Keel transplanting technology

The keel is also known as a mountain dragon and a dragon in the ground. It is a perennial herb for the Dioscoreaceae and a rhizome for medicine. Its stems are slender, with vertical grooves, often wrapped in other plants, leaves alternate, leaves ovate or broadly ovate, apex acute, often 3-5 shallow, veins below the bulge, many fine hair, dioecious, Flowers drooping, yellow-green, fruit oval or elliptic, with three broad wings, yellow-brown after maturity, rhizome traversed, cylindrical, not straight, curved, early flowering in early June, fruiting season, late September-October . Nursery points: 1, the election site preparation. Loose and fertile sandy loam should be selected, and irrigation and drainage facilities should be well equipped. In autumn, 3,000 kg of decomposed manure should be applied per acre. The plowing depth should be 25 cm or so. After the soil is thawed in the spring, the bed height is 15 cm and the width is 120 cm. The length can be determined by the terrain, flattening the bed surface, forming a turtle shape that is slightly taller in the center and slightly lower on both sides. 2, seed before sowing. The characteristics of physiological dormancy of keel seeds need to be successfully germinated after a period of low temperature. Generally germination begins in late March and can be sown in late April. The specific steps are as follows: Select the clean river sand, sieve the sand larger than the seeds, and pass the seeds through. After water selection, rinse the seeds and impurities, disinfect with 5 高 ​​potassium permanganate, mix the seeds and sand in a ratio of 1:5, and put it into the ventilation and germination room. The temperature is set to 0-5Co in the first two weeks. Between 80% and above, the relative humidity is measured by the degree of moisture in the palm of the hand, once every other week, and 3 to 5 days after the third and fourth week. The seed development status is often checked to identify the deterioration of the mold. Seeds, temperature control and water transfer, check the seed embryo rate one week later, and when the embryo rate reaches more than 85%, the seeds can be sowed. 3, sowing. Spread by hand, the amount per mu is about 5 pounds, the thickness of the earth covering is 1cm, the pine needles are covered after a little repression, the pine needles are red pine and sand pine, the thickness of pine needles is not visible to the ground, and the subsidence can be seen as the degree. . 4, seedling management. Seedlings before weeding, sowing within 20 days, the weeds breed faster, at this time the seedlings have not been exhumed, can be used herbicide "Dongda" or "g without trace" in addition to the theory, "Rongda" with 200ml per acre is better, also Visibility can be increased or decreased as appropriate. After weeding, weed herbicides should be used, such as “fine grater grass”, “precise killing special”, “cover grass energy”, etc., can eliminate grass weeds, dicotyledonous weeds can be manually removed. When the seedling height is about 10cm, fine vines begin to spread. During this period, they should be inserted with a density of about 20 eggs per square meter and a length of about 1.4m. 5. Pest control. Diseases mainly include rust, powdery mildew and spot disease. After the early stage of disease onset, they can be controlled with 15% triadimefon 800 times or 70% mancozeb 500 times, once every 15 days, ie Can effectively control. Insect pests mainly include white gold needle beetles, cockroaches, and cockroaches. Irrigation with 1000-fold trichlorfon liquid can effectively control the pests.

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