First, soil management Deep turning. Deep turning can speed up the maturation of the soil and facilitate the development of the root system to deeper layers. Deep plowing can be carried out in different years. It should be started 2-3 years after the rose is planted. The time should be combined with fertilization before the fall of leaves in autumn, after thawing in spring, before budding or after flowering. It mainly adopts the method of digging and deep digging, and it is undone from the outer edge of the rose bushes. The depth of the ditch is 40-50 cm and the width is 50-60 cm. When deep-turning, attention must be paid to the opening of the original planting ditch, and no partition is left. Less damage to plant roots. 2. Root soil. 80% of the roots of roses are horizontal roots. It is very important to cultivate the base of rose after deciduous rose or in early spring. The thickness of cultivated earth is generally 4-8 cm, which will not only thicken the soil layer of the flower, but also promote the growth of the root system. After the grass is rotted in the soil, soil humus is added and the diseased leaves are buried in the soil, which also reduces the spread of germs. 3. The ploughed planer. The cultivator should be carried out during the growth period of the rose to improve soil permeability, reduce water evaporation, increase soil temperature, and promote microbial activity. Shallow planing should be carried out before winter to reduce the risk of pests and diseases in the following year. The rain and snow will accumulate and the soil will be weathered. The depth of shallow planing is generally 10-15 cm. 4. Clear weeds. Rose is a strong negative plant. In order to ensure the normal growth of rose, soil management should be used to completely remove perennial perennial weeds and creeping climbing plants in flowers. Second, fertilizer and water management Early spring, when the temperature is stable at 3-5 °C, rose buds begin to sprout, should be nitrogen-based, nitrogen, phosphorus combined with available fertilizers, such as urea, diammonium phosphate, etc., per 1/15 hectare ( 1 acre) dosage of 10-15 kg. The period from the middle of April to the end of May is the period when the rose blooms. During this period, appropriate amount of quick-effect compound fertilizer should be applied, which is 15-20 kg per 1/15 hectare. Note that if the soil is dry during each fertilization, water should be poured once after fertilization, and water should not be taken during the flowering period to avoid affecting the collection of flowers. In order to speed up fertilizer efficiency, extra-root fertilization can also be carried out in early April after the rose leaves are grown. Dilute urea or diammonium phosphate to a fertilizer solution with a concentration of 0.3% to 0.5%. Apply directly to the leaves on a windless morning or early evening. surface. From mid-August to mid-October, the branches and leaves gradually stop growing, and the accumulated nutrients in photosynthesis return to the root system. In this period, organic fertilizer should be applied mainly, and the available nitrogen fertilizer can no longer be applied, and the soil moisture can be properly controlled to prevent prolonged growth. When the basal fertilizer is applied, it can be combined with deep turning at the same time. The dosage is 2500-5000 kg per 1/15 hectares, and then a winter irrigation is performed. Third, trim and update 1, trim. (1) Winter and spring pruning: After rose leaves fall to germination, pruning is mainly done with sparse cutting. Each branch chooses to leave thick and thick branches 15-20 branches. Large space can be cut short enough to promote branching. For the weak growth, old branches and more rose bushes should be properly cut. (2) Pruning after flowering: It is mainly used for the growth of strong, dense shoots. After the flowers are harvested, the dense branches, cross branches, and overlapping branches are to be removed. 2, update. One update method: Before and after the frost, cut all the branches of the roses 5-6 cm above the ground. Then use a fine soil to make the heads of the remaining branches of the cut roses. In the following spring, the roots of the roses grow. Many new twigs are waiting, and after the new shoots stop growing, the dense and thin branches are cut off and the branches left are distributed evenly. Yearly update method: According to the growth of rose bushes, cut off some dead branches, slender branches, old branches, and pests and branches each year. This will cause the flowers to grow new shoots every year, keep the flowers growing strong, and not reduce production, but also achieve year-by-year growth. The purpose of updating rejuvenation. IV. Prevention and control of pests and diseases 1. Disease. The main diseases that damage roses are rust, brown spot, and powdery mildew. Prevention and treatment of rust can be removed from the buds. In the rust, brown spot, powdery mildew, and the onset of powdery mildew, spraying triadimefon or chlorhexidine or chlorothalonil solution every 15 days. 2. Insect pests. The main insect pests that damage roses include scarabs, big moths, red spiders, aphids, scale insects, and long-lived cattle. Chafer and big moth mainly harm the young shoots and leaves of roses. During the occurrence period, it can be sprayed with dichlorvos or phoxim or the enemy liquid to prevent and control. The spider mites, aphids, and scale insects mainly absorb rose sap, resulting in debilitating growth. They can be sprayed with dimethoate or monocrotophos and other insecticides. China Agricultural Network Editor
classification The editor A drill can be divided into three categories: hand electric drill, Impact Drill, hammer drill. Minimum 1 hand Electric Drill: power, use scope is limited to wood drilling and when an electric screwdriver, part of the hand electric drill can according to the purposes to specialized tools, use and model more 2. The impact drill, impact drill impact mechanism have fangs and ball type two kinds Hand electric drill Hand electric drill . Ball type impact electric drill by the moving plate, plate, steel ball, etc. Dynamic plate through threads are connected to the spindle, with 12 steel ball; Fixing use pin fixed on the chassis, with 4 ball, under the influence of thrust, 12 steel ball along the four steel ball rolling, the carbide drill rotating impact movement, can on the brittle materials such as brick, block, concrete drilling. Release pin, make the fixing servo plate rotation, no impact, to make a general electric drill. 3. The hammer drill, electric hammer: can drill holes on any of the material, the most widely use scope. The three electric drill price from low to high alignment, function has said
electric drill, hand drill, portable drill, electric hand drill
ZHE JIANG ULITE TOOLS MANUFACTURE CO.,LTD , http://www.ulitepowertool.com