Fertilization before spring bamboo shoots is a key measure to supplement the nutrients in bamboo shoots and ensure the stable production, high yield and high quality of spring bamboo shoots. The technical points are: First, the fertilization time: generally 1 month before the shoot. At this time fertilization can promote the robust growth of sprouts that have sprouted, so that bamboo shoots are tender. Second, fertilizer types: The main application of urea, ammonium bicarbonate and ammonia, and other available fertilizers, can also be cooked cooked rape cake and human waste. If combined with the application of silicon fertilizer, the effect is better. The content of silicon in bamboo leaves and rice straw is large. Calcium, magnesium, phosphate fertilizer, and superphosphate can supplement the phosphorus content of woodland, and can be appropriately applied according to needs. Third, the amount of fertilization: should be based on the soil fertility of the woodland and bamboo shoots production target. For example, bamboo shoots with an average of 1500 kilograms of bamboo shoots per acre of bamboo shoots require 47 kg of nitrogen fertilizer, 21 kg of phosphate fertilizer, and 20 kg of potassium fertilizer. The amount of fertilizer applied before the shoot shoots accounts for 40% of the total annual fertilization. Fourth, the fertilization method: Before the bamboo shoots, the fertilizer applied for the bamboo shoots is good, but it can also be used for ditching. The former opens a round or radial groove 25 to 40 cm deep from the mother bamboo stalk base 1 to 2 meters, and the fertilizer is applied to the soil after the cover. The latter is to open a ditch 30 to 40 cm deep every 2 meters and apply the fertilizer to the soil. If human fecal urine is applied, a soil pit 30 cm deep should be excavated at about 1 m from the base of each mother bamboo stalk and 4% of the human waste can be applied. Regardless of the method used, mother bamboos from 3 to 4 years of age should be the main fertilization target, because this kind of bamboo attracts large amounts of fertilizer and has a high rate of shoots. If the soil is dry during fertilization, the watering application is better than dry application. Deep application is better than shallow application. Application of compound fertilizer is better than single fertilizer.
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