First, the need for fertilizer characteristics Eucalyptus is one of the three fast-growing species, developed roots, strong absorption, growth. Sufficient supply of water and fertilizer, 1-year-long 1.5-5.5 meters high, 4-5 years can be harvested. The main nutrients absorbed by eucalyptus are: nitrogen, phosphorus, potassium, calcium, magnesium, zinc, boron and so on. According to the research, each eucalyptus tree has an average absorption of 36 grams of nitrogen, 2.8 grams of phosphorus, 20 grams of potassium, 31 grams of calcium, and 8.5 grams of magnesium each year. The absorption amounts are nitrogen> calcium> potassium> magnesium> phosphorus, and nitrogen, phosphorus, and potassium are absorbed. The ratio is: 13:1:8. Nitrogen-deficient plants are chlorotic or purple-red, which impedes growth. Potassium-deficient plants are weak, easy to fall flat, and dull in leaf color. Calcium and magnesium increase the resistance of eucalyptus, making eucalyptus grow rapidly, and the tree is straight and well-proportioned. The rate is high; zinc and boron promote the growth of eucalyptus tops. If these two elements are lacking, eucalyptus will appear dry and the buds will become swollen and become brittle, tend to wind fold, and form weak plexus, which will seriously affect the growth of eucalyptus. Spice Novelties Co.,Limited , https://www.wholesale-adult-toys.cn
Second, fertilization technology Banyan tree fertilization first of all to meet the various nutrient needs of eucalyptus; Second, to do the right amount, with the minimum fertilizer input, to achieve the greatest economic benefits; Third, we must master the fertilization method to improve fertilizer utilization.
Eucalyptus fertilization is carried out as follows:
Base fertilizer: 7 days before planting, 0.25-0.5 kilograms of compound fertilizer or eucalyptus special fertilizer is applied to each hole. Fertilizer is applied to the cave and a layer of 1-2 cm thick topsoil is backfilled.
Dressing: 1 month after planting, or 1 meter after sapling height, start topdressing, and apply 0.25 kg of compound fertilizer or eucalyptus special fertilizer per plant to promote long-term growth of eucalyptus. In the second year, top-dressing once in March and April. 0.5 kg for each compound fertilizer or eucalyptus fertilizer; for the third year and the fourth year, each fertilizer is applied once, each compound fertilizer or eucalyptus special fertilizer 0.8 kg, to promote the rapid growth of eucalyptus, 4-5 years can be felled , Per mu of wood up to 6-8 cubic meters.
Top dressing tips:
1, before each fertilizer, we must weeding to avoid weeds competing for fat.
2, from the tree root 30 cm, in the direction of the tree roots uphill, open the crescent-shaped fertilization ditch or in the tree roots, left and right sides to open a fertilization point, cover soil after application to prevent fertilizer loss.
3, the best choice for fertilization after the rain, fertilizer can be easily absorbed.
4, slope, thin and thin soil, should be more fertilization, ditch Valley, the soil is thick and fertile, should be less fertilization, according to local conditions, a reasonable amount, save costs and improve efficiency.
5. Soil testing and fertilization. According to the soil testing and fertilization recommendation card given by the technical department, fertilization will be carried out to increase efficiency.