How do we grow american red maple seeds? How does american mammoth grow? In recent years, the introduction of american mammal in various horticultural fields in the country has been successful, and engineering seedlings have been cultivated to market. A summary of their techniques for seedling is presented below。
I. Selection and treatment of the nursery
The nursery land shall be selected for flat ground, easy drainage, soil thickness, soil fertility, micro-acidity, wetness and permeability. Five thousand kilograms per acre, 100 kilograms per cake, and 50 kilograms per acre. In order to prevent pests from growing, especially underground pests, it is necessary to use 8 kgs of iron sulphate ~ 10 kg, 2 kg of granules of phosphorus = 2 kg per acre, and to mix it with fine earth, sow it on the ground, then do deep tillage, dredge it, and then flatten it up to the north and south, requiring a width of 1 m, a width of 30 cm and a length of 20 m to 30 m。
Seed treatment and seeding methods
The seeds of red maple in the united states, which are not dormant, can be broadcast either in the autumn or in the spring, and are now mainly broadcast. The planting time of the trees is appropriate for mid-march to mid-april. After a half-hour immersion with three per thousand potassium manganeseate, then 24 hours with cool water and up to 65 per cent with water (see wet and dry), seeds and wet sand are smoothed to a ratio of 1:3 (sand with fresh thin river sand, no sand with rough saloons, wash with fresh water again, wash away with mud, dry up to the group, loose hands) and treated for a month with cold sand at 3°c to 5°c (three most suitable). During the build-up period, regular inspections and management are carried out, seedlings of seedlings are detected and seeded in a timely manner. The seeding takes place at the bottom of the plume, so that the water can seep and soaks, with around 200 seedlings per square metre, with 0. 5 centimetres of fine soil covered under the pharmacological soil that contains the octopus (which cannot be used for root damage). In order to preserve the temperature of the earth, seedlings grow early and well, covering the membranes or small arch sheds, which are ventilated and have proper shades of the sun at temperatures exceeding 30°c at noon. It's about 15 to 20 days after planting。
Iii. Shrimp production and management
After the seedlings are released, they grow slowly at an early stage, with poor resistance often sprayed, soil moisture maintained and weed cleared for the trees in a timely manner, with as much soil as possible to prevent inversion. When a seedling grows to 5 cm high, the seedling is established, usually after flooding, weak, sick and small at a distance of 10 cm to 15 cm, and it is maintained in a robust manner, with earth ball transplants to be carried out in the rain. In early june, urea was followed with water, 15 kg per acre, in mid-july, 10 kg - 15 kg per acre, with proper water management. The end of nitrogen fertilisation and irrigation after september could lead to an appropriate increase in phosphorus potassium fertilization, the promotion of woodification, increased resistance to trees and the establishment of next-year planting rates. In the united states, mammoth is free of serious pests and, when pests such as moths are found, bromocylene esters of up to 4000 times more can be administered。
Iv. Mobilization
In the united states, seedlings of red maple were growing at a high rate of up to 1 to 1. 5 metres in the year, with trees growing at a faster rate than those of the country (20 to 40 centimetres per year), 60 to 100 centimetres per year, and usually in the spring of the following year, they could be planted to grow large seedlings. The united states has a high rate of red maple migration and a low maintenance workload, but prefers acid soils and tolerates half-yang environments。
After two seasons of planting in autumn and spring:
Autumn can be planted, but as early as possible, if there is no wood in qingdao before leaves fall, even a plastic shed in qingdao will freeze to death. So it's best to plant in the local spring.
In practice, american red maple seeds do not need cryogenic sprouts, and do better at about 20 degrees of constant temperature. And the highest seed sprouts occur in the year, with the next year's sowing seriously affecting the sprouts。
