Yam, also known as Yam, is an annual herb. The tubers have smooth fleshy texture, distinctive flavor and rich nutrition. They can be used as both food and medicine, nourishing diets, and processing exports. In addition, the edible parts grow underground again. They are pollution-free and pollution-free, and are favored by domestic and foreign consumers. The Lvlou administrative village in Xinglong Town, Sheqi County, Henan Province has been growing yams since 1994. It has grown to 200 hectares and has become a pillar industry for local farmers. Under the guidance of the technical staff, they have explored a set of yam scorpion and efficient simplification of cultivation techniques. General production for many years last 3500--4500kg/667 square meters, the highest up to 5500kg/667 square meters, the output value - like 6000--7000 yuan / 667 square meters, up to 10,000 yuan, the economic and social benefits are very significant. The chair side CAD / CAM repair system has obvious advantages in aesthetic effect, operation time, patient participation and operation convenience. Discussion: traditional repair method: after the model is transferred, it will be sent to the technician's room for processing and making the final prosthesis. About one week, the final prosthesis will be tried on, grinded and bonded. The prosthesis was made in the technician's room. The patients need to accept the aesthetic effect of the prosthesis passively without any sense of participation. The implant repair method of chair side CAD / CAM system: obtain computer three-dimensional model by blue light scanning method, design and make personalized abutment and all ceramic restoration on computer, dye, glaze and bond after trial wearing, the whole restoration is made by chair side, patients can directly participate in the restoration design, and feel more involved. Conclusion: in the implant area of the anterior teeth, compared with the traditional implant repair method, the chair side repair system can get more satisfactory results, which is worthy of clinical application and promotion. Desktop Type Dental Milling Machine Dental Equipment For Lab,Dental Implant Milling Machine,Titanium Dental Milling Machine,Glass Ceramic Dental Milling Machine Shandong Carved Intelligent Technology Group Co.,Ltd , https://www.demetdent.com
First, choose the main varieties of high-yield disease-resistant varieties selection (bottom tuber obtuse, short thick stems), sparsely populated Hokkaido, Japan, virus-free, small tubers harvested in autumn and winter for the next year Daejeon species.
1. Establishing a scientific selection of land to establish disease-free breeding fields is a prerequisite for the control of short-stem nematode disease. The yam is resistant to drought and drought, and the tubers are deeper into the soil. Therefore, in the first year of Lian yam cultivation, it is necessary to choose a sandy loam with a high porosity, water system, and loose fertility. The clay, saline-alkali land, and the wet areas with poor drainage and high groundwater levels should not be planted, and we must prevent the sick from entering the fields. The soil is deep-sweeping once in winter and early spring, and it is usually 0.7--1m for deep-turning. The second time and later, it is only necessary to combine light-flooding once a year, preferably 40cm deep. It is better to use the opener to deepen the place where conditions permit. Winter frozen spring sun mature fertilizing soil. If the deep turning is too shallow or there is a hard borer, the underground tubers are difficult to extend downwards, easily deforming and reducing the value of the commodity. Usually a width of 3 - 4cm, adhere to deep trenches.
Third, the two-film insulation prime yams sex hi warm, intolerant of frost, seedlings began to germinate around 10 °C. By pre-emergence of double-film insulation in early spring, the growth period can be promoted in advance to facilitate early maturing and high yield. Generally, the disease-free small tubers are cut into small 5--6cm segments at the end of February and early March, and 30-35g of each segment or 15cm of yam seedlings are planted under the axilla. Seedlings were first soaked in warm water of 50-55°C for 10 minutes, combined with 1000-times solution of methylisophosphoric acid, and then lime powder was added at the incision and allowed to dry for 2 - 3 days until the incision healed. Dry, leeward and sunny, and no short-line nematode disease sources to build a place to germination. Adhere to the first reminder after the category of "leader", Shun placed, germination separately. In general, four to five layers per bed, one layer of seedlings are moistened with fine sand, and then the cover film is placed on top of the plastic film. When the young shoots are about 1 cm in size, they can be planted in a straight line and a straight line.
IV. Proper transplanting in appropriate period When the soil temperature in 5cm soil layer stably passes through 9--10°C, the plant will be transplanted in sunny days (Yangtze River and Huaihe River basins may be in early April, and the north will be appropriately postponed). Before the transplanting, open the groove in the open trench, the ditch is 8-10cm. The spacing between the rows is: 40cmx55cm for the Japanese No.1 plant, 3000 - 3500 for every 667m2, and 32cmx40cm for the local variety. It is appropriate to plant 4500--5500 plants per 667 square meters. Normally, the germinating seedlings can emerge in 25 days after planting, and 40-50 days without germination can emerge.
5. Pay attention to the pre-emergence. In addition to the generally rainy season in late June or early July, the weeds will infect at this stage and seriously affect the growth of seedlings. Therefore, if the grassland damage is heavy in the area, after the planting, it can be used to spray the ground evenly after every 667m2 with 48% trifluralin EC 150--200mL and 50kg water. In the middle and late growth stage, weeding is done manually in combination with cultivators to avoid grass shortage.
Sixth, scientific management of fertilizer yam is a fertilizer-resistant crop, cultivation should be dominated by organic fertilizer base. Usually after the first trencher (artificial) ditching and turning soil, 150kg per 667m2 of cooked and cooked cakes, 5000m high quality manure excrement (no sources of shortline nematode disease), 25kg of potassium sulfate, and high quality ternary compound fertilizer. 100kg, evenly spread on the surface, shallowly ploughed into the soil 2 - 3cm. After the seedlings were planted, they were combined with loose soil to protect the earthworms before and after the scaffolding, and topped with 800 kg/667 m2 of quality rotting fertilizer. In the beginning of the year, before and after the “summer heatâ€, 2000kg/667m2 of human and animal manure was applied, and potassium sulfate 20kg/667m2 was added to promote tuber growth. Before spraying, 0.3%-0.4% potassium dihydrogen phosphate solution was sprayed twice to three times before initiation of autumn to promote underground tuber enlargement. Tuber during the expansion period of drought, can be combined with wheatgrass cover, ground water moisturizing (do not flood flood irrigation), timely drainage in rainy season, humidity and anti-staining.
Seven, overhead cranberry management yam management for short-day crops, the accumulation of nutrients need light, and the growth of the ground stalks about 3cm, usually up to 20cm in the cane seedlings, that is 10 - 15 days after emergence, use more than 2m branches, just firewood Such as the timely adoption of adult-shaped stents, every three acts a bundle, lead to climb up. Add a 3m supporter to each bundle that is conditional and tie it up to prevent lodging.
Eight, due to moderate chemical regulation of seedlings to effectively inhibit overgrowth of part of the vegetative overgrowth of the ground and reasonably regulate the distribution and operation of photosynthetic products within the plant, when the vine climbs to the top of the rack (in early July), 200x10 (negative 6 times) should be used. Square) paclobutrazol, with 15% wettable powder 50--60g per 667 square meters, 50kg of water, and spraying evenly on the plant growth point. If the plant growth is too prosperous, spray once every 7-10 days, even spray 2 - 3 times, avoid repeated spraying; those who grow badly hanged, so as to avoid excessive inhibition of vegetative, affecting normal growth.
Nine, to strengthen the pest control Yam worms (mainly seedlings, especially the main leading bacteria, spread by the soil) often heavy and rainy years have been serious. According to the experiment, the treatment of Litsea yam before the transplanting is an important way to control its occurrence. The seedlings used in the new area were treated with chemicals, and the seedlings were soaked with 600 times of 40% methylisotriphosone solution for 48 hours prior to planting. Even if they were replanted for 4 to 5 years, they would still not be affected or rarely affected. During the rainy season, sprinkle 800--1000 times 50% tumefax or 50% rapamycosis every 7-10 days for 2 to 3 times. Combined with dehumidification, timely prevention and treatment of anthrax and brown spot.
X. Carefully harvesting can be harvested when the frost is carefully harvested until the next year. Because of its simplified cultivation, it is not necessary to deepen it every year. Therefore, it is important to pay attention to smashing the deep soil.
Yam seedlings were digged for winter storage in mid-November. Remove the damaged before storage, use 100 times 50% carbendazim liquid to sterilize, dry, and then use a small amount of sand to accumulate, room temperature control at 0 °C or more, in order to facilitate insulation and antifreeze, protection seedlings overwintering.
Tomato scorching occurs most often at the shoulders of tomatoes and is characterized by a transparent leathery film on the fruit surface that gradually turns to white or yellow-brown patches. When the plaque is rotted by a fungus, white mold and black mold will grow and the fruit will rot.
Control methods:
1, to strengthen the management of sunshine; to timely ventilation, to promote the temperature of the leaves to fall, for sun is too strong to use shade net cover to reduce the temperature within the shed, you must spray new high-fat film, a layer of protective film on the surface to prevent sunlight Directly expose the tomato to the sun.
2, strengthen water and fertilizer management. To timely irrigation, topdressing organic fertilizer, spraying fruit Zhuang Ti Ling in the young fruit period, increase the amount of nutrient delivery, strong pedicle, strong seedlings, prevent fruit drop, cracked fruit, malformed fruit occurred.