At the beginning of the new year, 20 walnut seedlings were planted in Yaojiaba, Xinchang Town, Tongjiang County. The county's Forestry Bureau’s two-stage rapid propagation technology of “priming in greenhouses†and “extracting rows in fields outdoors†has achieved initial success. It is reported that the cost of walnut seedlings is high, the pattern of seedling production is chaotic, the seedling technology is not too rigid, and the contradiction between the supply and demand of walnut seedlings in the coming period is a problem that restricts the development of the walnut industry in our province. In this regard, the Tongjiang County Forestry Bureau implemented a two-stage rapid breeding of high-quality empty pecans and introduced the Jinfeng Dried Fruit Specialty Cooperative. The Xinjiao Yaojiaba shed base was used as a nursery carrier, and more than 150 acres of land were rented in Dongxi Village, Daxing Township. Walnut rows outside the field are ready for preparatory work such as site preparation, fertilization, and irrigation. It is expected that over 1.2 million walnut seedlings will be provided in 2014. Walnut "two-stage" seedlings, after pre-emergence in greenhouses, outdoor rowing, soil and fertilizer management, and pest and disease prevention and management measures, can significantly improve the quality and survival rate of seedlings, shorten the time for seedlings, promote seedlings to grow neatly, and achieve early and stable yields. . However, compared with traditional nursery, the "two-stage" management is more elaborate, the technical content is higher, the process is complicated, and the workload is high and the cost is high. Chen Jun, chief of the Industrial Unit of the Tongjiang County Forestry Bureau, said that relying on cooperatives, uniform technical training and guidance can be implemented. The technical points are as follows: Under the greenhouse 1. Greenhouse selection: Choose a place where the leeward sun is sunny and the drainage is smooth. 2. Seed treatment: Wash the seeds into sacks, soak them in cold water for 8-10 days, and expose them to sunlight. Seed cracks can be exposed. 3. Make beds for soil preparation: Apply appropriate amounts of decomposed farmyard manure to soil preparation and add 50% of carbendazim or 50% of thiophanate-methyl for soil disinfection. Turn the soil deeper, flatter, and make the soil finer. Made of 1.2 meters wide, depending on the actual situation, bed height 30?. 4. Seeding: Place the seed of the crack in a flat space of 56cm. The crack is perpendicular to the ground, covered with a layer of fine soil, and can be compacted by hand. 5. Temperature: The daytime temperature is controlled at 25-28°C and the nighttime temperature is controlled at 15-20°C. 6. Humidity: The humidity in the greenhouse is kept at about 70%. 1. Selection of land: It requires a flat terrain, sunny leeward, loose soil, deep throat and fertile soil, convenient irrigation, and good drainage. 2. Site preparation: deep plowing or deep plowing, fine soil preparation. To achieve virtual reality, the soil is fine, and the soil is even. At the same time as the site preparation, the basic fertilizer should be applied. Among them, farmyard manure is 3000-5000 kilograms per mu, and superphosphate is 50 kilograms per mu. After the completion of the site preparation, a 1.2-meter-wide seedbed was used for its length. 3, row planting: Before rowing, cut 30% of the main root, with the rooting powder solution will need to row walnut seedlings soak for 10-15 minutes, then row spacing 2030cm row, hand compaction. 4. Seedling management: In the seedling stage, adhere to the principle of “less and hard†watering. The seedlings can be sprayed 1:5000 times in the early stage, and 0.3% urea solution is used for foliar fertilizer application in the later period. 5. Pest control: 3-5 lime sulfur or 50% Thiophanate 1000 times. 6, weeding loose soil: adhere to early, in addition to small, in addition to the principle, each time after watering loose soil, weeding.
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Outdoor field rows