April is a very important month in the management of fruit trees, especially in the middle and late months, for apples, grapes, citrus, cherries, peaches and these fruit trees, it is the critical period of budding, flowering and fruit setting, and it is also the initial impregnation period of the year's diseases.
For apples, grapes, citrus, cherries, peaches, these fruit trees, there are differences between the south and the north, there are also differences between shed planting and open planting, and the details of the management of each fruit tree are also different.
There is a doorway for watering. In the case of ensuring the growth of fruit trees, reasonable water control and adjustment are carried out according to the rainfall conditions. Well water should not be used. The flowering period of fruit trees is in the stage of low temperature gradually rising, and the root system of fruit trees has entered a normal growth state.
Because the groundwater temperature is lower than the aboveground temperature, the root system is stimulated by the outside, which will cause the nutrient supply disorder and physiological dysfunction in the tree, which can easily cause the consequences of flower drop without pollination and flowers without fruit.
Note: Don't water blindly, don't conform to the herd. It is important to observe the state of your own fruit trees.
Fertilization should be controlled. Balanced fertilization was carried out according to last year's tree potential, basal fertilizer use, and germination fertilizer use. It should not be excessive, and what is lacking should be made up.
Overfertilization is common in many orchards, resulting in an imbalance of soil nutrients. In particular, orchards that have been using a large amount of chicken manure for many years can easily lead to excessive enrichment of phosphorus in the soil, antagonize the absorption of trace elements such as iron, zinc and manganese, and cause fruit trees and fruits to have symptoms of nutrient deficiency, affecting the growth of trees and fruit quality. Therefore, it is necessary to apply fertilizer in a balanced manner according to the law of fertilizer requirement of fruit trees.
Note: Balanced fertilization ≠ balanced fertilization. Organic fertilizer must be fermented before use, unfermented organic fertilizer will hurt the roots, burn the roots.
Disease prevention is key. The flowering period is the initial impregnation period of the disease throughout the year, the rise of temperature, budding and leaf development,
In addition to paying attention to strengthening the protection and treatment of spraying before and after the rain, we should also be clear about what pests and diseases have occurred in the past, remember what drugs have been used before, and try to rotate and alternate the next time. We should always pay attention to the recent weather forecast and the actual situation of the orchard to determine the timing of spraying, and would rather not dare to postpone day two days in advance, once the opportunity to spray is missed, future pests and diseases will not be preventable.
Note: Prevention is the key, and if you do a good job of disease prevention during the flowering period, you can reduce the disease by at least 80% throughout the year.
Frost had to be guarded against. Last year's frost caused most of the northern fruit trees to suffer varying degrees of damage. Therefore, it is very important to prevent frosts.
Note: In the event of late frost and heavy frost, effective measures should be taken to save it in time, and every effort should be made to protect the remaining fruits on the tree, so that they can grow and grow well, reach the standard of high-quality fruits, and strive to sell at a good price, so as to minimize the losses caused by frost.