1. Selection Regardless of the kind of crops, further selection and treatment of seeds prior to sowing is one of the measures to improve seed quality and guarantee seedlings and seedlings. Buckwheat is a panicle, between spikelet and spikelet, the development between grains and grains is very uneven, so the selection of buckwheat is very important. Buckwheat seed selection should be selected by wind or screening, select large and full of seeds for sowing.
To use good varieties, we must proceed from the local natural conditions and adapt them to local conditions. Generally high water and fertilizer land and wetland, water and fertilizer varieties should be selected, is conducive to lodging; hilly areas, should generally use drought-resistant, cold late varieties. The selection of varieties should also be done well with varieties and selection of two or three fine varieties with different ripening periods in order to adjust labor and animal power, and at the same time avoid the loss caused by single varieties.
2. The purpose of drying seeds for drying seeds is to promote seed ripening. The second is to use ultraviolet rays in sunlight to kill pathogens attached to seeds, eradicate the source of bacteria, and reduce disease. Seeds through the winter stock, the temperature is low, through the sun, can make the seeds inside the fever changes, promote early germination, increase the germination rate. The drying method is simple, economical and effective, and the yield increase effect is obvious. According to the people's experience, a few days before sowing, select sunny and windless weather, drying seeds for 4 to 5 days can increase seed vigor, and early emergence of 3 to 4 days.
3. Germination test The buckwheat seeds are more resistant to storage. Generally speaking, seeds sown in the second year of harvesting are not used for germination tests. If it rains during harvesting, poor storage conditions, deterioration due to moisture, or introduction from outside, germination tests should be done before sowing. If the germination rate is less than 90%, the sowing rate should be appropriately increased. The germination rate below 50% should not be used as seeds.
4. In recent years, the seed-dressing buckwheat head smut has picked up again. Therefore, it is necessary to vigorously promote the seed dressing. The seed dressing agent is a 0.3% phenanthrene awake or seed dressing cream, and at the same time, 5% of heptadium powder is used to cook poison valleys or toxic soils sowing into the soil with the seeds to prevent underground pests.
5. Sowing date makes full use of natural conditions to select appropriate sowing dates, which is an effective measure for high yield of buckwheat. As the saying goes, "see seedlings received half," sowing date not only affects Miao Quan, but also plays a decisive role in the future growth period.
The suitable sowing date for the summer buckwheat area should be based on the ecological and climatic characteristics and the practical experience of the people for many years. It should generally be before and after the spring equinox until the Ching Ming period. It should not exceed the valley rain at the latest. The results of the Provincial Institute of Agricultural Sciences' Cold Field Crop Research Institute showed that the yields sown before and after the vernal equinox and Qingming were generally above 150 kg/mu.
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