In April, it is the flowering period of deciduous fruit trees such as pears, peaches, and plums, and it is also a very important period in the management of the orchard's annual cycle. Recently, the countrywide precipitation has been more and the temperature has dropped significantly. In particular, Shaanxi, a major province of the fruit industry, has recently experienced cooling and rainy weather, which has caused no significant impact on the production of the fruit industry. To this end, on April 2, the reporter interviewed a member of the newspaper's expert advisory panel and Professor Ma Zhifeng of the Yangling Vocational and Technical College. He said that continuous rain and cooling are not conducive to fruit tree growth and flowering. Farmers need to take advantage of the timing of fine weather. Effective measures to prevent and control, reduce losses and ensure revenue.
Fruit tree blossom pollination whole garden spray is the key
Ma Zhifeng stated that it is now a critical period for the flowering and pollination of fruit trees such as pears and peaches. The recent rains, long periods of rainfall, and heavy rains will inevitably affect the flowering and pollination of fruit trees, which will in turn lead to reduced orchards production and damage to the interests of farmers. . In the near future, farmers should seize the rainy season and do a good job of fruit pollination. Honey can be diluted to form honey water, the whole garden spray, attracting bees to pollinate, improve fruit set rate.
Orchard water should be drained in time
In recent days, rainwater is often found in orchards with unfavorable drainage, which can cause water accumulation. Especially for peaches, apricots, cherries, kiwifruit, and other fruit trees that cannot be soaked in rainwater, they should be drained in time to avoid root growth problems caused by long-term accumulation of fruit trees. rot. At the same time, the dead branches, fallen leaves, fruit drop, etc. of the orchard should be promptly removed to prevent the spread of diseases and increase losses. Damage to the roots of the fruit trees will weaken the absorption function. It should be noted that after the orchard removes the accumulated water, it should not be directly fertilized. Spray the foliar fertilizer with the disease-preventing agent. Do not apply fertilizer for 7 to 10 days afterwards. In severely damaged fruit trees, organic fertilizers and P and K fertilizers are applied one month later. Because of the long-term accumulation of water in the root soil, there will be a phenomenon of compaction. After the accumulation of water is eliminated, when the soil is dry, it is necessary to carry out timely cultivating and soil weeding and weeding to carry out “drying†in order to improve the permeability of the soil and prevent fruit root suffocation. Causes the death of the fruit tree.
Diseases of fruit trees increased to adopt chemical control
Ma Zhifeng introduced that too much rain, orchard humidity, especially greenhouse fruit trees, easily lead to the occurrence of fruit tree disease. "When the disease is light, use a protective bactericide to prevent it, and when the disease is heavy, use a systemic bactericide to prevent and cure. According to recent climate conditions, it may lead to leaf deficiencies in peach trees and black spot diseases in pear trees. , should be based on the severity of the disease to take different agents to prevent and control."
Ma Zhifeng said that the protective bactericide can form a breathable, water-permeable, light-permeable compact protective film on the surface of crops, inhibit germination and invasion of pathogenic spores, and achieve bactericidal and disease-preventive effects. Wide bactericidal spectrum, and strong governance, not easy to produce resistance to bacteria, such as lime sulfur, Bordeaux mixture. Inhalation therapeutic bactericide refers to the bactericide that can be infiltrated into the crop or absorbed by the crop and transmitted in the body after the bacteria invade the crop or after the onset of the crop, directly affect the bacteria or affect the metabolism of the plants, kill or inhibit the bacteria Pathogenic process, remove disease or reduce disease. This type of bactericide is called a therapeutic therapeutic fungicide. Strong bactericidal specialty, good treatment effect, easy to produce resistance to pathogenic bacteria, such as carbendazim, thiophanate methyl and other.
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