The main reason why peony leaves are easy to burn

Summer temperature is on the high side, peony leaves by strong light irradiation, sometimes there will be leaf tip, leaf edge yellow dry phenomenon. According to the observation and analysis of many years, the author talks about its causes and preventive measures.

- , peony leaf dry tip, dry edge reason

1. Alkaline soil reduces the absorption of water and nutrients by peony roots, resulting in nutritional imbalance. Summer high temperature sunburn, more aggravated the imbalance of water and nutrient supply and demand of plants, leaves are more likely to appear dry tip, dry edge phenomenon, serious whole leaves wither and dry.

2. The soil is too desertified and desertified, the water and fertilizer are easy to lose, the soil is easy to dry, and the peony grows poorly. In hot summer, due to the rapid rise of desertification soil surface temperature, transpiration increased, peony leaves a lot of water loss, resulting in leaf tip, leaf edge dry.

3. Poor soil In the soil with poor fertility, the plants grow thin and weak, the leaves are thin and pale, and the resistance is poor. Under the scorching sun, the dry tips and dry edges of the leaves are easy to occur.

4. Soil hardening affects the circulation and conversion of water, nutrients and air. Under strong light and high temperature, due to excessive evaporation of water, roots cannot absorb water and nutrients from the depths of the soil in time, while leaf tips and leaf edges are at the top and edge of leaves, which are most damaged by sunburn.

5. The soil fertility of continuous cropping is reduced, the nutrients and trace elements that can be absorbed and utilized are poor, the plant resistance is reduced, the diseases and insect pests are aggravated, and the leaf tips and leaf edges are easy to dry.

6, planting late plants planted too late, due to the temperature drop, the roots can not be frozen before the growth of fibrous roots, the next spring peony rapid germination growth, and roots can not absorb sufficient water, nutrients, in the sunny hot and dry summer, easy to appear peony branches and leaves wilting, causing leaves to shrink dry edges. Summer peony leaves easy to burn the reason summer temperature is high, peony leaves by strong light, sometimes there will be leaf tip, leaf edge yellow dry phenomenon. According to the observation and analysis of many years, the author talks about its causes and preventive measures. 1, peony leaf dry tip, dry edge of the reasons 1, soil alkaline soil reduced peony roots on water and nutrient absorption, resulting in nutritional disorders. Summer high temperature sunburn, more aggravated the imbalance of water and nutrient supply and demand of plants, leaves are more likely to appear dry tip, dry edge phenomenon, serious whole leaves wither and dry. 2. The soil is too desertified and desertified, the water and fertilizer are easy to lose, the soil is easy to dry, and the peony grows poorly. In hot summer, due to the rapid rise of desertification soil surface temperature, transpiration increased, peony leaves a lot of water loss, resulting in leaf tip, leaf edge dry. 3. Poor soil In the soil with poor fertility, the plants grow thin and weak, the leaves are thin and pale, and the resistance is poor. Under the scorching sun, the dry tips and dry edges of the leaves are easy to occur. 4. Soil hardening affects the circulation and conversion of water, nutrients and air. Under strong light and high temperature, due to excessive evaporation of water, roots cannot absorb water and nutrients from the depths of the soil in time, while leaf tips and leaf edges are at the top and edge of leaves, which are most damaged by sunburn. 5. The soil fertility of continuous cropping is reduced, the nutrients and trace elements that can be absorbed and utilized are poor, the plant resistance is reduced, the diseases and insect pests are aggravated, and the leaf tips and leaf edges are easy to dry. 6. Late planting plants are planted too late. Due to the drop of temperature, the roots cannot produce fibrous roots before freezing. In the spring of the next year, peony germinates rapidly, while the roots cannot absorb sufficient water and nutrients. In sunny and hot dry summer, peony branches and leaves are easy to wither, causing leaves to shrink and dry edges. Different peony varieties have different ability to resist high temperature sunburn. In the same plot, some peony varieties grow stout, leaves are plump, although exposed to strong sunlight, leaves rarely appear dry tip phenomenon, to late autumn still keep dark green leaves; while some varieties of leaves are mostly thin, light color, to summer sunburn resistance is slightly poor, leaves will appear more dry tip, dry edge, resulting in a large number of leaf spot disease, resulting in premature mildew. 2. Preventive measures 1. Peony should not be planted in saline-alkali land and flying sand land. If planting, saline-alkali land should be changed for planting, flying sand land should be added with appropriate amount of clay, continuous cropping land should be rotated, and hardened land with hard soil layer should be deeply ploughed to improve soil permeability. 2. Increase the application of organic fertilizer or compound fertilizer to improve soil fertility and promote the healthy growth of plants. 3, timely planting, drought should be watered in time, the soil with poor water retention should also be watered in time. Before summer, you can also set up a trellis to shade. 4. In May, 50% carbendazim 600 times solution or 70% thiophanate-methyl 800 times solution can be sprayed, and 0.3% potassium dihydrogen phosphate can be added. For barren soil, 0.2% urea can be added once every 15 to 20 days until the end of July. The above measures can effectively enhance peony growth, reduce sunburn damage, reduce the occurrence of dry tip and dry edge of leaves, and lay a foundation for good flowering next year. Causes and control measures of peony leaf burn in summer

Summer temperature is on the high side, peony leaves by strong light irradiation, sometimes there will be leaf tip, leaf edge yellow dry phenomenon.

- , peony leaf dry tip, dry edge reason

1. Alkaline soil reduces the absorption of water and nutrients by peony roots, resulting in nutritional imbalance. Summer high temperature sunburn, more aggravated the imbalance of water and nutrient supply and demand of plants, leaves are more likely to appear dry tip, dry edge phenomenon, serious whole leaves wither and dry.

2. The soil is too desertified and desertified, the water and fertilizer are easy to lose, the soil is easy to dry, and the peony grows poorly. In hot summer, due to the rapid rise of desertification soil surface temperature, transpiration increased, peony leaves a large number of water loss, resulting in leaf tip, leaf edge dry.

3. Poor soil In the soil with poor fertilizer, the plants grow thin and weak, the leaves are thin and pale, and the resistance is poor. Under the scorching sun, the dry tips and dry edges of the leaves are easy to occur.

4. Soil hardening affects the circulation and conversion of water, nutrients and air. Under strong light and high temperature, due to excessive evaporation of water, roots cannot absorb water and nutrients from the depths of the soil in time, while leaf tips and leaf edges are at the top and edge of leaves, which are also most damaged by sunburn.

5. The soil fertility of continuous cropping is reduced, the nutrients and trace elements that can be absorbed and utilized are poor, the plant resistance is reduced, the diseases and insect pests are aggravated, and the leaf tips and leaf edges are easy to dry.

6, planting late plants planted too late, due to the temperature drop, roots can not be frozen before the growth of fibrous roots, peony rapid germination growth in the spring of the second year, and roots can not absorb sufficient water, nutrients, in the sunny hot and dry summer, easy to appear peony branches and leaves wilting, causing leaves to shrink dry edges.