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Today, people are increasingly demanding the quality of agricultural products. The production of vegetables that are harmless to human health has become a general trend. Now, we will introduce the pollution-free cultivation and storage technology of spinach. The production site requires that the environmental conditions in the place of production meet the requirements of GB/T 18407.1-2001. Soil conditions: flat terrain, convenient drainage and irrigation, deep tillage, good physicochemical properties, and high fertility, suitable for silt loam, loam and light clay. Cultivation measures Variety selection: Selection of disease-resistant, high-quality, high-yield, strong resistance, adaptability, good variety of goods. Seed quality should meet the requirements of GB16715.5-1999. The suitable varieties of spring spinach are “Sheng Pioneerâ€, and the suitable varieties of autumn spinach are “Xi Luo No. 1†and “Ultimate Generalâ€, and the suitable varieties for overwintering spinach are “Olleâ€. Site preparation: cultivated with sorghum and covered with plastic film. Ridge cultivation: 2 rows of spinach per ridge, small row spacing 20 cm, large row spacing 30 cm, ridge width (open width) 30 cm, ridge height 20 cm, spacing 3 to 5 cm. Flat hoe cultivation: 畦 width 1 to 2 meters, spaced 20 centimeters, spacing between the seedlings 5 ​​to 8 centimeters. Sowing: Select the appropriate sowing date based on weather conditions and species characteristics. Spring spinach can be sown when the soil surface is thawed 4 to 6 cm deep or when the average daily temperature reaches 4 to 5°C, that is, before and after March 20th. Autumn sowing is planted in early September and sown in October. There are two kinds of sowing methods: seeding and drilling. When the seed quality is high, the seeding period is appropriate, the seedlings are not planted, and the harvest is once, the seeding amount per 1/15 hectare (1 mu) is 1 to 1.5 kg. If the sowing date is later or the seedlings are harvested in stages, the sowing amount may be increased appropriately. The seedlings: When the seedlings grow two true leaves, the large amount of seeded fields and seedlings can be seedlings. In the spring and autumn, the spacing is 5-8 cm. Reasonable watering: spring watering, pouring water before sowing. Overwintering, timely pouring "frozen water", pouring "frozen water" can delay pouring "turning green water" time. In early spring, watering should be done with small water. Fertilization: According to spinach's fertilizer requirement law, soil nutrient status and fertilizer effect, through the soil test to determine the appropriate amount of fertilizer and fertilization methods, in accordance with the combination of organic and inorganic, base fertilizer combined with top dressing principles, the implementation of balanced fertilization. Each 1/15 hectare (1 acre) is fully cooked with more than 1,000 kg of high-quality organic fertilizer, 30 kg of compound fertilizer and 10 kg of urea. Combined with ploughing and soil preparation and mixing thoroughly, attention should be paid to the appropriate addition of calcium, boron and other trace elements. Top dressing: Top dressing is mainly quick-acting nitrogen fertilizer. It should be applied according to soil fertility and plant growth status. Apply urea no more than 10 kg per 1/15 ha every time. No quick-release nitrogen fertilizer is applied within 15 days before harvest. Reasonable adoption of external root fertilization technology and quick nutrition supplement through foliar spraying. It should be noted that organic waste such as industrial waste, municipal waste, sludge, and unfermented, rotten urine, which does not reach a detoxification index, should not be used. The fertilizer used should meet the national product quality standards and meet the fertilizer requirements of pollution-free spinach. Priority should be given to agricultural control, physical control, and biological control technologies for pest and disease control, as well as scientific and reasonable chemical control. High-toxicity, high-residue, high-bio-enrichment, high-tertiary (teratogenic, carcinogenic, mutagenic) pesticides and their mixed pesticides that are prohibited by the State should not be applied. The pesticide application strictly complies with the provisions of GB4285 and GB/T8321. (1) Agricultural control measures. Use anti-(endurance) disease-resistant varieties to implement rotation cropping. Strengthen tillage weeding, clean the pastoral. Cultivate disease-free and strong seedlings. Seed disinfection treatment before sowing, the control of downy mildew can be used 50% thiram WP or 75% chlorothalonil wettable powder seed amount of 0.4% of the seed dressing can also be used 25% WP wet seed by seed 0.3% of the amount of seed dressing. (2) Physical control measures. Silver ash film can be used to avoid fleas or yellow plates (columns) to kill locusts. (3) Biological control. Protect natural enemies, create an environment conducive to the survival of natural enemies, and choose pesticides that have low lethality to natural enemies. Release natural enemies, such as predators and parasitic bees. (4) Chemical control. For the cabbage caterpillar, diamondback moth, beet armyworm, etc., the use of silverfly moth virus (Oster Green No. 1), beet armyworm virus, diamondback moth virus and Beauveria bassiana, Bacillus thuringiensis preparations prevention and treatment. Or use 5% Dingchong (Suppress) 2500 times EC, 5% flufenoxil (Cai Ke) 1500 times, 50% phoxim 1000 times, high efficiency cypermethrin spray control, according to the instructions Choose the right dose. For the prevention of downy mildew, it is possible to use 25% metalaxyl wettable powder 750 times, or 69% ank manganese zinc wettable powder 500 to 600 times, or 75% chlorothalonil wettable powder 500 times, or Teli. 800 times liquid spray. The above agents are alternately sprayed and sprayed for 7 to 10 days for 2 to 3 consecutive times. The virus disease can be controlled by using 20% ​​of virus A wettable powder 600 times, or 1.5% of diseased Ling cream 1000 ~ 1500 times spray. The control of aphids can be as follows: 10% imidacloprid 1500 times or 3% acetamiprid 3000 times, or 5% pyridine high chloride 3000 times, or 50% anti-inferiority WP 2000 to 3000 times, or 600 times more than Terapline Liquid spray. The control of Spodoptera exigua can be sprayed with 52.25% of farmland emulsifiable concentrate 1000 to 1500 times, or 4.5% of highly effective cypermethrin EC 1500 to 2000 times, or Wuda Oasis No. 1 500 times or 1.8% A. versicolor 1500 times. Harvest Spring Spinach is harvested from early May to early June, and autumn spinach is harvested from mid-October to late, and harvested from late March to late April. Harvesting standards: Dark green color, large leaves, short stems, thick flesh, and no complete twitching of trees. The length (from stem base to tip) is about 40 cm. No pests and eggs, no old leaves, yellow leaves, no black roots, macular diseases. Packaging, transportation and storage packaging should be marked on the pollution-free agricultural products, product name, product standard number, producer name, origin, specifications, net content and packaging date. Packaging (boxes, baskets, bags) requires consistent and firm dimensions. The packaging container should be kept dry, clean and free of contamination. Plastic boxes should meet the requirements of the relevant standards. Should be packed according to the same variety and specifications. Each batch of product packaging specifications, units, and quality should be consistent. The net content of each package must not exceed 10 kg and the error should not exceed 2%. When transporting, it should be lightly loaded and unloaded to prevent mechanical damage. Transport tools should be clean and free from pollution. Pay attention to anti-freezing, sun protection, rain protection, and ventilation when transporting. Storage should be stored under shade, ventilation, cleanliness and sanitation conditions according to species and specifications, and should be protected against sun exposure, rain, cold damage, pests and diseases, mechanical damage and contamination with toxic substances. The suitable storage temperature is -6 to 2°C, and the relative humidity of air is 90% to 95%. China Agricultural Network Editor