Second, remove the cold cover. Some perennial evergreen medicinal plants such as gardenia, Amomum villosum, bergamot, orange husk etc., when the soil temperature is 1-2°C, the root system begins to grow. In production, when the general temperature is stable at around 5°C, it is necessary to remove the overwintering weatherproof coverings in time, and pick up the floor and other debris. The seedlings and herbs of the medicinal materials cultivated by the thin film shall be used after the removal of the film to prevent the early spring from freezing. Third, promptly pruning Lizhi Qingyuan. Woody herbs include wood, fruits, flowers and other herbs, most of which are perennial trees. For these herbs, we must seize the opportunity to prune the buds in the early spring, cut off the remaining branches, clean up the branches and make the plants. The whole should be light, ventilation, and topdressing farmyard manure and organic manure. At the same time, according to which part of the plant, it is necessary to supplement trace element fertilizer. In this way, the plants can make full use of space, light and fertility, grow well, increase the flowering and fruit setting rate of the plants, and achieve the purpose of increasing production and income. Fourth, weeding, earth training. After the early spring Qimiao, weeds should be diligently used to ensure the cleanliness of the drug field, timely cultivating loose soil and raising the temperature. The cultivator should not be deep enough, so as to prevent the soil blocks from sinking. However, roots, roots, and roots of medicinal plants such as Panax notoginseng are distributed on the surface of the soil. Because the planting density is relatively large and the roots are staggered, it is not appropriate to use tools for cultivating, so as not to damage the root system of Panax pseudoginseng. Weeds must be removed manually and the number of weeding will depend on the condition of weeds. When weeds are found on the surface of weeds when weeding, the soil should be cultivated in time and the soil surface should be properly suppressed to ensure the normal growth of the plants. In recent years, using chemical herbicides has saved labor and money. Before planting, application of 50% paracetamol 150 g or 25% diuron 200-300 g/10% difenophenone 1250 g per acre has significant herbicidal effect on 1-2 year old weeds. All these herbicides can only prevent the weeding of non-rooted weeds and therefore need to be combined with manual weed control. Fifth, remove flower buds. The medicinal plants like Rhizoma Coptidis, Radix Salviae Miltiorrhizae, Panax Notoginseng, Radix Ginseng and other roots and rootstocks need to consume a lot of nutrients and reduce the rhizome production of medicinal plants. Removing the flowers can control the growth of nutrients, reduce nutrient consumption, promote fibrous root growth and leaf growth, and increase the accumulation of rhizome material, thereby increasing the yield of rhizomes. Extracting buds is beneficial to the regulation and control of high quality and high yield of medicinal materials. In addition to the plan to retain the species, since the second year should be removed immediately after the calyx withdrawal. Since the flowering period is inconsistent, they should be removed in batches in order to promote the conversion of nutrients to underground tubers and increase yield. In addition, with regard to chemical removal, it has been reported that the use of ethylene, for example, can increase production by 4.5% at the flowering stage of Campanulaceae. 6, prevent fruit drop. Some medicinal fruits such as Amomum villosum and Ziziphus jujuba will cause fruit-dropping phenomenon after pollination, especially when the young fruit formed at the flowering stage and the final flowering stage is about 50% shedding. It is necessary to prevent fruit drop in time in order to increase the yield. The main measures to prevent fruit drop are: do a good job in cultivation and management, and cultivate strong seedlings. After flowering, when the young fruit is formed in large quantities, the top dressing will be applied. The use of 3% superphosphate, 0.1% ammonium sulfate in the production of spraying the leaching solution, the effect is better, can improve the fruit setting rate of 15-30%, if the first flowering period before spraying potassium dihydrogen phosphate, blooming after spraying period Superphosphate, ammonium sulfate leaching solution, the better. Outside the root dressing is suitable for cloudy or evening, evenly sprayed on the foliage. Spraying 5-20 mg/kg 2,4-D can increase the fruit setting rate by about 40%. During the spraying period, most fruits have a 0.55-0.7 cm diameter. When necessary, spraying again every 7-10 days, spraying time in the afternoon or cloudy day, spraying the amount of wet fruit for the degree, when sprayed with extra-root fertilizer. Urit Medical,Medical Analyzer,Medical Test Paper,Laboratory Analyzer Changchun Medicon Technology Development Co., Ltd , https://www.teststrip.pl
Early spring management of herbs
First, to promote green germination. Due to its fast harvesting characteristics and ability to see benefits in a short period of time, medicinal herbs are more liked by farmers and their cultivation is quite extensive. These medicinal herbs are generally planted in summer, autumn and winter in the previous year. In the early spring of the year, it begins to grow green and is harvested in summer or autumn. Although these herbs are relatively hardy, their aerial parts tend to be frozen and dying in the winter. After the beginning of spring, as the temperature and the ground temperature continue to rise, medicinal herbs begin to sprout again. This favorable time should be used for irrigation topdressing to help the plants return to green as soon as possible. The early death of dead will ensure a good harvest.