Tips For Growing Vegetables Under Film
Different uses of film in the area
Different uses of film in the area
Polymer film is widely used in the production early vegetables. From it makes translucent cover hotbeds and greenhouses, Temporary shelter in unheated soil, mulch the soil it, etc.
Synthetic films - polyethylene, polyamide, and PVC is made from oil products, refined coal. Film in comparison with glass have advantages: they are lightweight, unbreakable, have a plasticity that allows them to meet the time-dependent membrane structures, often conveyed in the course of the season from one area to another.Synthetic tapeFlexible, elastic material matt white cloth width of the film is different. The film is more resistant to acids and alkalis, less - of organic solvents and mineral oils (such as artificial drying oil) that must be considered when stained wooden frame members to film shelters. It does not absorb water, gas and malopronitsaema not permeable to water and water vapor.
The advantage of film
At low temperatures it is slightly compressed and expanded at high. However, the elongation and irreversible shrinkage does not exceed 1-2.5%, and it is little slack in rainfall.
On light transmission film is close to the glass, but it is better to let ultra-violet rays. Valuable properties with aging it is gradually declining. The aging process is accelerated because of sharp fluctuations in temperature, high-voltage UV radiation, dryness of the air and other atmospheric factors.
Film is used more intensively in the mobile device or laptop, skeletons. In this instance, it can be grown not only heat-loving, but also cold-resistant vegetable crops and accelerate the yield on 10 - 15 days.
Most of the failures growing seedlings associated with the sowing of seeds in properly cooked or ordinary garden soil, which after 2-3 irrigations becomes hard as cement. In dense soil accumulate large amounts of carbon dioxide and the roots suffocate, especially when there is excessive watering on cloudy cold days.
Gardeners are trying to rectify the situation dressings, making a lot of nitrogen fertilizer, the excess nitrogen causes poisoning plants - on the edge of the leaf appears brown rim. In cold soil (below 10 C), the roots absorb phosphorus badly. If phosphate fertilizer made in sufficient quantities, then carry out foliar fertilizing, spraying the plants on the night of 1% solution of superphosphate.When you add sawdust to the soil nitrogen starvation can occur even when making nitrogen fertilizer of 50 g / m : plants have small leaves pale-green, appressed to stem. A week after the introduction of these fertilizers in doses of 15-20 g / m green leaves, stem and deviate from the veins are green.
Plants need for potassium and magnesium
In cloudy weather, low light plants growing need for potassium and magnesium. With a lack of potassium leaves are dark green, the tips of the lower leaves turn black (edge ??burn). Magnesium starvation especially clearly manifested usually on lower leaves Cabbage and cucumber. Veins of them remain green, and yellow space between them, in acute starvation between the veins formed brown spots of dead tissue. The introduction of 20 g / m kalimagnezii eliminate starvation on these, but the damaged leaves will not recover. If there is no kalimagnezii, then make a 15 g / m potassium salt and spray the plants 1-2% solution of magnesium sulphate (at night).
Supplementary feeding of trace elements
To prevent starvation of micronutrients foliar feeding is carried out with a solution of the following composition (in g / l) zinc sulfate - 2, copper sulfate - 0.5, cobalt sulfate - 0.3, ammonium molybdate - 0.1. Foliar trace elements can be combined with the introduction of magnesium, but with phosphorus fertilizers. This positive effect on plant development.
You can not score pots and boxes of badly rotted manure, as it affects plant growth, the top young leaves turn yellow due to lack of copper and iron. Signs of deficiency disappear in 10-12 days. If you water the plants with a solution of the following composition, in a bucket of water, 1 g of copper and 5 g of ferrous sulfate, penicillin bottle vinegar to 1 m .
The second hazard cause stunted seedlings receiving- Thickened plants.
Transplanting
Seedlings are planted after the cessation of frost. A small number of potted plants can be planted earlier, but the cold snap at night they close the banks or paper bag. Plants carefully removed from the package, dipped into the wells of pre-cooked and covered the roots of the earth, watered, and then the surface of the wells do not fall asleep watered the ground. Bezgorshechnuyu seedlings upper harbor for 1-2 days burdock leaves or paper, it allows the vegetables to settle down faster and easier to move a transplant. To restore the the root system requires a large amount of oxygen young spines grow back.
by: praveen.imm
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