CN-122004234-A - Swiss apple fallen leaf accelerator and application thereof

Abstract

The invention belongs to the field of apple cultivation, and particularly discloses a Ruixueapple fallen leaf accelerator and application thereof. The invention relates to a Swiss apple fallen leaf accelerator which comprises a main component and an auxiliary agent, wherein the main component comprises urea, gamma-aminobutyric acid and trehalose, the auxiliary agent comprises a penetrating agent and a spreading agent, the penetrating agent is an organosilicon surfactant, and the spreading agent is orange peel essential oil. The urea and the concentration used in the invention can accelerate nitrogen reflux of the Swiss leaves, the gamma-aminobutyric acid and the concentration used in the invention can improve cold resistance of the tree, the trehalose and the concentration used in the invention can increase the content of soluble sugar in the tree, and improve the frost resistance of the tree. The defoliation agent provided by the invention is easy to prepare, easy to use and low in cost. The defoliation agent formula provided by the invention is used for 2-3 times, so that defoliation effects better than those of other technologies such as natural defoliation and pure urea treatment can be obtained. The defoliation promoting agent provided by the invention does not influence germination and tree growth in the next year after being used.

Inventors

• SUN LULONG
• LIANG JUN
• Jia Jindi
• HE XIAOXIAO
• CAI MIN
• ZHAO GUOXIANG

Assignees

• 西北农林科技大学

Dates

Publication Date

20260512

Application Date

20260130

Claims (10)

1. 1. A fallen leaf accelerator for the Swiss apples is applied to the leaves of the Swiss apples to make the leaves fall off from the tree body, and is characterized by comprising a main component and an auxiliary agent, wherein the main component comprises urea, gamma-aminobutyric acid and trehalose, and the auxiliary agent comprises a penetrating agent and a spreading agent.
2. 2. The swiss apple defoliation accelerator according to claim 1, wherein the main component comprises, by weight, 5% -9% of urea, 30-70 mM of gamma-aminobutyric acid and 20-mM-60 mM of trehalose.
3. 3. The snow apple fallen leaf accelerator according to claim 2, wherein the urea content is 7%, the concentration of gamma-aminobutyric acid is 50 mM%, and the concentration of trehalose is 40 mM.
4. 4. The swedish apple defoliation accelerator according to claim 1, wherein in the auxiliary agent, the penetrating agent is an organosilicon surfactant, the spreading agent is orange peel essential oil, the content of the penetrating agent is 0.5% -2.0% by weight, and the weight ratio of the penetrating agent to the spreading agent is 5:1-15:1.
5. 5. The snow apple fallen leaf accelerator according to claim 4, wherein the penetrating agent is silicone oil or dimethicone copolyol.
6. 6. The snow apple fallen leaf accelerator according to claim 4, wherein the content of the penetrating agent is 1.0% and the weight ratio of the penetrating agent to the spreading agent is 10:1.
7. 7. The snow apple fallen leaf accelerator according to claim 1, wherein the agent is wettable powder or water.
8. 8. A method for promoting fallen leaves of a Swiss apple tree is characterized by adopting the fallen leaves promoter as claimed in any one of claims 1-7, and specifically comprising the following steps: S1, preparing a diluent, namely diluting the defoliation accelerator with water; and S2, spraying the diluent, namely uniformly spraying the obtained diluent on the leaves of the Swingle apple trees to thoroughly wet the leaves.
9. 9. The method for promoting the defoliation of the Ruifer apple tree according to claim 8, wherein the weight ratio of the defoliation promoter to water is 1:6-1:7 when the dilution is performed in the step S1.
10. 10. The method for promoting the defoliation of the Ruifer apple tree according to claim 8, wherein the spraying is performed in the step S2 for 2-3 times at intervals of 7-14 days.

Description

Swiss apple fallen leaf accelerator and application thereof Technical Field The invention belongs to the technical field of apple cultivation, and particularly relates to a Ruixueapple fallen leaf accelerator and application thereof. Background The Swiss apples grow vigorously, stop growing difficultly in autumn, and fall leaves difficultly. In winter, the serious problems of drawing, drying, tree death and the like are easy to be induced in cold areas. The defoliation or defoliation-promoting treatment of the swiss apples is generally required based on specific requirements. Such requirements include (1) the need to avoid freeze injury and drainage. Because the growth of the Swiss apples is vigorous, the blades have strong tolerance to low temperature, the blades cannot be aged and shed as fast as other varieties in a slow cooling period after harvesting of fruits in autumn, so that the blades are extremely easily damaged by sudden and cliff-breaking strong low temperature, the blades and autumn tips lose water in a large amount after being frozen, and a large amount of nutrients are consumed for repairing injured tissues, so that the storage nutrients of trees are insufficient, and the growth vigor and the flower and fruit setting of the trees in the coming year are affected. (2) is needed to facilitate winter pruning. The blade is not dropped, so that inconvenience is brought to observing the tree structure and executing a specific pruning method, and the pruning efficiency is reduced. (3) autumn transplanting is needed. In the autumn in the rainy producing area, the survival rate of the tree body can be obviously improved by autumn transplanting, and the loss of the moisture of the tree body can be effectively reduced by removing the leaves before transplanting, so that the survival rate of the plant is ensured. (4) is convenient for seedling raising and warehousing in a nursery. The seedling is convenient to be lifted, tidied, bundled and put in storage after the fallen leaves. Manual leaf picking is a main means for promoting the leaf falling of the Swiss apples at present, but the efficiency is low and the cost is high. The manual leaf picking can also cause a great deal of loss of apple leaf nutrients, and the nutrient reserve of the tree body is insufficient, so that the sprouting and the growth of the tree body in the next year are influenced. In addition, the manual leaf picking can cause a certain degree of mechanical injury to the tree body, aggravate the loss of the water content of the tree body and increase the occurrence probability of the leaf scald and the rot of the branches. The chemical defoliation technology is applied to field crops and garden plants, and common defoliation components include potassium iodide, herbicide (diuron or thidiazuron), ethephon and the like, but the inherent defects of removing leaves by adopting the potassium iodide, the herbicide and the ethephon can be applied to specific requirements. For example, potassium iodide is costly, herbicides can cause plant death, ethephon effects are unstable, and post-growth is affected. Therefore, the components are not widely used on fruit trees, or have great damage to the tree body, potential safety hazard exists, or the use effect is unstable. Therefore, the development of the special defoliation accelerator which has strong pertinence and is environment-friendly and can synchronously improve the stress resistance of the tree body is very important. Disclosure of Invention The invention aims to solve the technical problem of designing a Swiss apple fallen leaf accelerator and application thereof, wherein the accelerator can effectively promote timely falling of leaves, obviously enhance cold resistance of a tree body, and has no residue on the safety of the tree body and no influence on the next year growth and development, thereby solving the prior technical problem. In order to solve the technical problems, the invention provides a swedish apple fallen leaf accelerator, which is applied to the swedish apple leaves to enable the leaves to fall off from a tree body and comprises main components and auxiliary agents, wherein the main components comprise urea, gamma-aminobutyric acid and trehalose, and the auxiliary agents comprise penetrants and spreading agents. In the invention, the main component comprises, by weight, 5% -9% of urea, 30 mM% -70 mM% of gamma-aminobutyric acid and 20% -mM% -60 mM% of trehalose. In the present invention, the urea content is 7%, the concentration of γ -aminobutyric acid is 50 mM%, and the concentration of trehalose is 40 mM. In the auxiliary agent, the penetrating agent is an organosilicon surfactant, the spreading agent is orange peel essential oil, the content of the penetrating agent is 0.5% -2.0% by weight, and the weight ratio of the penetrating agent to the spreading agent is 5:1-15:1. In the invention, the penetrating agent is silicone oil or dimethicone copolyol. In the invention,