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1, sand storage method. 2. Fresh storage of cattail. Plastic bags are stored indoors at room temperature. 4. Dilute acetic acid soaking and storage. 5. Soak in fresh water or salt water for storage. 6. Radiation preservation and storage.
Chestnut;
Also known as Castanea mollissima, Castanea mollissima and Castanea mollissima, it belongs to Castanea of Fagaceae. It is native to China and distributed in Viet Nam, Taiwan Province Province and Chinese mainland. It grows at an altitude of 370-2,800 meters, mostly in mountainous areas, and has been widely planted. Chestnuts are rich in nutrition, and the content of vitamin C is even higher than that of tomatoes, which is ten times that of apples. The minerals in chestnuts are also comprehensive, including potassium, zinc and iron. Although the content is not as high as hazelnut, it is still much higher than that of ordinary fruits such as apples, especially the potassium content is three times higher than that of apples.
Morphological characteristics:
Castanea mollissima is the general name of Castanea trees or shrubs in FAGACEAE, with about 7-9 species. China is generally divided into two kinds, wild chestnut and hybrid improved chestnut. The improved varieties after cross-culture are widely planted in China. Because of its big size, sweet taste and strong disease resistance, it is widely planted in China. Chestnut trees are native to temperate regions in the northern hemisphere, and most kinds of chestnut trees are 20-40 meters high.
Global distribution:
The genus is distributed in Asia, Europe, America and Africa in the northern hemisphere. The main cultivated variety is China? Xinglong county, Qianxi chestnut, Houyang chestnut, what else? European chestnuts and? Japanese chestnuts.
China distribution:
In China, it is distributed in Luotian County and Macheng City of Hubei Province. There are large areas of chestnut planting in towns and villages such as Shunhe Town, Huangtugang, Guishan, Yantian River, Mu Zi Store and Zhangjiafan, which has become one of the ways to increase the income of local farmers in Macheng. From Henan province? Tongbai County and Shangcheng County are also rich in chestnuts.
Distribution in USA:
American chestnut was originally the main tree species in the eastern United States, and now there are chestnut species in Europe and West Asia.
Growing environment:
Chestnut has a wide range of adaptation to climate and soil conditions. The suitable annual average temperature is 65438 0.5—265438 0.7℃. Too high temperature and insufficient hibernation will lead to poor growth and development, and too low temperature will easily cause freezing damage to chestnut. Chestnuts like it? Wet soil, but afraid? The influence of rain and waterlogging, if there is too much rainfall, the soil will accumulate water for a long time, which will easily affect the growth of roots, especially mycorrhiza. Therefore, it is not suitable to develop chestnut orchards in low-lying and waterlogged areas.
Chestnut, right? Soil PH value is sensitive, and it is suitable to grow in slightly acidic soil with pH value of 5-6. This is because chestnut is a high manganese plant, which can activate manganese and calcium under acidic conditions? Nutrient elements are beneficial to the absorption and utilization of chestnut. ? Xuzhou area is located in the southern margin of Huangtan Lake, with an annual average temperature of13.7-14.1℃ and an annual precipitation of 782-946 mm, which is suitable for the growth and development of chestnut trees.
Medicinal value:
Chestnut has the functions of strengthening spleen and stomach, invigorating qi and kidney, strengthening waist and tendons, stopping bleeding, reducing swelling and strengthening heart. It is suitable for treating soreness of waist and knees, weakness of waist and legs, increased urination caused by weakness of spleen and stomach, chronic diarrhea caused by deficiency and cold, fracture caused by trauma, blood stasis, and swelling and pain of bones and muscles.
Bright oil chestnuts also have high medicinal value. Chestnuts have the functions of strengthening spleen and stomach, benefiting qi, tonifying kidney and strengthening heart, and are mainly used to treat nausea, vomiting blood and hematochezia. Xian Yi, young and old. Chestnut is rich in soft dietary fiber and its glycemic index is lower than that of rice. As long as sugar is not added in the processing and cooking, diabetics can also taste it in moderation.
Chestnut is rich in unsaturated fatty acids and vitamins, which can prevent and treat diseases such as hypertension, coronary heart disease and arteriosclerosis. Chestnut contains high sugar, fat, protein, calcium, phosphorus, iron, potassium and other minerals, as well as vitamins C, B 1, B2 and so on. , has the function of strengthening the body.
Pregnant women eat chestnut to strengthen their bodies and bones.
Chestnuts are also called chestnuts. Together with red dates and persimmons, they are called "three major woody crops". Chestnut is rich in nutrients such as protein, fat, carbohydrate, calcium, phosphorus, iron, zinc, vitamins, etc. It has the functions of invigorating spleen and stomach, tonifying kidney and strengthening tendons, promoting blood circulation and stopping bleeding. Pregnant women often eat chestnut, which can not only strengthen the body and bones, but also help the pelvis to mature and eliminate fatigue. Moreover, the fried chestnuts are sweet and delicious, and they are very good food.