Key points of summer and autumn spinach cultivation techniques

1. Variety selection

Choose large-leaf varieties with strong heat resistance in Japan.

2. Cultivation season

Summer and autumn leafy vegetables grow fast and mature early, and the sowing period can be arranged more than 50 days before the planned listing, and can be planted from mid to late June to mid to late July.

3. Seed processing

Before sowing, seeds must be soaked at low temperature to promote germination. Soak the seeds in cold water for 24-30 hours, then wrap them with gauze, hang them in a water well at about 20cm from the water surface, dip the gauze into the water every day to wash the seeds, and germination can occur after 2-3 days. You can also spread the soaked seeds in the shade of the room to promote germination, turn it over every day and keep a certain amount of water, and it can also germinate after 5-6 days. Or immerse the soaked seeds at 15-20 ° C, and germinate in 3 to 4 days. The seeds are sown as soon as they are white.

4. Site preparation, fertilization, seeding

Before cultivated land, 2000-3000 kg of rotten and mature farm manure, 45 kg of nitrogen, phosphorus, potassium compound fertilizer, 1.5 kg of zinc fertilizer, and 0.7 kg of boron fertilizer were applied as basal fertilizers per acre. Shallow ploughing of 15-20cm, smashing the soil block to make 1.1m wide flat hoe (including hoe), the hoe surface is flat, the soil is even, the hoe should not be too long, and 10-20m is suitable. Before 10:00 am and after 4:00 pm, seed by wet sowing. That is, first water, after the water seeps down, spread the seeds, and then cover 1.5-2cm thick fine soil. In order to ensure the emergence rate, the seeding amount per acre can be increased to 3 kg. After sowing, it can be used as a straw to cover the surface of the stalk. If necessary, a shading net can be used to cool and moisturize. Support the shade net with thick bamboo poles and branches with fingers, and lift it 50cm off the ground. It can also prevent scouring from heavy rain to ensure that Miao Qi is even. After the emergence, the covering was removed in the evening.

5. Field Management

After emergence, thin seedlings are carried out in places where the emergence is too dense.

For the first watering, the water flow should be small and the amount of water should be slow, so as not to rush the mud too quickly and muddle the cotyledons and cause dead seedlings. Generally, water is poured once every 7-10 days, depending on the weather conditions. Keep the soil moist to reduce ground temperature.

The main disease at the seedling stage is cataplexy. After the spinach emerges, the field and plants can be sprayed with 3000 times solution of Luheng No. 1. If the disease is more serious, you can use 72.2% of PLEXIC 600 times liquid plus 68.75% of DuPont eBao 1000 times liquid spray.

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Food additive is a kind of non nutritive substance which is added in small amount to improve the appearance, flavor, structure or storage property of food. It refers to any substance artificially added to food for technical purposes in the process of food production, processing, preparation, treatment, packaging, transportation or storage. In order to improve the quality of food, such as color, aroma and taste, and to meet the needs of anti-corrosion and processing technology, synthetic or natural substances are added into food . At present, there are 23 categories and more than 2000 varieties of food additives in China, including Acidity Regulators, anti caking agents, defoamers, antioxidants, bleaching agents, bulking agents, colorants, color protectants, enzyme preparations, flavor enhancers, nutritional enhancers, preservatives, sweeteners, thickeners, spices, etc.

Product Description

Product Name: Beta-Carotene

Appearance: Orange Powder

CAS: 7235-40-7

Molecular formula:C40H56

Molecular weight :536.8726

Melting point: 178-179℃

Flashing point: 103℃

EINECS: 230-636-6

Specification: 1%;10%;20%;30%,50%,90%;99%

Testing Method: HPLC

Beta carotene is the molecule that gives carrots their orange colour. It is part of a family of chemicals called the carotenoids, which are found in many fruit and vegetables, as well as some animal products such as egg yolks. Biologically, beta carotene is most important as the precursor of vitamin A. It also has anti-oxidant properties and may help in preventing cancer and other diseases.

Beta Carotene is also known as a provitamin because it can be converted in our body into vitamin A after oxidative cleavage by beta carotene 15, 150-dioxygenase. In plants, beta carotene, acts as an anti-oxidant and neutralizes singlet oxygen radicals formed during photosynthesis.

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