Small whole potatoes are good for sowing potatoes.

Planting autumn potato is an effective measure for drought resistance and damage compensation at present. Autumn potatoes are generally sown from mid-August to early September. Because most potato seed tuber producing areas in China produce large seed tubers, in order to reduce costs and save seed quantity, potato sowing is often cut into pieces. However, in recent years, the use of 20-50 grams of small whole potato seeding, more and more worthy of advocacy, compared with the traditional cut potato seeding, whole potato has many advantages. First, the seedlings are neat and the seedlings are strong. Cutting seeds, such as soil moisture is low or high, soil moisture is too low or too high, or seed potato storage time is too long, physiological age is in decline period, easy to cause drying or rot, in bad production conditions, it is not easy to preserve seedlings. When sowing with small whole tuber, because there is a thick cork epidermis outside the whole tuber, it is beneficial to preserve the moisture and nutrients in the tuber when sowing. Under the bad conditions such as too dry and too wet soil, the emergence rate can be guaranteed to the maximum extent. The emergence rate is generally 92%-98%, which is 18%-37% higher than that of cutting seed. Second, it can give full play to the top advantage and obtain high yield. The whole tuber germinated mostly from the top bud eye. Because the bud at the top was strong, it could give full play to the top advantage of seed tuber. When whole tuber is sown, multiple main stems can be produced from the top, each main stem can bear 3-5 tubers, and the number of main stems increases the number of tubers, thus achieving high yield. It is reported that the use of small whole potato seeding than the use of cut potato seed generally increased production by 15%-50%, the highest can be doubled yield, potato large and neat, improve the economic value, while the flour rate is also significantly improved. Third, it can reduce the spread of diseases. Many viruses, such as potato virus X, spindle tuber viruses, bacterial diseases, such as ring rot, bacterial wilt, late blight, etc., can be expanded by potato cutting knives. Whole potato sowing can eliminate the occurrence of these diseases. Especially for autumn potato, the temperature is high and the humidity is high when sowing. If the seed potato is cut into pieces, if the wound cannot heal quickly, the cut surface is easy to infect bacteria and cause rot, which can easily cause a large number of rotten seeds, resulting in lack of seedlings and broken strips in the field, the whole potato must be sown. Small seed tubers for sowing should be specially produced by means of close planting, late sowing and early harvest, and small whole tubers should not be selected from ordinary seed tubers for use. The selection criteria of small whole potato were smooth and tender skin, bright color, deep bud eyes and potato shape characteristics of this variety. Strict elimination of rough skin aging, dark gray color, bud eyes lighter, abnormal strange shape and crack of small old potatoes. Umbilicus has black, brown small whole potato also want to eliminate.