When is spinach planted? Spinach planting time and planting management points
Spinach is a kind of leafy vegetable that Xiaobian likes very much. Its green leaves are very beautiful, and it is also very rich in nutrition. Therefore, many people like to grow some spinach, and they are safe and easy to eat. So what is the method of growing spinach? Let's take a look at it!
Spinach planting time
Spinach is the most cold-tolerant vegetable in leafy vegetables. Even if it is planted in the open field, it can safely overwinter. Therefore, spinach cultivation is best in autumn and winter. However, after the spring, the temperature will continue to rise, and the summer weather will be very hot. If the spinach planting variety is not properly selected, it is easy to reduce the commercial properties of spinach, such as narrow and small leaves, rough texture and flaws.
Now it is August, and it is the season of spinach sowing. Just choose the right time to sow and strengthen management. Not only can you taste fresh spinach as soon as possible, but also sell it. I believe the price is also good. Let's take a look at how spinach is grown and managed.
Variety selection and processing
Variety selection
Although the weather is still relatively high in the autumn, the sun is very strong. Therefore, when we grow spinach, we should choose a heat-resistant, short-maturing variety in the growing season, which can shorten the hazard time of pests and diseases. On the one hand, it can also mention the morning market.
Seed treatment
Spinach seeds are a kind of fruit, easy to aggregate, and the seed coat is hard. The inner layer is thickened with cork, so it is difficult to ventilate and permeable. Therefore, when the spinach is planted in autumn, the seeds are directly seeded. The rate of budding is very low at any treatment.
When sowing in summer or early autumn, the spinach seeds should be germinated, which is an effective way to ensure the seedlings. Select the seeds to ensure that the seeds are fresh and free of agglomeration, then soak the seeds in water for one day; then put them in the environment of about 22 degrees Celsius to germination, rinse once a day during germination to ensure that the seeds are not water-deficient and moldy, aerobic Growing. When the seeds are mostly white, they can be sown, and the seeding is generally carried out by spreading or stripping.
Sowing and field management
sowing
The main root of spinach is developed and coarse, and it grows mainly in the soil layer of about 30 cm. Therefore, the planting area should be selected in the loose and fertile, water and fertilizer, convenient for irrigation and drainage of weak acid areas. In the field, the base fertilizer is applied, about 5,000 kilograms of organic fertilizer per mu, and about 40 kilograms of compound fertilizer. After spreading evenly, it is deep, fine, and flat, ready for planting.
Autumn spinach can be used to spread seeds directly in the field. It should be even when planted, not leaking, and the field should be full and moist. After sowing, gently pull the soil into the soil with tweezers. A thin layer of soil (may not be covered). The sunshade can be covered according to conditions or weather conditions to prevent high temperature or rain washout. During the emergence period, the field is kept moist and sufficient; in case of drought, artificial watering can be used to accelerate emergence.
Field management
Autumn spinach grows slowly in the early stage, and it is necessary to do the work of cultivating and weeding in time. When two pieces of true leaves are used, the dense seedlings should be removed; then the thin fertilizer can be chased according to the situation, the temperature in the early stage is high, and the top dressing should be matched with watering; 4-5 When the leaves are topdressed, the topdressing is based on nitrogen fertilizer, such as urea or high-nitrogen compound fertilizer, which promotes leaf growth and lays a foundation for high yield and quality.
Nitrogen can enhance the chlorophyll content, photosynthetic rate, and root growth of spinach; especially in the late growth stage, if the nitrogen content is lacking, the peroxidation degree of spinach leaves is increased, and the malondialdehyde content may increase, which may reduce the premature senescence of spinach. difference. Therefore, in the late growth stage of spinach, or appropriate application of nitrogen fertilizer before harvest (not more than 40 kg per mu), can increase the photosynthesis rate of spinach, delay aging, and thus increase yield.
Spinach has no excessive requirements in terms of water and fertilizer, and it must be operated flexibly according to the situation. Organic fertilizer combined with inorganic fertilizer, combined with irrigation and irrigation; the field can not accumulate water, but also to maintain soil moisture of about 70%, the temperature is not more than 25 degrees Celsius is most suitable for its growth.
Pest Control
Spinach is a leafy vegetable. After the stems and leaves are damaged, it basically loses its edible properties. Therefore, it is very important to control the pests and diseases of spinach in time. The main pests and diseases of spinach include anthrax, downy mildew, virus disease, aphids, etc., which are all common in spinach. Precautions must be taken in advance to ensure quality.
Downy mildew
Downy mildew is the main disease of spinach and the "culprit" that affects its yield and quality. When the disease is firstly infected, the lesion is a small green water-immersed spot, and after the infection, it is round, or irregularly shaped yellow lesions; white mold layer appears on the back of the lesion. When the humidity is high, the leaves are rotted, or dried and wilted.
Spinach downy mildew is a fungal disease that is usually cold, rainy, and late in growth. It also has a certain relationship with the planting density in the field, easy accumulation of water, and poor permeability.
Prevention of this disease, in order to deal with the onset of the disease; early prevention and treatment, can be sprayed with metalaxyl, metalaxyl manganese zinc, or anti-virus cockroaches and other agents, once a week, 2-3 times can be effectively prevented.
anthrax
Anthrax is common in leafy vegetables and is also a major disease affecting the yield and quality of vegetables. It can cause damage to leaves and stems. A yellowish small spot appears on the leaf when it occurs, and a round or oval tassel ring spot is enlarged, and there are small black spots in the lesion.
Spinach anthracnose is caused by fungi, and it is heavier in the field with low soil moisture, high planting density and weak growth. In the early stage of the disease or before the onset of the disease, carbendazim, thiophanate-methyl, mancozeb and other agents can be sprayed and controlled, once a week, usually 2-3 times.
Spinach has a short growing season and is generally harvested in 3-40 days. Therefore, when using drugs and fertilizing, be sure to pay attention to the amount and concentration to avoid residue and pollution.
The above is about the introduction of daily vegetable spinach. As a kind of green vegetable, spinach can be fried alone or as a hot pot vegetable, and it has a high edible value. Therefore, if you like to eat spinach, this time is very good. Oh.
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