The potato cultivated on double ridges is popular among farmers because of its disease-free, high yield increase, good potato shape and high commodity rate. Therefore, the cultivation of double ridge sorghum has become a technical measure widely adopted by the Xuanwei farmers.
The characteristics of the potato â€œdouble ridge and high sorghumâ€ cultivation are the optimization and integration of improved varieties, good methods and a good growth environment; the purpose is to increase the potato yield and commodity rate and increase the income of farmers; the core of technology is â€œsix changesâ€, that is: Use more, poor, and miscellaneous varieties for application-oriented fine varieties, and second, change corn and potatoes for interplanting into pure-bred potatoes, third, change the way of planting stars for double ridge sorghum cultivation, and fourth, change to one-time cultivating ridge and ridge cultivation. Three times of cultivating soil, five is to change nitrogen fertilizer for the balance of soil testing formula fertilization (mainly phosphorus, potash fertilizer), six is â€‹â€‹to change the management of the first release of the field for the fine management (emphasis is timely irrigation, pest control, top cap picking flowers).
First, choose the plots to choose a deep plowing layer, soil loose, good light, irrigation and drainage, medium or medium and high fertility plots. It should not be used in conjunction with solanaceous crops to avoid cross-contamination of diseases. Select a plot with a thick layer of tillage, loose soil, good light, convenient drainage and irrigation, medium or medium-upper fertility. It should not be used in conjunction with solanaceous crops to avoid cross-contamination of diseases.
Second, the finely-ground land for planting potatoes must be deep plowed and finely chopped before the winter to loosen the soil and improve the ability of the soil to retain water and fertility. The land on which potatoes are planted is subjected to deep plowing and fine crushing before the winter to loosen the soil and improve the soil's ability to store water and retain fertilizer.
Third, rational close planting, improve planting quality and specifications According to species characteristics and soil fertility generally use 1.2-1.3 meters sowing amplitude, that is, 0.8 meters large row, small row 0.4 meters. The pond is 0.3 meters away, and 3000-3500 ponds are sown. Sowing requires deep, straight and even. That is, deep plow, deep seed, deep cover soil, sowing depth of 25 centimeters, when the seeds of the main bud part of the seed towards the plow bottom. According to the variety characteristics and soil fertility generally use 1.2-1.3 meters sowing amplitude, namely big line 0.8 meters, small line 0.4 meters. The pond is 0.3 meters away, and 3000-3500 ponds are sown. Sowing requires deep, straight and even. That is, deep plow, deep seed, deep cover soil, sowing depth of 25 centimeters, when the seeds of the main bud part of the seed towards the plow bottom.
Fourth, rational fertilization one-time application of base fertilizer. The base fertilizer is mainly applied to agricultural fertilizers for manure and potato, and 1500 to 2500 kilograms of manure is applied per acre, and 60 to 80 kilograms of fertilizer for soil testing or special fertilizer for potatoes is used.
Fifth, cultivating and cultivating double-ridge sorghum cultivation, and cultivating management is the key. After the emergence of potatoes, weeding should be done in time. About one month after emergence, the first cultivating, weeding and earth-cultivation were carried out. One part of the soil in the blank line was cultivated on the potato line. A month or so later, a second cultivator, weeding and earth-cultivation were performed. On the planting line, the alfalfa height is 0.2-0.3 m, so that the alfalfa surface forms a ridge, and the empty rows form a ditch. When the spring drought occurs, it is favorable for irrigation, and when the summer rainfall is concentrated, it is favorable for drainage. In general, the plough is harvested for 2 to 3 times to really reach deeper and deeper cover, so as to ensure the nutrients and moisture needed for potato growth, so that the potato pods are all buried deep in the soil to increase the amount of tuber and increase the yield.
Sixth, pick flowers to buds For the strong varieties of berry, after the bud emergence of the potato, we must promptly remove buds in order to avoid nutrient consumption caused by the flowering results, to ensure the supply of nutrients in the potato block.
VII. Disease prevention and control The greatest disease of potato is late blight, which can be controlled by drugs. The use of metalaxyl manganese zinc or Lei Duomi 400 to 600 times the liquid, 100 grams per acre watered 50 kg of water for field spray. The first medication was in the bud stage of the artichoke, and the second medication interval was 15 to 18 days. Pesticides should be used interchangeably to avoid drug resistance.
VIII. When harvested potatoes are harvested in due time, they should be harvested in time to avoid unnecessary losses due to underground pests and flooding. Small spring potatoes are generally harvested in April-May, big spring potatoes are harvested in August-September, and autumn potatoes are harvested in December. Potatoes and potatoes can also be harvested according to market conditions and potato size. When harvesting, try to avoid mechanical damage, remove diseases, rotten, wounds, deformed potatoes, prevent potato chips from being exposed to rain or prolonged exposure to the sun, and store or store them in grades in a timely manner. Heilongjiang Land Reclamation Bureau Li Hong provided
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