Midsummer Apple Tree Management Five Points

August is the flower bud differentiation period and fruit rapid expansion period of apple trees. It is also the peak period of pest development. The management of trees in this period is very important. The main points of management are summer cutting, pest control, top dressing, weeding and rowing.

Xia Jian: First, the strong Wang sticks, leggy branches, take a branch so that the branches opened, the growth potential ease; the second is to eliminate part of the shading of Wang Wang; third is the short spring tip middle, spring and autumn tip blind spot or autumn shoots In the central part, it promotes the development of autumn shoots and forms flower buds, and it becomes a good result. The fourth is the fruit trees with too many results and the relocation of the resulting parts. Hanging branches and top branches are used to prevent folding and avoid stacking together. It is conducive to the growth and development of fruits and coloring; the fifth is to pick up the heart and promote its branching and short branches to form flower buds.

Prevention and control of pests: In the event of a “drought-out drought” spider mite, it is easy to have an outbreak and damage, and can spray 1.8% avermectin water emulsion 3000 to 4000 times + soft water through 4,000 times mixture to prevent and control once; Orchard, sparsely populated shoots, can be sprayed 48% chlorpyrifos (mushing, An Minle, good labor) EC 1000 ~ 1500 times +25% imidacloprid suspension 2000 ~ 3000 times + soft water through 4,000 times the mixture control; leaf roller moth, potential In the early stage of leaf moth, it is possible to spray 25% diflubenzuron suspension 1000-1500 times, or 40% triflumuron suspension agent 6000-8000 times; Peach fruit borer When the egg rate reaches 0.5%-0.8%, the tree It should be sprayed, and the commonly used agents include 20% chloramphenicol 2000 times, 5% Kungfu EC 2500 times (altering harmful fleas), etc. The spraying will focus on the fruit surface; continue to kill the leaf roller moths, boat caterpillars, and cockroaches.蝉, Sang Tian Niu, Xing Tian Niu work; rainy season, depending on the circumstances spray 70% thiophanate-methyl (Latest, thiophanate-methyl) WP 800 to 1000 times, or 25% of propiconazole (Jinshishi, the enemy off) EC 2000 ~ 3000 times, or times the amount of Bordeaux mixture 1 ~ 2 times. Control of brown spot, spotted deciduous disease, ringworm disease, anthrax, round spot root rot; also can be set black light trap lamp, yellow trap board, Lepidoptera pest entice, trapping and killing pests.

Topdressing: Top dressing of fruits with enlarged fertilizer is conducive to promoting new roots, improving leaf function, increasing single fruit weight, increasing grade fruit rate and yield, enriching flower buds and tree nutrient accumulation, and improving tree resistance, yielding good quality for the year and the coming year Good harvest laid the foundation. Generally, about 50 kilograms of quick-effective compound fertilizer (high-nitrogen and high-potassium compound fertilizer) is applied per acre, which is favorable for promoting fruit enlargement, and topdressing phosphorus and potassium fertilizers can improve fruit hardness and sugar content and promote fruit coloring.

Weeding: In August, weeds thrive and compete with fruit trees for water, affecting the air and light of fruit trees, and breeding pests. The lush green grass outside the park, on the sides of the ditch, on the side of the park, on the roadside can be cut off and pressed under the tree plate. Orchards that plan to implement artificial grass can be planted in the rainy season. An orchard with artificial grass or natural grass has been implemented. When the grass height grows to 20-30 cm, it should be cut off in time. Promote the use of grassy materials such as crop stalks or weeds to cover orchards to reduce the breeding of diseases and insects, and to cool and moisten the soil.

Expulsion: In August, when the rainy season coincides with a large amount of precipitation, we must do a good job in flood control, water and soil conservation, and wind protection. Poor soil moisture and poor ventilation during the rainy season will inhibit the growth and absorption of the roots. Orchard land can be used for "ridging cultivation" management techniques, that is, to take 10 cm of topsoil from the rows to the inside of the row, so that the distance between the rows and the ground is 20 cm. About the height difference between the left and right, increase the soil layer under the canopy, which can not only store water and water, but also prevent waterlogging, promote the absorption of nutrients, and prevent the accumulation of water to induce root diseases. For the affected plants, the roots and necks were soaked in the soil and the root system was restored as soon as possible.

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