The production level of the old orchards could not be realized. It is a common problem in the production of fruit in various regions. Due to improper management over the years, many old fruit trees are plagued by diseases, the tree vigor is weak, and the yield is extremely low. For example, apple trees, many fruit growers all over the country believe that the growth of old trees is more than twenty years old, and the reduction in production is a normal phenomenon, and many people believe that no value has been used to destroy trees and trees. In fact, if these trees are properly managed, they are at the peak of the result. If the trees are rebuilt, they will affect the profits for many years. In order to solve the problem of rejuvenation of old fruit trees, the author started to explore the method of rejuvenation of old fruit trees in Juye County in 2009. Juye County is located in the plains of Shandong's southwestern Shandong Province and has a certain area of ​​flat apple. However, in the low-altitude plain area, the summer rainfall is unfavorable in terms of climatic conditions. It is not Apple's best suitable habitat. In addition, local people have low levels of fruit tree management, and disease in the orchards such as ring vein disease and defoliation disease are widespread. The test garden was selected in the village of Yiguantun Village, Tianzhuang Town in the county. The orchard area is about 3 acres and 120 apple trees are planted. The varieties include Fuji, short-stemmed red stars, Gala, early morning glow, and Granny Smith, etc. In 1984, most of the trees were about 25 years old. Over the years, the park has been poorly managed by its owners because of its poor management. Many old fruit trees have been rotted with only half of the tree trunks and used them as waste gardens. In order to try to convince the owner not to shave trees.
Considering that the main diseases of fruit trees are mostly caused by poor root development, the rejuvenation measures of old trees should start from the restoration of orchard soil and the growth of fruit tree roots. The main measures taken were:
First, the orchards stopped using raw fertilizers, including unfermented chickens, ducks, and pig manure.
The second is to verify and screen the effects of some microbial organic strains, and specially select high-quality strains to ferment and produce microbial organic fertilizers for use in test trees.
The third is to consider the effect of calcium on the growth of fruit tree roots. There is a certain amount of available calcium fertilizer added to each fertilizer according to the tree size.
The fourth is the spraying of microbial nutrient solution on the foliage to promote further development through tree absorption.
The fifth is to use light trim on pruning, not considering the tree shape, but first to increase the amount of branches and leaves of the fruit tree so that the old tree can generate a large number of shoots. After the old tree grows, the pruning branches are used to make flowers.
In order to observe the effects of the above measures, other aspects of management still follow the habits of local people.
The above measures were adopted from the spring of 2009. In the past year, due to the lack of confidence of farmers, the amount of fertilizer applied was reduced by a lot compared with the demand. However, in the second half of the year, it was seen that the tree potential was significantly improved, and the output reached more than 4,000 kilograms in the fall. Rejuvenation measures continued in 2010, when the annual output of mu reached more than 7,000 kilograms. In 2011, the mu yield reached 8 thousand kilograms. From the perspective of the garden, the most obvious change in the park is the effective control of ringworm disease and rot disease. Because Juye County is not Apple's main producing area, local climatic conditions are not good, and the people's drug use levels have not been high. The park has not used lime sulfur in the past few years to take rejuvenation measures and has never played in summer. In Bordeaux mixture, few drugs have been directly targeted in the garden for a few years in the garden (which the local people could not buy), and almost every tree in the local orchard breeds roundworm disease. Before the test park rejuvenated, This is also the case. After the rejuvenation measures were taken, there was a significant change in the phase of the tree. The garden did not scratch the bark in the spring, but as the fruit trees became prosperous, the rough skin of the original ringworm disease was fully exfoliated; the original severe branch rot disease parts were healed, and some trunks were rotted. Half of the trees that have been eroded by the disease have also resumed growth and formed a unique landscape in the old orchards.
At present, from the results already obtained, it can be shown that the rejuvenation of old trees should be mainly directed at the restoration of the soil's living environment and the promotion and cultivation of fruit tree roots. At present, the rejuvenation trials in this park are still underway. This year, the author is further adjusting the fertilization, medication, and management programs to strive for further results. The production level of the old orchards could not be realized. It is a common problem in the production of fruit in various regions. Due to improper management over the years, many old fruit trees are plagued by diseases, the tree vigor is weak, and the yield is extremely low. For example, apple trees, many fruit growers all over the country believe that the growth of old trees is more than twenty years old, and the reduction in production is a normal phenomenon, and many people believe that no value has been used to destroy trees and trees. In fact, if these trees are properly managed, they are at the peak of the result. If the trees are rebuilt, they will affect the profits for many years. In order to solve the problem of rejuvenation of old fruit trees, the author started to explore the method of rejuvenation of old fruit trees in Juye County in 2009. Juye County is located in the plains of Shandong's southwestern Shandong Province and has a certain area of ​​flat apple. However, in the low-altitude plain area, the summer rainfall is unfavorable in terms of climatic conditions. It is not Apple's best suitable habitat. In addition, local people have low levels of fruit tree management, and disease in the orchards such as ring vein disease and defoliation disease are widespread. The test garden was selected in the village of Yiguantun Village, Tianzhuang Town in the county. The orchard area is about 3 acres and 120 apple trees are planted. The varieties include Fuji, short-stemmed red stars, Gala, early morning glow, and Granny Smith, etc. In 1984, most of the trees were about 25 years old. Over the years, the park has been poorly managed by its owners because of its poor management. Many old fruit trees have been rotted with only half of the tree trunks and used them as waste gardens. In order to try to convince the owner not to shave trees.
Considering that the main diseases of fruit trees are mostly caused by poor root development, the rejuvenation measures of old trees should start from the restoration of orchard soil and the growth of fruit tree roots. The main measures taken were:
First, the orchards stopped using raw fertilizers, including unfermented chickens, ducks, and pig manure.
The second is to verify and screen the effects of some microbial organic strains, and specially select high-quality strains to ferment and produce microbial organic fertilizers for use in test trees.
The third is to consider the effect of calcium on the growth of fruit tree roots. There is a certain amount of available calcium fertilizer added to each fertilizer according to the tree size.
The fourth is the spraying of microbial nutrient solution on the foliage to promote further development through tree absorption.
The fifth is to use light trim on pruning, not considering the tree shape, but first to increase the amount of branches and leaves of the fruit tree so that the old tree can generate a large number of shoots. After the old tree grows, the pruning branches are used to make flowers.
In order to observe the effects of the above measures, other aspects of management still follow the habits of local people.
The above measures were adopted from the spring of 2009. In the past year, due to the lack of confidence of farmers, the amount of fertilizer applied was reduced by a lot compared with the demand. However, in the second half of the year, it was seen that the tree potential was significantly improved, and the output reached more than 4,000 kilograms in the fall. Rejuvenation measures continued in 2010, when the annual output of mu reached more than 7,000 kilograms. In 2011, the mu yield reached 8 thousand kilograms. From the perspective of the garden, the most obvious change in the park is the effective control of ringworm disease and rot disease. Because Juye County is not Apple's main producing area, local climatic conditions are not good, and the people's drug use levels have not been high. The park has not used lime sulfur in the past few years to take rejuvenation measures and has never played in summer. In Bordeaux mixture, few drugs have been directly targeted in the garden for a few years in the garden (which the local people could not buy), and almost every tree in the local orchard breeds roundworm disease. Before the test park rejuvenated, This is also the case. After the rejuvenation measures were taken, there was a significant change in the phase of the tree. The garden did not scratch the bark in the spring, but as the fruit trees became prosperous, the rough skin of the original ringworm disease was fully exfoliated; the original severe branch rot disease parts were healed, and some trunks were rotted. Half of the trees that have been eroded by the disease have also resumed growth and formed a unique landscape in the old orchards.
At present, from the results already obtained, it can be shown that the rejuvenation of old trees should be mainly directed at the restoration of the soil's living environment and the promotion and cultivation of fruit tree roots. At present, the rejuvenation trials in this park are still underway. This year, the author is further adjusting the fertilization, medication, and management programs to strive for further results.
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