Because there are more complicated relationships between different species, the other trees that are planted around the orchard and planted in the garden must be carefully selected so as not to affect the normal growth and development of the fruit trees and cause unnecessary losses. Here are some tree species that are not suitable for planting around orchards and fruit tree species that are not suitable for mixed cultivation.
Eucalyptus vineyards should not be planted near vineyards. Because the root secretions of eucalyptus contain organic compounds that have a strong inhibitory effect on the growth and development of the grapes, where lighter roots reach, lighter crops will result in lower yields, and plants will die or even cause death. destroy.
Hedgehog is not suitable for planting hedgehogs around apple orchards, pear orchards, vineyards, and plum gardens, and hedgehogs must not be used for fences. Because the hedgehog is an important parasitic site for insects and other pests, and the elephants infest a variety of fruit trees, sucking stems and leaves and fruit sap, resulting in the trunk of the trunk dry leaves, tree vigor decline, fruit deformation, color is not good, loss of food value, serious Affect the fruit production and quality. And the anthracnose pathogen on the Robinia pseudoacacia will cause a lot of deciduous fruit trees; the tannins substances secreted by the Robinia pseudoacacia have a strong inhibitory effect on many kinds of fruit trees, which can make the fruit trees not produce results for many years.
Tung Tung tree is the main parasitic area of ​​the purple feather pathogen, most of the roots of fruit trees can be infected by the bacteria to infect the disease. Those with mild disease have poor growth, debilitating tree vigor, yellowing leaves and falling leaves ahead of schedule; those with severe disease often have dry branches and leaves, and the whole plant is dead. The damage to the orchard is significant.
Pine pine spores can harm many kinds of fruit trees, and it is particularly serious for pear trees. It can even damage pear trees beyond 300 meters, causing yellow spots on the leaves of pear trees, which cause bristly growth, resulting in reduced fruit setting rate and fruit deformities. Seriously affect the quality and yield of pears. In the development of orchards, especially pear orchards, they should stay away from pine forests, preferably more than 500 meters, to prevent pine spores from harming fruit trees.
Cypress trees or apple orchards should not be planted around cypress orchards, because cypress is an intermediate parasite of Pyricularis rot. It is an important biological chain for the survival and damage of the bacterium, and the disease must be transferred to cypress trees after harming pears and apple trees each year. Over winter, the following year continues to harm pear trees and apple trees, which seriously affect the growth and fruit of the fruit trees.
Mulberry trees such as mulberry trees, plums, apricots, cherries, etc. should not be planted near trees, because the main pest of mulberry trees, the mulberry whiteworm, will spread to the fruit trees, and the nymphs and female adults will colonize the fruit tree branches. The branches are stunted, and the dead ones cause death and even the whole plant is dead.
Walnut orchards should not be planted near the walnut orchard. Since the walnut tree roots and cortex contain volatile substances, walnut pods will cause separation of cell walls of various fruit trees, destroy cell tissues, affect growth, and cause plant death.
The following species of fruit trees should not be mixed: pears and apple trees, because the pear tree is a poisonous parasitic part of apple rust, which will prompt the onset of apple trees. Therefore, pear and apple trees cannot be mixed together and should not be too close to each other; It is peach, pear, and apple trees. Normally, peaches are riper than pears and apples. First-generation larvae of pests such as peach borer, pear-eating fly, and peach aphid feed on peaches, and second-generation larvae feed on pears. And apple. If these several kinds of fruit trees are mixed, it will provide a rich and continuous food for the pests, which will increase the damage. Therefore, peach trees and pear trees and apple trees should not be mixed; the third is apple trees and cherry trees, and the two tree species are mixed and mixed. Suppressed each other.
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