temperatures, and fertilize with science, so that families can fill their homes with potatoes。
