How to prepare soil and fertilize Robinia pseudoacacia seedlings?
The method of soil preparation and fertilization of Robinia pseudoacacia seedlings is as follows: the seedling land should be deeply ploughed, preferably in autumn and winter, the top of the following spring is fine raked flat, with a depth of 20 to 30 cm, and stone grass roots are picked out when raking. 4000 to 5000 kg of rotten barnyard manure and 10 to 15 kg of ferrous sulfate are applied per mu to control underground pests.
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Robinia
Latin name: Robinia L. English name: Locust Introduction: deciduous trees or shrubs. Bud under petiole. Leaves odd-pinnate; leaflets opposite; stipules spiny; stipule present. Racemes pendulous; calyx 5-toothed, slightly 2-lipped; upper petal suborbicular, recurved, wing incurved, keel incurved; stamens diploid. About 20 species, North America and Mexico. Three species were introduced into China.
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Seedling raising technique of Robinia pseudoacacia
The main results are as follows: (1) Robinia pseudoacacia seedlings like light and differentiate early, if the seedling density is too high, the differentiation is more obvious, so there should be time seedlings. The first interseedling was carried out when the seedling was high 3-4cm, and then the diseased and weak seedlings were removed, and then according to the growth and density of the seedlings, the seedlings were divided into two times. 15 seedlings should be retained per meter length. It is suitable to keep about 1.2-15000 seedlings per 667m2. (2) do not water Robinia pseudoacacia seedlings before they are unearthed, so as not to harden the topsoil and cause uneven emergence of seedlings. Watering the seedlings at the right time after emergence, often
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