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Analysis of Key Technical Points for Soybean Sowing
1. What key techniques should be mastered for soybean sowing? 1. Land selection. Soybean plots should not be planted continuously, otherwise pests and diseases are likely to occur. After the land is selected, it should be harrowed until the topsoil is loose and the surface is level. 2. Seed selection. Varieties suitable for planting in Tiandong include: Beijing bean, Yishan Liula, Guidou No. 1, Aijiao bean, Binyang Xiaoqing bean, local yellow soybean, etc. Each area can choose according to local conditions. Before sowing, select seeds of uniform size that are large and plump, and sun-dry the seeds. 3. Sowing. Early yellow soybean is sown from late February to mid-March
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Key Technical Points and Precautions for Soybean Sowing
1. Soil preparation: (1) Pre-sowing land preparation: Pre-sowing land preparation includes the soil tillage carried out before sowing as well as harrowing, leveling, and rolling. Because different land preparation techniques are used, the pre-sowing land preparation work also differs. Examples include flat plowing, ridge planting, stubble harrowing, and deep loosening. (2) Pre-sowing irrigation: For plots with poor soil moisture, where irrigation conditions permit, water once 1-2 days before sowing, just enough to moisten the soil, to facilitate seed germination after sowing. (3) Pre-sowing pre-emergence herbicide application: In some large farms in the main soybean-producing areas of Northeast China, soybean cultivation
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Technical key points for restoring tea production after snow disaster and freezing damage to tea plants
This year, some tea regions across the country experienced severe weather such as heavy snow and low-temperature freezing that had not occurred in decades, causing tea branches to break, leaves to discolor and dry up, and branches to die, resulting in varying degrees of snow disaster and freezing damage. In order to restore tea production as quickly as possible and reduce the economic losses of tea farmers, the following technical key points are proposed according to the disaster conditions. 1. Pruning 1. Mild freezing damage (only leaves damaged): do not prune or lightly prune as appropriate. 2. Moderate freezing damage (production branches damaged) and severe freezing damage (framework branches damaged): prune when the boundary between the frozen-dead part and the healthy part is clear,
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Topdressing Methods and Technical Key Points for Cotton During the Flowering and Boll Stage
Cotton fields are currently entering the flowering stage one after another. After this, cotton will enter the flower and boll stage lasting more than 50 days, which is the peak period of fertilizer demand for cotton. During the more than 50 days of the flower and boll stage, cotton continuously flowers and sets bolls, and its demand for nutrients is continuous and uninterrupted. Therefore, except for particularly fertile soil, topdressing is necessary to supplement nutrients. Topdressing during the flower and boll stage is an important task in the management of cotton during the flower and boll stage. 1. For plots short of fertilizer, increase the amount of topdressing. In areas where the per capita cotton planting area is relatively large, some villages still maintain a state of low input and low output
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Key Technical Points for Summer and Autumn Cultivation and Management of Gastrodia elata
Summer and autumn are the periods when Gastrodia elata enters vigorous growth and maturity, and they are also the critical periods for its production management. If neglected or managed improperly, the yield and quality of Gastrodia elata will be seriously affected. 1. Drainage ditches for moisture removal. When Gastrodia elata enters the vigorous growth period, it is time to start checking whether the drainage ditches at the cultivation site are waterlogged and unobstructed. Soil moisture content can be kept at 60-65%. The three months of July, August and September are the period when Gastrodia elata needs the most water. During this time, the drainage ditches must be checked and cleared in a timely manner to avoid waterlogging. 2. Technical measures for mulching to retain moisture and lower temperature
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Key Technical Points for Pest and Disease Control During the Cultivation Period of Gastrodia elata
Gastrodia elata is a commonly used traditional Chinese medicinal herb. It is a special seed plant with no roots and no green leaves; it cannot nourish itself and must rely on symbiosis with Armillaria mellea to obtain nutrients for reproduction and growth. Therefore, cultivating Gastrodia elata differs from growing green plants, and three key steps must be managed according to its growth patterns. First, the cultivation of Armillaria mellea-infected wood; second, the selection and cultivation of Gastrodia elata seed tubers; third, the symbiotic cultivation of Gastrodia elata with Armillaria mellea. In all three production steps there is a chance of contamination by miscellaneous fungi, and if any step is done poorly, especially under unfavorable conditions, it will lead to failure in Gastrodia elata cultivation.
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Key Technical Points for Sexual Propagation of Gastrodia elata
Gastrodia elata, also known as red arrow, immortal's foot, and huilongzi, is an orchid family plant. Both the roots and rhizomes of Gastrodia elata can be used medicinally, and it is a scarce and valuable Chinese medicinal herb. The propagation methods of Gastrodia elata are divided into asexual propagation and sexual propagation; propagation by seed is sexual propagation, which not only solves the problem of a shortage of seed tubers, but also avoids variety degeneration caused by long-term asexual propagation. The key techniques for sexual propagation of Gastrodia elata are recommended below for reference. 1. Site selection. The site for cultivating seeds should be chosen in a place that is convenient to manage, sheltered from wind, and where the soil does not accumulate water. The cultivation pit should be shallow and rectangular,
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Key Technical Points and Detailed Methods for Sexual Propagation of Gastrodia elata
Early breeding and early sowing are important measures for shortening the growth cycle of Gastrodia elata. The elevation of Gastrodia elata growing areas is all above 1500 m, the temperature is relatively low, and the fruit harvesting period for breeding is from July to [month]. Because Gastrodia elata is bred in the same year and sown in the same year, attention must be paid to keeping to the season. To shorten the production cycle of Gastrodia elata, breeding can be carried out in low-elevation high-temperature areas or in greenhouses. When digging Gastrodia elata in winter, according to the requirements for selecting seed tubers, leave enough seed tubers for the next year. Cover the seed tubers well with soil so that they maintain a certain temperature and humidity, and in late February of the following year greenhouse breeding can begin,
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Pest Control Methods and Key Technical Points for Panax notoginseng Seedling Fields
When aphids and scale insects cause damage, spray 50% phoxim emulsifiable concentrate at 1000 times dilution or 40% dimethoate emulsion at 1000 times dilution for control. In plots with a large number of white grubs and cutworms, apply 50-75 g of 90% trichlorfon crystals per mu mixed with 20 kg of fine soil and broadcast, or mix with 50 kg of chopped fresh vegetable leaves and broadcast in the evening. For rodents damaging Panax notoginseng gardens, based on their habit of hiding by day and coming out at night, block their burrows during the day and place rat traps, rat cages
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Detailed Explanation of Prevention and Control Methods and Key Technical Points for Panax notoginseng Blight
Blight, also known as "leaf-drooping rot," begins to occur from April to May, and becomes severe from July to August. After being affected, dark green irregular lesions appear on the leaves or petioles, and the lesion color then deepens. The affected parts become soft, and the leaves look as if they have been scalded with boiling water, appearing semi-transparent, and later dry up or droop and stick to the base of the stems. Prevention and control methods: First, after harvesting the fruit, cut off the aboveground parts, clean the field, and spray the bed surface with 1-2 degrees Baume lime sulfur mixture for disinfection. Second, before the disease occurs, spray 1:1:200 Bordeaux mixture or 50% carbendazim 1000x solution, once every 7 days, for
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