Potato "holding eggs" seed retention technology

Potatoes generally use small sweet potatoes to retain seed, which has two advantages: First, the method is simple and does not require cutting; second, there is no need to worry about the spread of virus infection due to knife-edge cutting. There are also two shortcomings: First, long-term use of small potatoes for planting, will inevitably lead to an overall decline in seed quality, which will lead to a gradual decline in yield; Second, the election too small potato production is not high, but choose a little more for species The amount is too large, generally 667 square meters (1 acre) with a seed amount of about 150 kg. In response to this problem, the author guided the high-mountain farmers to adopt a large-sized potato to hold seed and cultivate them with good results. The specific method is:

After harvesting the high-quality potato in summer, the potatoes were carefully selected and preserved. The potatoes are sown and dried for a period of time, and then they are selected for ventilation in a cool place to build a bed. The bed is 1.5 meters wide and the length is determined by the number of potatoes. Firstly, lay a layer of moist river sand or fine soil on the bottom of the bed (humidity is held in a group and chest level is the degree of dispersion), the thickness is about 10 cm, and a layer of selected large potato species is further arranged. About 10 centimeters in length, then fill the gap between the potato species with moist river sand or fine soil, and then lay a layer of river sand or fine soil on it, the thickness is still 10 centimeters, and then arrange a layer of potato species. Shop (row) put, a total of 2 to 3 layers of potato species, and finally covered with sand or fine soil above the top cover grass moisturizing. After the potato seeds are well-lined, dig drains around the bed to prevent waterlogging, and take care to prevent rat damage. Later, when the top cover soil was found to be dry, it was properly watered and kept moist. After 40 to 50 days, the potato can sprout and grow many small potatoes (actually potatoes with mother potatoes grown in dark conditions). This small potato can be grown.

There are four outstanding advantages compared with the traditional small whole potato seed retention in potatoes. The first is to choose the best large potato as a seed, which can increase the genetic quality of the potato species and lay a good foundation for high yield. Second, small potato is actually formed by the expansion of the shoot tip in which the potato sprouts. Using it as a seed can play a certain role in “detoxification.” Potato virus disease occurs relatively lightly after planting; third, the vitality of the new potato is strong. Use it to make seedlings neat, grow vigorously and yield high; Fourth, each big potato can “hug” a number of small potatoes, only 50 kilograms of seed potatoes per 667 square meters can be used, saving about 60% of species, In addition, the large potatoes after the "hogging" can also be used as feed.

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