As the saying goes, "Spring is the year when you see it," you can see the importance of spring management. Let's talk about a few points in the spring management of walnut trees. Fertilizer management: Regardless of whether the result tree or the young tree should be thawed in the soil, the tree germinate before pouring a germinating water to supplement the loss of water in winter to promote new shoot growth, flower bud differentiation; watering can also reduce the temperature delayed flowering time, to avoid night cream harm. In the spring, fertilization is mainly based on topdressing available nitrogen (urea). The result is that the tree's fertilization amount is based on the yield, and the standard for producing 100 pounds of urea per pound of dried walnuts is used. The fertilizing amount accounts for half of the whole year, and the method of use can be used. The use of acupuncture, furrow, etc., but must be buried in the soil, after about 5 to 7 days after use and then watering to increase the utilization of urea; young tree fertilization amount to the trunk diameter of 50 g / cm as the standard, pay attention to fertilization position should be 40 cm away from the trunk is better to prevent root burning. If you did not use organic fertilizer last year, you should hurry up and use it, and you must water it after use. Pest Control: 1. Clean up the litter, weeds, etc., in the park, and burn them in a concentrated manner or add fertilizer. 2. In late March, the whole park sprays 3 to 5 Baume degrees of lime sulfur; or spraying can kill 3000 fungicides. 3. To strengthen the prevention of rot and ulcer disease. If you find that there are dangerous symptoms, you can use a knife in the lesion along the direction of the trunk draw deep to the xylem wound, pay attention to knife-edge interval of 1 cm, and then smear lime sulfur or carbendazim and other fungicides. Plastic trim: The plastic pruning of walnut trees should be comprehensively considered based on factors such as variety, age, site cultivation conditions, climatic conditions, technical level, and economic basis. In general, the results of early-maturing varieties are early and easy to produce, but after a large number of results, the management of fertilizer and water cannot keep up with premature aging, resulting in “small old trees.†Therefore, the pruning of early-maturing varieties is mainly in the sapling stage, and the cultivation of tree-shape is the main prevention measure. Premature results of the formation of old trees, at the same time open the perspective of the appropriate length of the branches of the branches to promote its growth, so that as soon as possible to form; for the early fruit of walnuts should be moderately short and retracted to maintain The growth potential of branches and fruiting branches prolongs their life expectancy. The mid-to-late real cultivars, such as fragrant scent, have a prosperous growing trend in the sapling stage, and the results of the terminal buds are dominant. Therefore, in the sapling period, the angles of long and open angles should be lightly cut to increase the proportion of short and mid-stems, and promote their multi-flowering early. The result shows that the pruning of the middle and late real varieties entering the full fruit period is mainly to pay attention to the opening angle, to eliminate the dense auxiliary feeding branches, and to improve the ventilation and light transmission conditions of the trees. For the continuous results, the result branches should be moderately retracted for many years. Maintain its strong growth potential. We are the one of three leading factory in China, specialized in manufacturing laser distance module since 2004. Bilateral laser distance measurer is one of mutifunctional laser distance device. JRT multifunctional laser measuring device functions include area,distance,length,volume,continuous measurement,addition and subtraction, measuring unit: ft/m/inch. More functions can be customerized. And the laser measuring meter have distance 30/40/60/80/100/150m for chosing. This bilateral degin is our 40m middle laser distance transducer 703A laser measuring meter. Laser Range Finder Measurer，80M Laser Distance Meter，Distance Meter 80M，Laser Distance Meters Chengdu JRT Meter Technology Co., Ltd , https://www.jrt-measure.com
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