1, spruce cone rust.
Control methods: spray 0.1% 2,4-D within 200 meters of the seed garden to kill Rosaceae plants and thick plums. Severe diseased wood was cut off. When choosing the cones, disease-free wood is strictly selected. Create coniferous and broad-leaved mixed forests.
2, spruce red spot.
Control methods: 75% chlorothalonil is used for the spruce pine forest around the nursery and the spruce seedlings on the seedbed are sprayed twice from the end of May to the beginning of July for 3 consecutive years. The control effect is good.
3, spruce felt blight. The excessive density of stands is the main precipitating factor of the disease.
Control methods: Take forestry, pruning, light cutting and other forestry measures for plantation forests, and the effect is good.
The process of afforestation of spruce is a relatively long process. We must not be impatient and must be patiently cared for in order to cultivate high quality seedlings.
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