It is the key to prevent the application of potash fertilizer

Potatoes are both crop and vegetable crops and have high nutritional value. Recently, when we surveyed Lutai Village, Sanhe Town, Yingcheng City, Hubei Province, we learned that 4 acres of potatoes were grown in Lulan Forest, and the income per mu was nearly 5,000 yuan. Farmers who grow potatoes in the same way have only received 2000-3000 yuan, and some are even lower. Intuitive, good-quality potatoes are more profitable, and the individual benefits of alienated potatoes will be greatly reduced. The reason for the appearance of abnormality is, in addition to the variety selection, largely related to the cultivation and management, especially the level of potassium application.

We also found that some potato farmers planted potatoes in Yingcheng and Yunmeng County, Hubei Province, discovered that some potato stalks have large potato stalks. The potato stalks can be cut open to see the hollow phenomenon, and some peasant households have potato stalks. The long tuber or tumorous tubers, and the farmers' reports that they have green tubers, farmers' friends do not know how these deformed tubers occur, nor do they know how to solve them.

Although the proportion of non-alcoholic tubers is small, it occurs every year. Through investigation and analysis, it was found that most of the saplings produced were potato stalks with larger individual size. Generally, the conditions for fertilizer and water were good, the planting density was very thin, or the plots with insufficient K fertilizer were more likely to occur. This is because during the process of continuous expansion of the tubers, the nutrients in the middle are converted and used again, dry matter is reduced, voids are formed, the content of starch around the cavity is reduced, and the quality of the tube is hard and refreshing when cooked. The potato or tuber potato is mainly a potato that is exposed to high temperature and drought during its growth and its development is inhibited. When the ecological environment improves, it resumes growth, and once again continues the small potato block, which is often referred to as "secondary growth." Such potato block consistency is poor. The green potato is mainly covered with shallow soil when planting, or soil is not cultivated in time after the large number of tubers and the sun shines directly on the potato block. Such potato block contains solanine, and humans and animals eat it poisoning. The above-mentioned special-shaped potatoes not only affect the yield but also reduce the quality. As a result, farmers’ income is reduced.

For this reason, in the potato production, we must take measures to solve the cause of the abnormal shape of the potato block. For the problem of prone to the occurrence of hollow potato, the first is to appropriately increase the density, medium fertility of the field, about 4500 plants per acre, control the infinite increase of the potato; Second, the appropriate amount of potassium fertilizer, need to apply potassium fertilizer per acre 10-15 kg. According to the determination of the agricultural scientific research department, for each 1000 kg of potatoes produced, it is necessary to absorb 4.84 kg of nitrogen, 2.24 kg of phosphorus and 10.34 kg of potassium. Potassium is very important for the growth and development of potatoes. It can increase the content of starch and vitamins in tubers, promote the accumulation of photosynthetic products in tubers, enhance the ability of plants to resist cold and resist storage, and greatly increase the proportion of high quality potatoes. For long-headed or tumor-like potatoes, one must select early-maturing or early-maturing varieties that are not susceptible to "secondary growth." Second, in the sowing period, try to avoid the high-temperature period: Third, choose a better drainage and irrigation conditions. A good field planting, when the high temperature and drought comes, it is convenient to reduce the temperature in a timely manner to resist drought, especially into the expansion period of potato wedges, to immediately drought, to ensure the normal growth and development of potatoes. For the green yam, one must pay attention to sowing can not cover the soil is too shallow, or raise the soil is not high; the second is to cover the straw or other stalks ying shells in the rows or on the soil; the third is not suitable for long storage after harvesting potatoes. Exposure to high light.

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