When does acacia (acacia) blossom? How many years does it take to flower? What is the difference between the Chinese pagoda tree and the Chinese pagoda tree?

Black locust, also known as Robinia pseudoacacia. Robinia pseudoacacia is edible. Robinia pseudoacacia flowers produce sweet honey and high honey yield. The cultivated varieties are Hongsen Robinia pseudoacacia, safflower Robinia pseudoacacia, golden leaf Robinia pseudoacacia and so on. So when will the locust blossom and bear fruit? How many years does it take to plant before it blossoms? What is the difference between Guohuai and Guohuai? The details are as follows:

When does the locust blossom?

It takes about 3 years for Robinia pseudoacacia (Robinia pseudoacacia) to blossom, and about 5 years to enter the full flowering stage. The flowering period is from April to June and the fruiting period is from August to September.

Planting method:

1. Irrigation. Do not irrigate after sowing until the seedlings are ready. After emergence, when the soil moisture is moderate, it is necessary to loosen the soil and plough in time to increase the soil temperature and facilitate germination. Irrigation is too early, soil moisture is too large, soil temperature is low, easy to set seedlings or yellow leaf disease. On the basis of repeatedly ploughing and loosening the soil, water can be irrigated for the first time at the beginning of June, and then once every 20 days under normal circumstances. It was suspended for a period of time after irrigation in the first ten days of July. in order to promote the seedlings to improve the degree of Lignification and enhance the ability of overwintering, winter water was irrigated for the last time in late November.

2. Topdressing. When the seedlings of Robinia pseudoacacia were fixed, the first topdressing was carried out combined with the first irrigation, and urea 45~75kg/ hm ^ 2 was applied. At the end of June, combined with irrigation, the compound fertilizer mainly composed of nitrogen and phosphate fertilizer was applied twice, and the amount of fertilizer was 75~195kg/ hm ^ 2, and the fertilization was stopped at the beginning of August. It is best to rake the land in winter and early spring and apply rotten base fertilizer of 3000 jin to 5000 jin per mu. Spring soil preparation should be early, deep turning (more than 25cm), fine rake, leveling. In the soil preparation at the same time, 15 jin of black alum (ferrous sulfate) powder mixed with 5% phoxim 1 jin, and then mixed with 40 times the fine soil, sprinkled into the ground, in order to carry out soil disinfection.

3. Loosen the soil and weed. The seedling land should be ploughed in time after irrigation or rain, and it should be kept loose and grass-free.

4. Prevent the cold and survive the winter. The one-to two-year-old seedlings of Robinia pseudoacacia are vulnerable to autumn frost and spring wind drying, resulting in the drying of the aboveground part of the seedlings, so the one-year-old seedlings should be dug up after autumn for autumn afforestation or winter pseudo-planting, and afforestation should be provided in the second year and spring.

5. Transplant and cultivate big seedlings. To cultivate large seedlings needed for road, courtyard and urban greening, Yuanzhou District is generally transplanted from late April to early May, and the transplanting density mainly depends on the seedling cultivation specifications and years. Generally, the row spacing of four-year-old seedlings should be 50cm × 100cm. The longer the years of nursery stock cultivation, the larger the row spacing of transplanted seedlings. Hole planting is often used in Robinia pseudoacacia transplantation. before transplantation, the aboveground part should be cut off and the root strips damaged by splitting should be cut off. The root length should be kept at 20~30cm, the seedling roots should be dipped in pulp, and the seedling depth should be the same as the top of the root neck and the surface. The transplanted seedlings should be nurtured in time, such as watering and topdressing, loosening soil and weeding, preventing cold and overwintering, especially for flat stubble seedlings, such as shoot removal, sprouting, pruning and so on. choose the strong and upright branches as the trunk.

What is the difference between Robinia pseudoacacia and Robinia pseudoacacia

There are thorns on the locust branches, but there are no thorns on the locust branches.

The leaves of Robinia pseudoacacia were gray after withering, but there was no such phenomenon in Robinia pseudoacacia.

The raceme of Robinia pseudoacacia is drooping, while the raceme of Robinia pseudoacacia is rising.

The flowers of Robinia pseudoacacia are larger than those of Robinia pseudoacacia.

The pods of Robinia pseudoacacia are linear, while the pods of Robinia pseudoacacia are beaded.

The seeds of Robinia pseudoacacia are smaller and have black spots; the seeds of Robinia pseudoacacia are about the same size as those of cowpea and are black.

There are holes in the hilum of Robinia pseudoacacia seeds, but not in the navel of Robinia pseudoacacia seeds.

In addition, Robinia pseudoacacia is vulnerable to the harm of Robinia pseudoacacia inchworm, while Robinia pseudoacacia is not harmful to it.

The leaves of Robinia pseudoacacia are pointed, the branchlets are green, the trunk is shallowly lobed, the inflorescence is paniculate, and the pods are beaded.

Robinia pseudoacacia has concave leaves, non-green branchlets, deeply split trunks, axillary inflorescences and non-beaded pods.

Time: 2019-04-10 Click: