Sweet potato management What is proper after the beginning of autumn?
The beginning of autumn is the transition from hot summer to cool autumn in most parts of China, which is not only the harvest season for the majority of farmers, but also the period when the sweet potato is about to enter a critical period of root expansion. At this time, the quality of cultivation technology will play a decisive role in the yield and quality of sweet potato.
First of all, water control is very critical in the later stages of tuber growth. Although the temperature drops after autumn, sweet potatoes are still growing at a high rate, and the demand for water is still high. Whether the soil moisture is suitable has an important impact on whether the rhizome of sweet potato can be completely expanded. Therefore, farmers should pay attention to climate changes and soil moisture, and water in time to achieve "no waterlogging and no waterlogging". High soil moisture can easily cause rot of sweet potato roots, thereby hindering the growth and yield of sweet potato, so "moderation" is very necessary at this time.
Secondly, the control of the amount of fertilizer applied is also important. Sweet potato plays an important role in potassium and phosphorus, especially for tuber development and starch accumulation at root-knot stage. Although nitrogen application can promote seedlings and seedlings, it should also be moderately regulated at this stage to avoid excessive nitrogen application causing the growth of aboveground stems and vines, thus wasting too much nutrients, thus hindering the growth of the underground part.
Secondly, tillage and tillage are important links to ensure the quality of sweet potatoes. In the process of sweet potato growth, due to the exposure of the root system to light, "green shoots" will appear, which will have a great impact on the quality and flavor of sweet potato. For this reason, farmers should often plough and plough, and bury the exposed tubers in the soil to avoid sunburn to the roots.
In addition, attention should be paid to the control of pests and diseases. After the beginning of autumn, sweet potatoes will also be attacked by various diseases, such as sweet potato black spot, sweet potato borer, etc., so it is necessary to inspect the farmland frequently, and if there are signs of pests and diseases, biocontrol or chemical control should be carried out immediately to minimize the yield and quality of pests and diseases on sweet potatoes.
At the same time, the measures of "seedling control and seedling promotion" are also an effective way to increase the yield of sweet potato. For the sweet potato that grows too strongly, appropriate measures such as vine lifting or topping can be used to control the excessive development of the aboveground part and promote the delivery of nutrients to the underground part, so as to increase the yield.
At the same time, timely harvesting is also an important part of ensuring the quality and freshness of sweet potatoes. According to the characteristics of different sweet potato varieties and the unique weather conditions of the place, farmers should accurately grasp the harvesting timing, generally harvesting before frost, to prevent damage caused by low temperature frostbite, and to ensure that sweet potatoes can be stored for a long time after harvesting, so as to maintain their rich nutritional value and delicious taste.
In short, after the beginning of autumn, sweet potatoes began to the fine management of the root expansion period, including water, fertilizer, cultivation, disease prevention, seedling control and harvesting, etc., only careful care can ensure that sweet potatoes can achieve high yield, high quality purposes, to create good income for farmers, and at the same time to provide customers with more healthy and delicious sweet potato products.