Precooked onion convulsions, also known as bolting in advance, refers to the phenomenon of convulsions on the onion has not yet grown to a certain extent. Onion is a green body vernalized crop, when the seedlings grow to 0.7 to 1 centimeter, in the low temperature condition of 4 ~ 5 °C after 40 to 60 days can pass through the vernalization stage, to the longevity spring conditions in the following year can be bolted to flowering, Seriously affect its output. Farmers should take the following measures as early as possible.
1. Choose the right variety. The use of winter strong, slow response to low temperature, resistant to twitching fine varieties. This is an important measure to control early convulsions. In general, red onions have fewer unripe convulsions than white onions. When introducing, it is generally not easy to introduce bolting from high latitudes to low latitudes, but it is prone to twitching from low latitudes to high latitudes.
2. Select the appropriate sowing date. Appropriate sowing time is the most effective measure to prevent onion convulsions. Early sowing, the formation of large seedlings before the winter, it is easy to vernalization, the rate of convulsions after the spring is high. However, the seeding was too late, the seedlings were too thin and weak, which reduced the ability to resist cold and affected the yield. The suitable sowing date for me is suitable before and after the white dew.
3. Sowing density should be appropriate: too thin sowing, nutrition area is too large, excessive fertilizer at the seedling stage, will make the seedlings grow too large, so to master the appropriate sowing density, the general mu seed amount 4 to 5 kg, an acre seedlings can be moved Plant 8 to 10 acres of land.
4. Grade seedlings, timely planting. When planting, the seedlings must be carefully selected and some large seedlings must be removed to prevent it from passing through the vernalization and becoming immature convulsions. Of course, some small seedlings, weak seedlings, and diseased seedlings must be removed to prevent infectious diseases and affect yield. The colonization should not be premature so as to avoid low temperature conditions and stimulate the emergence of immature convulsions by the vernalization of the seedlings.
5. Strengthen fertilizer and water management. Nitrogen fertilizer should not be too much at the seedling stage. Otherwise, the seedlings will grow too profusely. When they encounter low temperatures, they will easily bolt through the vernalization. After the beginning of spring, we must timely top-up fertilizer irrigation to promote vegetative growth, to prevent insufficient vegetative growth, emergence of immature bolting.
6. Timely removal of inflorescences. If you find bolting strains, you can manually remove the inflorescence to avoid consumption of nutrients, do not pick the onion tube, to prevent the invasion of rain bacteria caused by decay.
7. Use hormones to control convulsions. The use of 0.25% ethephon or 0.16% of Qingxin for spraying at the seedling stage or after flower bud differentiation has a certain effect on the inhibition of pre-convulsions.
Sweet pepper should be a very common vegetable, and it is also loved by the people. Moreover, this pepper has no spiciness, so it can be eaten by the elderly and children.
Then sweet peppers are generally used as side dishes. Sweet peppers have the effect of improving eyesight, improving immunity, and can also diuretic and stomach and so on.
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