Brown Lee rapid breeding method

Brown Plum is native to the United States. In order to speed up the breeding of brown plum seedlings, our researchers have explored a seedling technique that was planted that year, grafted that year, and that year it was bred. The main measures are as follows: 1. Selection of seedlings. Choose a sandy loam with convenient transportation, complete irrigation and drainage facilities, and fertile soil. Do not use saline-alkali land, low-lying land, clay land, and heavy land. 2, seed processing. Take nectarine as rootstock. There are two kinds of rootstock seed processing methods: (1) no sand: Select seeds, drying, no soaking in a month and a half, remove and control the water, direct sowing. (2) Sand: no month soak the selected seeds for a day and night, remove and control the clean water, use 50% carbendazim for 1000 times, mix sand with wet sand (the moisture content of the sand will become a group, a touch. Scattered is appropriate). Shazanggou is better in the shade, with a depth of 30 cm. The bottom of the trench is covered with 5 cm of sandy soil, and the mixed seeds are poured and the top is covered with 10 cm of sand. Half a month later, check regularly to see if the temperature and humidity are the same. When the seeds are 7% white, they can be sown. 3, soil preparation. For seeds that are not sandy, after soaking, they are sowed before freezing (Yuan); seeds are sowed in February. Miaoyao applied 5,000 kilograms of high-quality farmyard fertilizer per 666.7 square meters, 25 kilograms of phosphate fertilizer, and 25 kilograms of potash fertilizer, and used potassium-phosphorus-phosphorus-phosphorus for soil treatment to prevent and control underground pests. After the land is leveled, the width of the plant is 2 meters. The planting distance is 50 centimeters and the north and south direction. Before the next species, it is sufficient to sow the seedlings with a depth of 4 cm, a turtle shape, and a mulch. 4, seedling management. When the film temperature exceeds 35°C, break the film in time to prevent burning. After the seedlings emerged from the film, a small amount of fertilizer was applied to the fertilizers in quick succession, timely watering, cultivating and weeding, removing lychee, and controlling pests and diseases. 5, timely grafting. When the seedlings are 0.5 centimeters thick, they will be "T" shaped, "spread" buds, and "cut" grafted. The grafting site is more than 20 cm above the ground, and the leaves of the base should be preserved. 6, then manage. When the grafted buds germinate, the rootstocks that germinate below the buds should be removed as early as possible. Apply 7.5 kg of fast-acting fertilizer at 666.7 square meters every 15 days. Pay attention to the prevention and control of diseases and pests, timely watering according to flood conditions, drainage during the rainy season, excessive water intake of Brown Lee. .

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