Key points of autumn mulching and sowing seedling techniques of walnut 楸
The technical points of autumn mulching and sowing seedlings of walnut stalks are actually very simple. During this period, it is necessary to do a good job in squatting selection, variety selection, sowing and land preparation, seedling management, pest control, etc. Friends can refer to the following for learning. 1 圃 choose Walnuts should choose loam or sandy loam with excellent drainage system, convenient transportation and fertile soil. 2 variety selection Choose to be straight in the trunk, the crown is complete, the growth and development is robust, no disease, the seed is taken on the fine mother tree of 25 to 40 years old. 3 seed treatment After the white dew, take the seeds that are naturally mature and mature, peel off the outer skin of the seeds, and bury the seeds in a wet state. The ratio of wet sand to seeds is 3:1. After the frost is removed, the seeds are removed. sowing. 4 sowing 4.1 Land preparation Remove debris and stones from the land, level the land, and take a flat bed. 4.2 Fertilization Apply 3t organic fertilizer per acre. 4.3 snoring The snoring requirement is 25 cm high and 100 cm wide. The length of the snoring depends on the plot, which is based on the level of the sputum. 4.4 Seeding Sowing time: when the temperature drops to zero in the frost season, it can be planted; Seeding density: The planting plant spacing is 15 cm, the row spacing is 25 cm, and the seeding depth is 6 cm. When seeding, the seeds are placed horizontally. After the seeds are placed, the soil is covered and pressed, and the water is poured. 4.5 film The mulch film is tiled and covered with soil, and the soil is tight after the second year. 5 seedling management Watering: Drainage measures should be taken during the rainy season, and water should be watered in a timely manner in dry weather; Fertilization: At the beginning of July, 30 kg of urea was applied per mu. In mid-July, the 0.5% hydrogen phosphate dipotassium compound fertilizer was sprayed on the foliar surface for one time. In September, fertilization and watering were stopped. 6 pest control Common diseases and insect pests in the autumn of walnuts include root rot, aphids, mites and tigers. For root rot, 500 times liquid irritant can be used for root rot control, and aphids, mites and tigers can spray 1 000 to 1 200 times of liquid imidacloprid or Killing spirit 1 200 ~ 1 500 times liquid control. Zhuhai Mingke Electronics Technology Co., Ltd , https://www.zhmkdz-electronics.com
