Method for breeding stock seeds of small intact virus-free potatoes

Abstract

The invention discloses a method for breeding stock seeds of small intact virus-free potatoes, and belongs to the field of crops. The method includes steps of selecting stock seed breeding bases; carrying out preparation work before seeds are sowed; managing fertilizers and water in the bases. The method includes particular procedures of taking out stored stock seed potatoes before the seeds are sowed, rejecting diseased potatoes and rotten potatoes, then placing the stock seed potatoes in indoor environments with scattered light at the temperatures of 18-22 DEG C, allowing the stock seed potatoes to naturally sprout by means of dormancy, promoting buds to turn green and selecting the stock seeds which pass the dormancy and have short and robust buds to be used as seed potatoes; planting the stock seeds of potatoes at certain seed sowing density. The seed sowing density includes that the plant spacing is 10-12 cm for the potatoes with the weights of 3-20 g, and the planting spacing is 13-15 cm for the potatoes with the weights of 20-35 g. The method has the advantages that the planting density of the stock seeds of the potatoes is increased, the quantities and the yields of the small potatoes of the stock seeds produced by the aid of the method can be increased, and accordingly the purpose of sowing the seeds of the intact potatoes can be achieved; the seeds of the intact potatoes are sowed, accordingly, bud tuber slitting working procedures can be omitted, labor can be saved, and mechanical operation can be facilitated.

Description

technical field [0001] The invention belongs to the field of crops, and in particular relates to a method for breeding original seeds of virus-free small whole potatoes. Background technique [0002] Many viruses of potatoes, such as potato X virus, spindle tuber virus, etc., and bacterial diseases, such as ring rot, bacterial wilt, late blight, etc., can expand the spread of diseased seed potatoes through potato cutting knives. When the seed potato is cut into pieces, if the wound cannot heal quickly, the cut surface is easily infected with bacteria and causes rot, which can easily cause a large number of rotten seeds, resulting in lack of seedlings and broken bars in the field. [0003] The existing method of cutting potatoes for sowing, if the soil moisture is low or the humidity is high, the soil moisture is too low or too high, or the storage time of the seed potatoes is too long, and when the physiological age is in a declining period, it is easy to cause dryness or ...

AI Technical Summary

Problems solved by technology

When the seed potato is cut into pieces, if the wound cannot heal quickly, the cut surface is easily infected with bacteria and causes rot, which can easily cause a large number of rotten seeds, resulting in lack of seedlings and broken bars in the field

[0003] The existing method of cutting and sowing potatoes, such as when the soil moisture is low or the humidity is high, the soil moisture is too low or too high, or the storage time of the seed potatoes is too long, and when the physiological age is in a declining period, it is easy to cause dryness or rot. Under the production conditions, it is not easy to preserve the seedlings