First, the reason
1, mainly due to high planting density, the results after the load, the pH value of the soil lead to peach root iron deficiency or iron absorption can cause iron deficiency.
2. Pruning after fruit harvesting is too heavy. The fruit is harvested and then retracted and trimmed. After harvesting, a lot of vegetative shoots and leaves are lost on the shoot, causing insufficient supply of nutrients for underground root growth, affecting the absorption of iron by roots, resulting in undersupply of nutrients in the shoots. .
3, more fertilizer, less organic fertilizer. The long-term heavy application of chemical fertilizers results in soil compaction, poor physicochemical properties, poor soil, poor structure, low organic content, and reduced soil-active bacteria, which affects the decomposition and release of soil nutrients. Soil viscosity, poor permeability, affect the growth of the root system.
4, root disease. Peach root disease is another important cause of peach leaf yellowing. Plants suffer from root cancer, purple feather disease, and root decay, which affect plant root growth and impede the absorption of nutrients and water by roots, resulting in trees. Potential weakness, severe plant death, control
1. Control of iron deficiency: (1) Sparse planting; (2) Reasonable loading; (3) Spraying foliar fertilizer and spraying foliar surface with 0.1% ferrous sulfate plus rice vinegar essence 500 times. (4) Infusion control: When there are individual iron shoots on the plants, they are bottled with 0.1% ferrous sulfate and 0.5% acetic acid mixture on the tree, and the iron-deficient shoots are directly inserted into the bottle. It is also possible to use the above-mentioned mixed solution in an infusion bottle, hang it upside down on the branch, make a hole in the trunk, and infuse it with a medical infusion set.
2, after fruit picking after light fruit cutting, the result of the branch pruning, mainly sparse, remove the back branches, upright branches, thin branches, branches, branches, cross branches, combined with manual picking, twisting tip, take branches, etc. Keep certain nutritional branches to balance the tree potential.
3. Reasonable fertilization, application of high-quality organic fertilizers, control of the soil with heavy clay soil, application of high-quality organic fertilizers in autumn, improvement of soil permeability, and improvement of soil physical and chemical properties. If the soil is more viscous, fill some river sand in the colonization pit, which has a certain effect.
4, prevention and treatment of root diseases. Check whether there is any disease in the seedlings. Use a 1% copper sulfate solution or 2% lime water to dip the roots for 1 minute. You can also use K-84 (Canaconing) to dip the roots for 5 minutes, and then colonize. If a root cancer plant is found, use The root nodules were removed with a quick knife and disinfected with 1% copper sulfate 100 times.
1, mainly due to high planting density, the results after the load, the pH value of the soil lead to peach root iron deficiency or iron absorption can cause iron deficiency.
2. Pruning after fruit harvesting is too heavy. The fruit is harvested and then retracted and trimmed. After harvesting, a lot of vegetative shoots and leaves are lost on the shoot, causing insufficient supply of nutrients for underground root growth, affecting the absorption of iron by roots, resulting in undersupply of nutrients in the shoots. .
3, more fertilizer, less organic fertilizer. The long-term heavy application of chemical fertilizers results in soil compaction, poor physicochemical properties, poor soil, poor structure, low organic content, and reduced soil-active bacteria, which affects the decomposition and release of soil nutrients. Soil viscosity, poor permeability, affect the growth of the root system.
4, root disease. Peach root disease is another important cause of peach leaf yellowing. Plants suffer from root cancer, purple feather disease, and root decay, which affect plant root growth and impede the absorption of nutrients and water by roots, resulting in trees. Potential weakness, severe plant death, control
1. Control of iron deficiency: (1) Sparse planting; (2) Reasonable loading; (3) Spraying foliar fertilizer and spraying foliar surface with 0.1% ferrous sulfate plus rice vinegar essence 500 times. (4) Infusion control: When there are individual iron shoots on the plants, they are bottled with 0.1% ferrous sulfate and 0.5% acetic acid mixture on the tree, and the iron-deficient shoots are directly inserted into the bottle. It is also possible to use the above-mentioned mixed solution in an infusion bottle, hang it upside down on the branch, make a hole in the trunk, and infuse it with a medical infusion set.
2, after fruit picking after light fruit cutting, the result of the branch pruning, mainly sparse, remove the back branches, upright branches, thin branches, branches, branches, cross branches, combined with manual picking, twisting tip, take branches, etc. Keep certain nutritional branches to balance the tree potential.
3. Reasonable fertilization, application of high-quality organic fertilizers, control of the soil with heavy clay soil, application of high-quality organic fertilizers in autumn, improvement of soil permeability, and improvement of soil physical and chemical properties. If the soil is more viscous, fill some river sand in the colonization pit, which has a certain effect.
4, prevention and treatment of root diseases. Check whether there is any disease in the seedlings. Use a 1% copper sulfate solution or 2% lime water to dip the roots for 1 minute. You can also use K-84 (Canaconing) to dip the roots for 5 minutes, and then colonize. If a root cancer plant is found, use The root nodules were removed with a quick knife and disinfected with 1% copper sulfate 100 times.
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