Although chestnuts are dried fruits, they are afraid of dryness, water, heat and cold. Therefore, production must pay full attention to the harvest and storage of chestnut fruit. First, timely harvest chestnut mature signs are: chest is yellow, roof cracked into "10" shape, chestnut brown and shiny. Chestnut harvest time varies from variety to variety. Generally early-maturing varieties are harvested in early September, while late-maturing varieties are harvested until early October. 2. Sweating as soon as possible The “sheaving†treatment should be carried out as soon as possible for the harvested chestnut shed. Because at that time the temperature was high (sometimes above 20°C), the real water content of the chestnut was large. If it was not dealt with in time, the chestnut was easily rotted. The treatment method is: Select a cool and ventilated place on the back of the shade, spread the chestnut thinly, and splash water to cool down every day. Two to three days after the “sweating†treatment, artificial threshing is performed immediately. Third, the fumigation insecticide Most of the chestnut-producing areas of weevils, peaches and mosquitoes harm the fruit is more serious, must take fumigation measures. After threshing threshing, the (fumigation chamber) uses 2.5 to 3.5 grams of methylene bromide in a confined condition and fumigation for 24 to 48 hours; or 30 milliliters per cubic meter of carbon disulfide for 20 hours to kill pests without affecting Germination force. 4. The chestnut fruit that has been treated with the above treatment in the wet sand trench can be buried temporarily in the interior after being mixed well with the wet sand. Before freezing, dig a trench that is 1 meter wide and deep in the outdoor shade. Cover the bottom of the trench with a layer of 10 cm thick wet sand. Mix the chestnut fruit with the wet sand twice as much as the chestnut fruit and place it in the trench. Until 20 cm from the edge of the ditch. While putting in the chestnuts, a 10- to 15-cm-diameter grass handle should be erected every 1 meter in the ditch to facilitate ventilation. After the chestnuts are finished, cover them with 10 cm of sand. Finally, soil is used to form a soil to prevent the infiltration of rainwater. China Agricultural Network Editor
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