Four key points in the management of apple orchard in the rainy season

Drainage and watering:

July to September is a month with more rain. When the soil moisture is saturated, it is necessary to dig trenches and drains in time to prevent the roots from dying and causing defoliation or dead trees. According to the investigation, there are defoliation in the garden and water accumulation in the soil. There is a great relationship. At the same time, too much soil water also loses a lot of soil effective nutrients, which directly affects tree growth and fruit enlargement. Watering should also be carried out in the event of drought, because the high temperature in summer and the large amount of evaporation of branches and leaves will cause drought. When the relative water content of the soil is less than 80%, water should be poured once, but the amount of water should not be too much.

Spraying leaves:

In the rainy season, the carbendazim should be sprayed once, and the anti-mycin should be added to prevent the leaf virus and the field.

Red dot black spot bacteria through the bag

Closing the door and the bottom of the bag

After entering the fruit, spray the Bordeaux mixture 1:2.5-3:200 after 7 days, and then spray the Bordeaux mixture for protection after 20 days. Increase the amount of lime to resist the rain, extend the validity of Bordeaux solution, and prevent the early stage. Fallen leaves. At the same time, the cockroaches outbreaks are sprayed with avermectin or acetophenone and sputum, and eggs, nymphs and mites are killed. It is necessary to apply medicine to the front and back of the leaf, the periphery of the inner iliac crest, and the upper and lower sides.

Seeking light:

According to the survey, 70% of the fruit farmers pay insufficient attention to the summer shears. As a result, the large trees are poorly ventilated and light-transparent, coupled with high temperature and strong respiration. The nutrient accumulation of the inner and lower skirt leaves is less than the consumption, and the leaves are yellow and fallen, accounting for more than 25%. The leaves of the inner squat skirt without deciduous are small and thin, with less accumulated nutrients, less flower buds, and smaller fruit. Therefore, it is necessary to see the light, first remove the excessive new shoots on the back, leave a small new shoot around 30 cm, to prevent the spawning after the sparse, and secondly, the new shoots above the two branches, three It is a new tip that is both side and layer between the light and the light. The big branches that have no fruit and no space for many years should also be removed. The new shoots of the fruit should not be gone, because the nutrients are close to the supply, and the new shoots of the fruit peeling table affect the fruit expansion. After the thinning, the flower shadow coefficient of the tree should reach 25% or more. For the over-expanded tree, a PBO can be sprayed to control the growth of new shoots, promote flower bud formation and fruit enlargement, and also alleviate the contradiction between new shoots and fruit.

Bag picking and fertilization:

Early and mid-maturing varieties should go to the bag in time to promote coloring. It is best to disintegrate the bag for anti-Japanese sun, and match the leaves to change the fruit to increase the quality of fruit. For the late-maturing Fuji, etc., the fruit-expanding fertilizer should not be pursued at the latest in late August in late August.

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