Planting Technology Lists
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Hardwood cutting technique of Robinia pseudoacacia
1. Collection and storage of seed strips at the end of November, excellent clone seed strips of the same year were collected from the ear-picking nursery, or the stems of current-year seedlings used for cutting and afforestation were collected, the short spikes of 18-20cm were cut, and at least 2 buds were left per cuttage. The distance between the upper cut and the upper bud is 1. 0-1.5cm, and the lower cut is cut into a single Mallet shape. After 50 cuttings are cut, put them in a cool outdoor place and bury them with clean fine river sand (water content 60%). A layer of cuttings, covered with a layer of sand, try to make each stick see sand. The thickness of sand cover on each layer of cuttings is 3-5cm, but
2019-01-15 -
What are the characteristics of black locust aphid? What is the method of prevention and control?
Robinia pseudoacacia aphid harms many kinds of legumes, such as Robinia pseudoacacia, locust tree, Amorpha fruticosa and so on. As an adult. The new shoots of Robinia pseudoacacia are clustered by nymphs to suck sap, which causes the new shoots to bend, the young leaves curl, the branches can not grow, and its secretions often cause coal fouling disease. The wingless aphid is about 2 mm long, oval, black and glossy, with obvious hexagonal reticulation on the back of the head, chest and abdominal segments 1-6; horizontal striations on the abdominal segments 7 and 8; winged aphids, long ovoid, black and smooth, wings gray-white, transparent. Robinia pseudoacacia aphids occur for more than 20 generations a year. Mainly with
2019-01-15 -
The occurrence regularity of locust aphids?
The occurrence regularity of Robinia pseudoacacia aphids: more than 20 generations a year, overwintering with wingless solitary aphids, nymph aphids or a small number of eggs in the roots, stems and leaves of leguminous plants such as wild alfalfa, propagating on overwintering hosts in March and April the following year, and producing winged parthenogenetic aphids that migrate to Robinia pseudoacacia, locust trees and other leguminous plants in late April. It is harmful all the year round, especially in the early flowering stage of Robinia pseudoacacia, and the winged aphid migrates to its host in October and overwinters. The optimum breeding temperature for aphids is 19 to 22 degrees Celsius, and the relative humidity is 65% to 70%, when the temperature is lower than
2019-01-15 -
Biological characteristics and control strategies of Exoplectria pseudoacacia
Acacia exocellata. It is distributed in Robinia pseudoacacia forest areas of Anyang, Puyang, Xinxiang, Kaifeng City and other ancient Yellow River channels in Henan Province. It mainly harms Robinia pseudoacacia. In large occurrence years, it can harm jujube trees and crops. This insect has gluttony and can eat all the leaves of pruning and whole trees in a short time. In high temperature and drought years, the leaves can be eaten up 2~3 times a year, causing the upper part of the tree to die, sprouting from the middle and lower parts of the trunk, causing serious harm to the growth of the tree. Prevention and control methods: (1) construction
2019-01-15 -
The occurrence regularity of Robinia pseudoacacia.
The occurrence regularity of Robinia pseudoacacia: 4 generations a year, overwintering as pupae in topsoil. Eclosion began in early April of the following year, mating and oviposition, the egg period was 15 days, the larval stage was about 25 days, the pupation began in early May, the pupal stage was about 10 days, and the adult life span was about 5 days. The second generation of adults appeared in the first and middle of July. The third generation of adults appeared in the middle and late August, and the last generation of larvae harmed to the middle of September. After maturing, they were pupated and overwintered. The eggs lay in the thick skin seams below 2 meters from the base of the trunk, accumulated into blocks and covered with gray hairs. Newly hatched
2019-01-15 -
What are the characteristics of Robinia pseudoacacia?
Black locust diamondback moth, also known as bean diamondback moth. It is mainly harmful to Robinia pseudoacacia, soybeans, vines and so on. The larvae feed on the leaves, and in serious cases, the leaves can be eaten up. The adult worm has a body length of 40mm to 50mm, a wingspan of 100mm to 120mm, yellow-brown body wings, dark purple of the head and forechest dorsal plate, a pale white semicircular spot near the center of the forewing, six wavy stripes on the wing surface, and a dark brown twill on the top of the wing to divide the top angle into two parts; the rear wing is dark brown and dark brown in the middle. Egg, oval, yellow and white. Larva, the last instar is about 80 mm.
2019-01-15 -
What is the occurrence regularity of Robinia pseudoacacia (Plutella xylostella)?
The occurrence regularity of Robinia pseudoacacia (Plutella xylostella): one generation a year occurs in Hebei, Shandong, Jiangsu, Anhui and other places, and the mature larvae drill into the soil 10 to 15 cm deep to overwinter. Pupation began in the first and middle June of the following year. The pupal stage ranges from 10 to 15 days. The adult Eclosion occurred in the first and middle of July, and the peak of emergence was in the middle of July. The adults lie still in the branches and leaves during the day and begin to move in the evening, and the adults have phototaxis. Generally, eggs begin to lay eggs 3 hours after mating, and the eggs are mostly laid on the back of the leaves and a few on the front. The average number of eggs laid by each female is about 350. Adults 7 to 10
2019-01-15 -
How to manage Robinia pseudoacacia seedlings?
The management method of Robinia pseudoacacia seedling stage is as follows: the first seedling is carried out when the seedling height is 3 to 4 cm, and then 1 or 2 times according to the seedling growth, and the last seedling is carried out when the seedling height is 10 to 15 cm. After fixing the seedlings, there are about 10,000 plants per mu. Robinia pseudoacacia is afraid of waterlogging and should be drained in time after heavy rain. After 3 or 4 true leaves of the seedlings, chemical fertilizer was applied once and again in July, and generally no longer irrigated and fertilized after August.
2019-01-15 -
Tillering Regeneration technique of Robinia pseudoacacia
1. After the clear cutting of Robinia pseudoacacia, the accumulation of a large number of residues and shrub weeds on the site are the obstacles to sprouting and regeneration, which should be cleared in time. The main purpose is to improve site conditions and sanitary conditions, to create a favorable environment for the growth of young trees, and to promote the closure of young forests as soon as possible. two。 In order to shorten the period of forest cultivation, comprehensive closure measures were taken for the felling sites of Robinia pseudoacacia. Cattle and sheep specially nibble on the tender shoots of young trees, which do great harm to the sprouting of Robinia pseudoacacia. Special personnel should be set up to supervise and protect them, and grazing should be strictly prohibited. Cutting grass and collecting firewood are strictly prohibited.
2019-01-15 -
Root-burying Seedling technique of Robinia pseudoacacia
1. Land selection and preparation: the nursery should choose sandy loam or loam soil with flat topography, convenient drainage and irrigation, deep soil layer, fertile soil and groundwater level below 1.5-2m. Low-lying land, saline-alkali land and clayey soil with too high groundwater level are not suitable to be nurseries. 2. Select the seed root: the 1-2-year-old seedling root should be selected, the remaining root after coming out of the nursery or the pruned seedling root. The best root length is 10-20Cm, and the diameter of big head is 1.5-4Cm. The collection time of seed root can be carried out from defoliation to pre-germination.
2019-01-15