True cypress genus, 75cm high, branches spread along the ground, dense branches, branches spread obliquely upward. Cones are nearly spherical, black when mature, with 2-3 seeds. They are often used to make bonsai, suitable for water, cliffs, inclined stems, jungles, floods and droughts, dry roots, lying dry and other forms. Today, Bian Xiao will briefly talk about the conservation guidelines and pest control measures of Baizhen bonsai.

Maintenance guide and pest control measures of Baizhen bonsai

Guide to maintenance of Zhenbai bonsai

1. The plastic bonsai of real cypress should be maintained in the shade for 20 days before it can be maintained normally. During the curing process, it is necessary to spray more foliar water to keep the basin soil moist and free of water.

2. Strengthen the daily management of water and fertilizer, and apply dilute fermented cake fertilizer solution every 15 days in the growing season.

3. The shoots of true cypress grow rapidly, so in order to maintain a beautiful tree shape, buds are collected from September to June at 65438+1October every year, mainly to remove the parts that are not conducive to ornamental purposes, such as small bud heads, symmetrical branches, small axillary branches and downward growing shoots, so as to improve ornamental value.

Maintenance guide and pest control measures of Baizhen bonsai

Second, pest control of real cypress bonsai

1, true cypress rust

(1) Harm: The pathogen does harm from August to September, only 1 time a year, but the damage time is long, which affects the growth of plants, leads to the decline of trees, and finally the big branches gradually wither and fall off.

(2) Control: Strengthen cultivation management, apply fertilizer rationally, and improve plant disease resistance; Choose 150 times bordeaux solution or 25% triadimefon wettable powder 1000 times solution for spray control; 165438+ 10 to March of the following year, juniper juniper was sprayed with 3 ~ 5 Baume sulfur mixture 1 ~ 2 times or 25% triadimefon wettable powder 1000 times.

2. Yellowing disease

(1) Yellowing disease is not contagious.

(2) Prevention: Choose loose, fertile and breathable pot soil; In daily maintenance, use more organic fertilizer. Spraying a mixture of 0.2% potassium dihydrogen phosphate and 0. 1% ferrous sulfate on the leaves.

3. Starscream

(1) damage: white spots appear when the injury is mild, and turn grayish yellow when the injury is severe, resulting in dry leaves due to dehydration, which seriously affects the growth and appreciation of trees.

(2) Control: spraying 20% wettable powder (or 15% pyridaben EC) 1500 ~ 2000 times of pyridaben or spraying 800 ~ 1000 times of dicofol to control pests.

Maintenance guide and pest control measures of Baizhen bonsai

4. Beetles of Cypress, Coleoptera and Beetles.

(1) damage: damage the bark and xylem surface of Platycladus orientalis and Sabina vulgaris, destroy the transportation function and accelerate the death of Sabina vulgaris.

(2) Prevention and control: strengthen fertilizer and water management and cut off new dead branches in time; Brush off the old bark of cypress with a coarse brush, and then spray 800 ~ 1000 times of beta-cypermethrin EC for control.

5. Cypress and Monochamus alternatus

(1) Harm: Harm to Platycladus orientalis, Sabina vulgaris, Sabina vulgaris, etc. Seriously, it will lead to the death of the whole plant.

(2) Prevention and control: strengthen the management of fertilizer and water, and loosen the soil frequently; Brush off the old bark of cypress to kill pests; Soak in 800 times of beta-cypermethrin and chlorothalonil solution for 2 hours or irrigate the roots; During chemical control, 2.5% deltamethrin EC or 800 ~ 1000% omethoate EC can be sprayed.