The cultivation of overwintering cabbage in the open field has been welcomed by local farmers. However, due to improper planting patterns and the impact of SARS on the spring of last year, the efficiency is not high. Now, the efficient cultivation mode in the past two years has been briefly introduced.
I. Variety selection
At present, there are many varieties of winter cabbage, but the quality is uneven. "Northern Wintercrown III" (formerly known as Wintercrown III) is of stable quality and is developed by the Northern Horticultural Research Institute. It is suitable for planting in northern areas such as Shandong, has strong resistance to low temperature vernalization, and is resistant to low temperature of 15°C. , Single weight 1.5 kg ~ 2.0 kg, nearly 10,000 kg per mu. Can be connected with corn, cotton pods, or with fruit trees, wheat intercropping.
Second, efficient cultivation mode and benefit analysis
Exploiting winter cultivation: Put seed, plastic film, and fertilizer for a total of 200-250 yuan/mu, about 3600 acres of planting, and 4,000 kg/mu of net vegetable harvest. Harvest from the end of April to early May. In recent years, the approved price is 0.12 to 0.35. Yuan/500 grams. Income of 1500-4200 yuan / mu; less water than wheat, do not use pesticides, planting an acre of cabbage top 5 to 20 acres of wheat income. Harvest cabbage is sunny in the spring, planting winter cabbage more than a month earlier than wheat. Management is simpler than wheat, and income is 5-20 times that of wheat. The “Gan 11†and “8398†planted with small sheds can be harvested and listed at the same time, with less investment and avoiding the cumbersome cultivation of the “Gan 11†and “8398†winter seedlings in the winter.
Small arch planting: Promote the planting pattern, high efficiency, in 2003 Lacey, Longkou, Anqiu small arch shed planted in early April harvest, listed at the price of 0.7 yuan / 500 g, earlier than other cabbage varieties small shed planting Harvested nearly a month, mu income of around 10,000 yuan. The total investment is based on the above input, adding 600 yuan per mu to the plastic film and bamboo material of the small arch. This model is the best model for planting "Northern Winter Crown III".
Third, the cultivation techniques
1. Seedling raising: The variety is planted from September 20 to October 10, and the ability to grow large seedlings in early winter is strong, but it is not possible to blindly grow seedlings early. Large seedlings are prone to vernalization and convulsions. Therefore, the nursery time is controlled from September 20 to October 10. Use 40 to 50 square meters per acre seedbed, level the seedbed, spread 1 kg of diamine evenly on a 50-square-meter seedbed and mix the seedbed soil, and pour through the bottom till it is evenly sowed after water infiltration. Use 60 grams per mu. The seeds were distributed evenly and sowed at the time of sowing, covered with 0.2 cm thick fine soil, covered with mulch film, and the mulch was removed after three days.
2. Seedbed management: After seeing the seedbed, the seedling bed is dry and wet. After 25 days to 35 days, the seedlings grow to 3 to 5 leaves and can be transplanted into the field.
3. Transplanting: The seedlings were transplanted from October 20 to early November. The spacing was 45×40, and 3500 to 3800 plants were planted in the acre. Watering immediately after planting, conditional Mushi 50 kg diamine or 3 to 5 square chicken manure as the base fertilizer, basal fertilizer when the site preparation.
4. Buckled mulch: Cabbage seedlings are covered with glutinous rice during the period from the end of November to the beginning of December. Cabbage seedlings are not drawn out and winter is not watered.
5, buckle small arch shed: in advance listed in mid-January can cover a small arch, this model has high cultivation efficiency. Small sheds do not need to cover wheat straw and hay dumplings. The small shed was removed at the end of March.
6, the winter cultivation of exposed cultivation of spring: the seedlings out of the film in the middle and late March, pressure soil, plastic film can not be removed to protect the temperature. At the end of March, according to the soil moisture, 25 kg/mu of carbonic amine was applied during watering.
7, holding the heart of the management: hold the heart of the soil watering according to the public opinion and Shida Shiji 100 kg / acre. One-time harvest from the end of April to early May.
Most products of Fluorine-containing Benzonitrile is a colorless transparent liquid and has a pungent odor. It was widely used in pesticides, pharmaceuticals liquid crystal material manufacturing. High efficiency, low toxicity and residue characteristics. Through extensive research and production practice, we have found some good manufacturing processes of fluoro-containing cyanophenyl products. In addition, we have groundbreaking research on ratio of raw materials, solvent selection, the choice of solvent concentration, related use of catalysts..
Fluorine-Containing Benzonitrile
Containing Benzonitrile,Trifluoro Benzonitrile,4-Amino-3-Trifluoromethoxy,Fluorine-Containing Benzonitrile
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com