Buckwheat is Polygonaceae and buckwheat annual herbaceous crops. Buckwheat is a temperature-loving and humidity-loving short-day crop, but the sunshine requirements are not strict. Buckwheat can grow, flower and fruit in long or short sunshine. Buckwheat is particularly adaptable to the soil, can be planted in any soil, including poor soil unsuitable for other crops, newly reclaimed wasteland or slightly acidic soil. Buckwheat is widely distributed in China, east, south, west and north are planted, but mainly concentrated in the north, northwest, northeast and southwest. Because of the short fertility period, usually from planting to harvest only 70 ~ 80 days, early varieties can be harvested in less than two months, you can rationalize the use of natural resources, has a special status in the crop cultivation system. It can be used as the main crop in the vast dry farming areas and alpine mountainous areas where the frost-free period is short, the precipitation is small and concentrated, and the water resources cannot meet the requirements of planting large grain crops. During the frost-free period, large areas of cultivated agricultural areas can be used as replanting and recreational crops. Due to drought, flooding, hail and other natural disasters. Buckwheat is an important crop used for famine relief after the failure of major crops. Sowing of buckwheat requires not only good varieties, but also high-quality new seed. Selection of new seed full of seeds is one of the conditions of buckwheat to get strong seedlings.

Pre-sowing seed treatment is an important technical measure in buckwheat cultivation, buckwheat seedlings and high yield has a great role. Buckwheat seed treatment has several methods, such as drying seeds, seed selection, seed dipping and chemical seed mixing. The purpose is to improve the germination rate and germination potential of the seed, reduce the occurrence of certain diseases. Whether the sowing period is timely has a great impact on buckwheat yield. Select the appropriate sowing period should be based on the climatic conditions, planting systems and varieties of fertility to determine. Sowing to master the "spring buckwheat frost flowering and fruiting period to avoid high temperatures," the principle; fall buckwheat should be planted early, cooked before the frost. Spring buckwheat should be 5 cm, 12 degrees above the temperature, suitable for sowing time is generally in mid- to late June; fall buckwheat is generally sown in mid-July, the principle is to ensure that the buckwheat can be ripe before the frost.

Sowing method of sowing method and buckwheat seedlings as a whole, seedling strength and neatness has a great relationship. China's buckwheat planting area is vast, topography, soil quality, planting system, cultivation level varies greatly, so the sowing method is also different, can be summarized as strip sowing, spot sowing, sowing. Sowing uniform, easy to grasp the depth, is conducive to rational planting; sowing density is difficult to control, field management difficulties, generally low yield. Sowing amount of buckwheat seeding according to soil fertility, varieties, seed germination rate, group density to determine. Generally every 0.5 kg of seed can be 10,000 buckwheat seedlings, 37.5 ~ 45.0 kg per hectare of seeding. Sowing depth directly affects the seedling rate and neatness, is the key measure of the whole seedling. Mastery of sowing depth, you must look at the soil moisture, soil moisture should be shallow, soil moisture should be deep; second, to look at the sowing season. Spring buckwheat should be deep, summer buckwheat should be shallow; third, to see the soil quality. Sandy soil and dry land can be deeper than 6 centimeters, while the clay land is shallow, usually 4 ~ 6 centimeters.