Planting Technology Lists
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Picea koraiensis
Alias: red smelly, tiger tail pine, Korean spruce, spruce with ridge scientific name: Piceakoraiensis Nakai family: Pine family spruce distribution: distributed in the northeast Xiaoxing 'anling, Jilin mountain area 1400--1800 meters above sea level zone, North Korea and the Soviet Union Wusuli area also produced. Shade-tolerant, shallow roots. It has strong adaptability and can grow under different site conditions except marshy zone and dry sunny slope and ridge in its distribution area. Description: Evergreen tree, tree
2019-01-15 -
Control of thick plum cone rust of spruce
Spruce thick plum cone rust occurs in Inner Mongolia, Jilin, Heilongjiang, Sichuan, Yunnan, Xizang, Shaanxi, Gansu, Qinghai, * and other places in China. The disease harms thick branch spruce, yew spruce, Lijiang spruce, oil wheat spruce, fish scale spruce, Xueling spruce, * spruce and so on. Symptoms: the disease harms the positive scales of female cones. The susceptible scales are twisted, anti-curled and disordered. There are many purple-brown globules on the front, which are arranged in a layer, which are the sporidium of the pathogen, and sometimes the spores are also produced on the back of the scale.
2019-01-15 -
Control of spruce red blight
In recent years, with the increase in the number of spruce planting, spruce red blight occurred seriously, and some closed forest belts were as high as 50%, seriously weakening the tree potential and even causing dead trees. The incidence of the disease is rapid, from the bottom of the tree to the tree, the outer edge of the crown to the inner chamber, the base of compound leaves to the top. As many as 10 days, as little as 1 week, can cause the whole plant leaves to turn yellow, and then fall off. The disease is caused by fungi. When the temperature suddenly changes and the humidity increases, the tree will become sick. The diseased leaves appear small brown spots at the beginning, then expand into dark brown, and the diseased spots are produced when the rain is wet.
2019-01-15 -
Picea koraiensis
Family and genus: Pinaceae alias: morphological features: evergreen trees, up to 25 m high, DBH 50 cm; bark white or grayish white, divided into irregular thick oblong pieces; 1 or 2-year-old branches orange-red or yellowish brown, short hairs or glabrous, slightly powdery, old branches grayish; winter buds conical, brown, slightly resinous, bud scales persistent, apex reflexed. Leaves subulate, ±curved, 1-2 cm long and 1.5-2 mm wide, apex acute, cross-sectional rhomboid, with 4-6 stomatal lines on each side. Cone length
2019-01-15 -
Robinia pseudoacacia dry rot
Symptoms: the disease harms the branches of young trees to big trees, causing the branches to wither or the whole plant to die. Big trees occur mainly at the base of the stem and a few at the bifurcations of the upper branches. The base of the tree was killed, there were no obvious symptoms on the outside, the interior of the bark was discolored and rotten, there was a bad smell, and the surface of the xylem produced brown to dark brown irregular spots. The disease spot continues to expand, encircling the tree trunk for a week, causing the branches above the disease spot to die, and the leaves yellowing and withering. The main stem of the shoot or young tree was damaged, and the diseased tissue rotted in the form of water stains, resulting in obvious ulcer spots, slightly sunken, and the margin purplish brown.
2019-01-15 -
Comprehensive prevention and control of spruce sowing seedlings in greenhouse
In order to shorten the cultivation years of spruce seedlings in high and cold mountain areas, greenhouse is usually used to raise seedlings. The special environment of the greenhouse creates conditions for the breeding and spread of all kinds of diseases that cause the quenching of spruce seedlings. Improper prevention and control will lead to seedling failure. In order to prevent the collapse of newly sown spruce seedlings in greenhouse, we should adhere to the principle of "prevention first and comprehensive control". 1 quenching symptoms, which can be divided into four types: (1) Seeds before sowing and ununearthed buds rot and die in the soil.
2019-01-15 -
The insect on the edge of the vegetable field-the yellow poplar silk borer
The flowers bloom in spring and the insects begin to move. During the recent activities of science and technology going to the countryside, it was found that a pest, "boxwood silk borer", began to occur and damage on the roadside of the park. The yellow poplar silk borer is one of the common pests in plants, such as yellow poplar, melon seed, big leaf yellow poplar, small leaf yellow poplar, sparrow tongue yellow poplar, spoon leaf yellow poplar, Korean yellow poplar, holly and so on, which occur in Shanghai and other provinces and cities. Shanghai has three or four generations in a year, and the times overlap seriously. Usually spring starts in March, pupation begins in mid-April, Eclosion begins in late April, and the first generation is young in early May.
2019-01-15 -
Control of diseases and insect pests of oleander
1. After aphids are found, spray the plants with 800 times of 40% dichlorvos emulsion or with the aqueous solution of cigarette butts. When the amount is small, brush can be used to remove them. Other control methods refer to rose, red string pest control section. 2. Scale insects damage branches and leaves. Control method: spray plants with 2000 times solution of Jiesha. Other control methods refer to Ziwei pest control. 3. Black spot disease is easy to occur in high temperature and humidity, damaging leaves. 50% carbendazim 500 times solution or thiophanate-methyl 600 times solution can be sprayed after onset. Other control methods
2019-01-15 -
Oleander willow leaf peach red for half a year
Alias: Willow leaf peach, half a year red family: for oleander, oleander origin: originating in Iran, now widely planted in tropical and subtropical areas; cultivated in various provinces and regions of our country. Morphological features: evergreen shrubs, up to 5 meters high, aqueous, glabrous. Leaves 3 Mel 4 whorled, opposite in lower part of branches, narrowly lanceolate, 11-15 cm long and 2 mi 2.5 cm wide, light green below; lateral veins flattened, densely parallel. Cymes terminal; calyx erect; Corolla crimson, fragrant, double
2019-01-15 -
The genus Prunus
Latin name: ThevetiaL. English name: Thevetia introduction: shrubs or small trees; with lotion. Leaves alternate, pinnately veined. Cymes. Flowers large; calyx 5-parted, with glands at inner base of lobes; Corolla funnelform, Corolla tube short, lower cylindric, throat with 5 hairy scales, Corolla lobes wide; stamens 5, born in crown tube throat, anthers separated from stigmas; no disk; ovary 2-loculed, 2 ovules per locule. Drupe, hard. About 15 species, distributed in tropical America and
2019-01-15