Summer is the expansion of young lemon fruit, summer shoots and physiological fruit drop period. It is an important part of fruit tree management in the year. Whether summer management measures are in place not only has a great impact on the yield and quality of the year, but also on the growth and development of fruit trees. Bring influence and influence the output of the next year. Therefore, lemon summer management techniques mainly include the following aspects:
I. Soil, fertilizer and water management
1, water management. In the months of June and July, the drought occurred in summer and the water was discharged in time.
2, Shi strong fruit fertilizer. According to the weather conditions, determine the fertilization time, determine the increase and decrease of the amount of fertilizer according to the soil mass and the tree vigor.
In the period from late June to July 20, 2 kg of special fertilizer for lemon and 80 to 100 kg of livestock and manure water will be produced within 25 kg of the current year's strain. If the yield is increased by 10 kg, 0.5 kg of special fertilizer will be added.
Second, control the tip and promote the application of flowers to promote flower control technology to promote the use of flowers, ring cut smear Huawang No. 2, resulting in fruit tree growth function to reproductive function transformation, control tip, and promote flower.
Third, the summer pruning of adult tree: First, timely removal of summer shoots, to avoid shoots and fruit competing nutrition, reduce secondary physiological fruit drop; Second, cut weak branches, pests and branches, dense branches, leggy branches to ensure that the inside of the tree Ventilation and light transmission; Some old and weak trees with few fruiting trees are moderately recut before the summer solstice and the management of fertilizer and water is moderated; the saplings are picked up and the crowns are enlarged and fixed. Timely use of wound-resistance and anti-corrosion film to close wounds, disinfect and sterilize, prevent bacteria and viruses from invading into the tree body and induce fruit trees to rot and other diseases.
Fourth, to protect the fruit and fruit measures in the lemon flowering, young fruit period, fruit expansion period of each fruit spray Zhuang Ti Ling, increase the amount of nutrient delivery catheter, increase fruit enlargement vitality, self-regulation nutritional matching, flower protection, Fruit, strong fruit, anti fruit drop.
V. Pest Control In the summer, the major pests and diseases occurring in lemons include red-yellow spiders, arrowhead warts, rust ticks, anthrax, and scab.
1, red and yellow spiders 24% of the endangered EC 4000-6000 times (only once a year) or 20% broom net EC 2000-3000 times.
2, lemon arrow tip 蚧 3% year-feng EC 1500-2000 times liquid or 0.5% fruit sacred cream 800-1000 times liquid.
3, lemon rust niches 10% benzoin suspension 1500-2000 times or 20% broom net emulsion 2000-3000 times.
4, lemon anthracnose, scab disease 10% of the world's high water dispersible granules 3000 times or 18% protection of EC cream 800-1000 times liquid (therapeutic agent).
When the use of chemical control must be added to the appropriate amount of new high fat film to improve efficacy.
Six, fruit bagging technology transformation with new high-fat film spraying melon surface, similar to put on a fruit bag. Overcoming many defects such as high pesticide residue, reduced quality, etc., to achieve the goal of saving pesticides, fertilizers, improving grades, increasing production, and producing pollution-free fruits.
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