Fruit tree leaf yellowing
Excessive rainfall can easily cause the supply of main nutrients to be full or even excessive, and it will also cause the supply of some elements to exceed supply, which leads to the phenomenon of yellow leaves in fruit trees. Therefore, after the rain, we should do a good job of top dressing in time, combining underground top dressing and foliar fertilization to supplement the nutrient elements lacking in fruit trees. Before administration, observe the symptoms of element deficiency and supplement the corresponding elements. At the same time, it is necessary to chemically control the overgrowing fruit trees.
Properly fertilize and increase fertilizer to help restore tree vigor. Use 0.3% potassium dihydrogen phosphate solution to spray once every 10 days or so, and spray for 2 to 3 times. Foliar spraying can be carried out at the same time as spraying. Orchards that have been severely affected should adopt multi-point method of topdressing phosphorus and potassium fertilizer, fruit tree special fertilizer, diammonium phosphate, etc., about 40 kilograms per mu.
Cause rotten roots
The main reason for rotten roots is that after heavy rains, the orchard is low-lying or drainage is not in place. Due to the excessive accumulation of water, the root system is hypoxic, which will deplete the roots and affect the supply of nutrients, causing the leaves to quickly wither and the roots to rot. In this case, remove the stagnant water. After violent storms and rains, individual orchards have low-lying terrain and accumulation of water after the rain, which will cause anaerobic respiration of the roots of the fruit trees, which will cause some roots to reenter the roots, affect nutrient supply, and cause rapid leaf wilting in a short period of time, and the phenomenon of root rotten. Ditch can be drained, quicklime is applied to acres after shallow turning and sprayed with Aiduochou for sterilization.
Flower bud differentiation is hindered
The prosperous growth of fruit trees caused by heavy rains will affect the conversion from vegetative growth to reproductive growth of fruit trees, so that the nutrient distribution of fruit trees is less effective on flower bud differentiation, which will hinder flower bud differentiation and poor differentiation, which will affect the yield in the coming year. Therefore, the summer pruning work is particularly important. It is necessary to remove too many branches on the back in time, or to adjust the tree vigor by pulling the branches, so as to balance and coordinate the supply of nutrients. It can also be used to spray potassium dihydrogen phosphate and growth inhibitors to promote the benign process of flower bud differentiation.
Pruning
Severe storms will cause the orchard to be messy and decay. The orchard should be cleared in time, and pruning should be strengthened after the disaster. The fruit and leaves in the orchard should be completely removed from the fruit orchard, and the orchard should be pulled outside the orchard to dig a hole and bury it deeply. Cut off the branches and remnants, clean them out of the garden and burn them together, so as to reduce the infection of germs and promote ventilation and light transmission. If the fruit bag is damaged and the fruit is not damaged, remove the damaged bag, spray it with a fungicide, and then re-bag the bag to straighten the soil after the liquid is dry.
For fruit trees that slanted or fell on the ground after a disaster, the soil should be straightened up in time, and the soil should be stomped to avoid damage to the roots again.
Whether the orchard management is in place directly affects the growth of the tree, the output and quality of the fruit, etc. Therefore, the management of the orchard after the rain cannot be ignored, and the management work must be in place.
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â… Product Composition: polydadmac
â…¡ Product Properties
The appearance of this product is colorless to pale yellow viscous liquid. It is soluble in water. It has goodhydrolyticstability and high adaptability to PH value changes. It`s safe and non-toxic. Its freezing point is about -2.8℃, specific gravity is about 1.04/cm3 and decomposition temperature is 280-300℃. It`s polymeride AKD maturing agent of high charge density. Emulsion provides strong cationic component promotive and protective agent and promotes curing effect. This product is added directly into the synthesis process of intermediates or added a certain ratio in emulsion. This product can be added more in the papermaking system with heavier anionic trash, as the pulp potential equilibrium to play a dual role of sizing enhancement and forcing ripening.
III. Quality indicators;
Appearance: colorless to faint yellow thick liquid Solid content: 40±1%
PH value: 4.0~7.0 viscosity (mpa.s, 25℃): 7000-12000
IV. Application:
This product is applied in alkaline sizing system of AKD (Alkyl Ketene Dimer) to restrict largely the hydrolysis and migration aptitude of AKD. [The third generation" AKD is mainly used for the making of multipurpose duplicating paper filled by precipitated calcium carbonate. 60% cationic polymer can adhere to the fiber after the paper containing cationic polymer being reused, by which enhance hydrophobicity of the paper. Added to waste paper deinking agent, its cationic hydrophilic group adheres to ink particles easily, especially for hydrophobic aniline ink. After flotation, the whiteness of pulp increased. This product is also applied as cationic surfactant in pitch control agent for pulping.
Curing Agent,Poly Dadmac,Paper Curing Agent,Adhesive Curing Agent
Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com