About author:Wang Nong, Senior Agronomist, Xianyang Science and Technology Commissioner, Technical Director of Modern Fruit Industry Park, Vice Chairman of Liquan Fruit Farmers Association. He has published a number of technical articles on major platforms, participated in the compilation and publication of a number of fruit tree monographs, and carried out a number of innovations in fruit tree management technology.
Entering April, the orchard reached a critical period of spring management, and some fruit areas were affected by the impact of the early spring cold. April is a critical period for fruit trees to protect flowers and fruits, and scientific management is very necessary! So how to blossom and promote fruit? Based on the summary of years of experience, I have summarized the following points, hoping to help the majority of fruit growers in their actual work management:
Last winter and this spring, it lasted too dry, and somehow, there were fewer insects! With less pollen, the fruit set rate is affected. With my many years of experience, in different directions in the orchard field, the ground is surrounded by soil around a square earthen city, with waste plastic bags on the ground, the soil is pressed around the water, made into a simple reservoir, each piece of land to make 2 to 3, attract more bees, so that the bees have food and drink, all day long in the orchard.
In the absence of pollinator trees, unreasonable allocation of pollinator trees or lack of sufficient pollinator bee sources, and abnormal temperature during flowering, artificial pollination must be considered.
1. "Family planning": survival of the fittest (strong branches, large number of leaves, large)
2. Promote short and medium hair: eliminate "one flower for flower", and break the autumn shoot section of the growth point.
3, timely safety spraying: Recently, the spring days are dry and dry, and it continues to be too dry.
Various active insect bodies can be seen in the field, strengthening field management and timely arrangement of medication. When taking drugs, we must pay attention to the medication according to the high limit multiple, liquid fungicide, good fertilizer, insecticide.
Peach and other stone fruits apple leaf curl moth, aphid, peach leafhopper, etc., pear pear wood lice, leaf mite and so on killed. All-you-can-eat green blind bugs cannot be ignored! It is extremely important to reduce the overwintering base of diseases and insect pests and reduce the pressure of the overwintering generation to control the rampant hazards in the later part of the year.
The main diseases in April are rot, powdery mildew and rust; the main pests are red spiders, apple aphids, leaf curl moths, leaf diver moths, scarab beetles, etc. Apple orchard medication needs to pay attention to: flower dew red ~ inflorescence separation period of the garden medicine, to ensure the safety of flowers (disease / irritation and other injuries) the first priority, we must remember: rather light than heavy.
Insecticides avoid emulsion preparations, high-line multiple sprays, or do not add, to avoid harm to orchard insects, especially bees; fungicides to choose liquid safety while preventing powdery mildew, moldy heart disease, etc.; supplemental regulation with euol 500-800 times.
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