Potato spring introduction five attention
At present, it is the season of potato planting. When planting seeds, it is necessary to know in detail the latitude, altitude and climatic conditions of the potato stems. According to the introduction rules of potatoes, the origins and varieties should be correctly selected. Specifically, pay attention to the following five aspects:
First , latitude and altitude
Tests have shown that introduction from high altitude to low altitude and high latitude to low latitude is easy to succeed. The reason is that the temperature is low during the growth of high-altitude and high-latitude potatoes, and the potato stems are infected with light virus and slow degradation. They are introduced to low-altitude and low-latitude plants, and generally have good performance and high success rate.
Second, climatic conditions
The introduction of distant places depends on whether the introduced land and the producing area are close to the climatic conditions, that is, whether the climates of the two regions are similar in the same season or whether the climates in the two seasons are similar, such as the winter in the south and the summer climate in the north. The temperature is close and the rainfall is similar. In this way, the introduction of the variety is easy to succeed.
Third, the variety growth period
Potatoes are light and sensitive to light. Introducing it from the long sunshine area to the short sunshine area often does not bloom, but it does not affect the growth of underground tubers; while the short-day variety is introduced into the long-day sunshine area, sometimes it does not contain potatoes. Temperature has a great relationship with potato growth, especially in the potato-growing period. If the soil temperature exceeds 25 °C, the tubers will basically stop growing. Therefore, we must pay attention to the length of the breed during the introduction, especially the introduction of the province from the north, we must introduce early maturing, medium and early maturing varieties, and strive to harvest before the temperature rises.
Fourth, the choice of virus-free stems
Viral disease is the main cause of the degradation of potato varieties. It destroys the internal normal function of the plant. Even if other growth conditions are satisfied, the plant still cannot grow well, and it is inevitable that the yield will be severely reduced. The virus-free potato plantings have developed root systems, strong absorption capacity, and thick stems and leaves, which generally increase yield by more than 30%.
It is necessary to introduce early-stage detoxification seed potatoes: the early-stage seed potatoes are shortly planted after detoxification, and there is less chance of re-infection, and the incidence rate after planting is very low. Compared with the late-stage detoxified seed potatoes, the growth is robust and the yield increase is large. In order to produce commercial potato and processed potato for planting purposes, secondary or tertiary detoxification potatoes are generally used. When introducing or purchasing, you must choose the official seed business unit and scientific research department. At the same time, ask whether the seed potato purchased from the seed potato is produced in a virus-free seed potato base, and whether there is a “seed certificate†or a “seed quarantine certificateâ€.
Fifth, pay attention to the trial demonstration
In the same climate type area, it can be introduced directly in areas with close distances. However, the climate types are different. In the farther places, the introduced new varieties must undergo the trial planting process. The trials are indeed superior to the varieties grown in the field in terms of yield, quality and resistance, and the planting area is expanded.
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