1 Hibiscus high-efficiency cultivation technology measures 1.1 Land preparation techniques in cultivation of barley In the whole process of cultivation of barley, soil preparation is a relatively important part. After the previous harvest is completed, the grass carp in the sowing field should be ploughed away in time. In spring sowing, shallow ploughing is needed to level the ground, which can help the young seedlings to emerge successfully. The autumn seeding needs to be carried out about half a month after the autumn harvest. The weeds in the arable land will be ploughed, and the sick plants will be cleared in time. The autumn sowing needs to be taken. Deep plowing, the depth should be more than 20cm. In the process of soil preparation, weeds and pests can be effectively eliminated, and they can also play a role in preventing cold, make the soil enhance its own acceptance of rainwater, maintain soil fertility, and at the same time reduce the impact of spring drought to a certain extent, and promote the Grow. After the completion of the autumn ploughing work, honing and conservation are needed to avoid the emergence of wild oats. Before sowing, shallow ploughing mode should be adopted, combined with fertilization management work. Usually the amount of base fertilizer is 1000kg/700m2, and the intensive cultivation mode is adopted to ensure that the soil is finely crushed and there is no weed residue. In addition, it should be based on the specific circumstances of the cultivation of barley, generally speaking, the direction of the slope should generally be vertical, mainly to maintain water and fertilizer. Before turning to the ground, it is necessary to thin the fertilizer and spread it. If it is underground pests and exceeds the pest control index, it is necessary to use 3500g/600m2 of worms to mix the fine soil for spreading, and the shallow ploughing work is also required. It is usually necessary to apply the fertilizer at a distance of about 20 cm to minimize the evaporation of soil moisture. 1.2 Seeding Techniques in the Cultivation of Highland Barley When sowing, the varieties with good traits should be selected, and the range of use of the varieties should be relatively wide, and they can adapt to areas where the climate is relatively poor. At the same time, it is necessary to carry out the sun-sowing, and by adding sun-seeds and seed coating agents, the raising rate of barley can be increased, and the pests and diseases occurring during the seedling stage can be controlled. In high mountain areas, sowing is generally conducted from mid-April till late. Semi-alpine areas can be selected for sowing from mid-March to late. The depth of sow planting is usually about 5 cm. 2 Field Management Techniques in the Cultivation of Highland Barley 2.1 Fertilization Technology Under normal circumstances, fertilization for barley fertilization requires the implementation of mixed fertilization techniques based on lower specific conditions. Before sowing, 7-8 kg of nitrogen, phosphate fertilizer and potash or ammonium compound fertilizer can be used, and it can be evenly mixed with 1000 kg of organic fertilizer, and then it can be sealed for about 7 days, or it can be applied separately, and it should be applied on the day of fertilization. It is buried to ensure that organic fertilizer can effectively penetrate the soil. Under normal circumstances, a continuous cropping area and a secondary cropping area need to be fertilized in an amount of 500 kg/500 m2, and about 8 kg of urea should be used as a base fertilizer. Other fertilizers can be used as top dressings. The main top-dressing fertilizer is nitrogen fertilizer, and its amount needs to be determined according to the specific conditions of the growth of young seedlings. After the heading of the young plant, no nitrogen fertilizer is applied at every stage of growth to avoid the occurrence of late maturity. In the late growth stage of the barley, its roots will slowly age and the absorptive capacity will decline, leading to premature aging of the barley leaf function. During the process of spraying on the bark, it is necessary to effectively compensate for the nutrient of the plants, thereby promoting the growth of the roots. The function of the leaves is extended to ensure that the production and transportation of nutrients can be successfully completed, while at the same time promoting the fullness of the grains of the barley. Therefore, from the heading stage to the grain filling stage of the young plants, 200kg/600m 2 of potassium dihydrogen phosphate can be used, and about 55kg of water can be added to stir the mixture. If there are signs of yellowing in the indigo, then about 1kg of urea should be added for spraying. The occurrence of stripe rust barley, which need to add 10% to 15% of triadimefon spray, this can increase the effect of barley grain weight, but also can effectively control the emergence and spread of stripe rust. 2.2 Comprehensive management of diseases and insect pests Underground pests and above-ground pests are the major pests and diseases affecting the quality of barley. Among them, small ground tigers and aphids are the most harmful underground pests. Aphids can cause yellow dwarf disease in the indigo. Aphid generally occurs from the jointing stage to the grain filling stage, so it is usually necessary to choose to spray insecticides during the tillering stage. The armyworm usually appears in the heading and maturation stages of the indica. If it appears to be a pest, it will cause serious damage to the growth of the indica. The insects will eat the leaves of the indigo, the grains and the neck of the indigo, and may also cause the indigo The first half of the whole section is foraging and for the treatment of such diseases and insect pests, stomach poison pesticides or contact pesticides can be used to prevent and control the 2nd instar larvae to the utmost extent. 2.3 Bareness prevention techniques One of the main reasons for the low yield of barley is also related to lodging, and the relatively low resistance of barley varieties to lodging is a key factor in the lodging of barley. In addition, the excessive planting density of barley also causes the barnyard to appear lodging. In the process of planting, too much fertilization and insufficient irrigation may cause barley lodging. Therefore, in order to do a good job in the prevention of barren lodging, we should select good barley varieties, reasonably plan planting density, and do a reasonable and correct fertilization irrigation work to effectively improve the yield and quality of barley. 3 Barley harvest work After the barley has matured, it should be harvested in time. Whether it is too early or too late to harvest barley, it will affect the quality and yield of barley. Under normal circumstances, the harvesting of the barley should be carried out at the end of the waxy yellow period. When the main planting area has more than 90% of the barley stems with yellow leaves, it is the best harvest time for the barley and can also be improved during this period. Barley's quality of preservation. Highland bark harvesting is the final stage of the cultivation and cultivation of barley, and it is also the last step to do a good job in barley production. 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