In what season is cucumber a vegetable? How to solve the drug damage caused by spraying pesticides?

Cucumbers are crisp and delicious. They can be eaten raw or fried. They all taste good and are very popular with consumers. Cucumber is also one of the favorite foods for people who lose weight, which is low in fat and has a strong sense of satiety. Cucumbers are planted all over our country. Let's take a look at what season cucumbers are. How to solve the drug damage caused by spraying pesticides?

In what season is cucumber a vegetable?

What season cucumbers are for vegetables depends on when they are planted. If cucumbers are generally planted in spring, then the maturity of cucumbers is about April and May, and the mature cucumbers in this season are called spring cucumbers. Another kind of cucumber is autumn cucumber, which is generally planted in autumn and can be harvested in 1990. this kind of cucumber grows better than spring cucumbers, thanks to the relatively high temperature during this period, and Rain Water is also more abundant. This is just good for the growth of cucumbers.

Second, how to solve the drug damage caused by spraying pesticide on cucumber?

1. Too much concentration or too much liquid spray

When ethephon is sprayed, or the concentration is too high, or the spray solution is too much, when the damage is lighter, the cotyledons and true leaf margin become chlorotic and yellowing, then dry up; the leaf margin defect of true leaf is obviously reduced, and the growth is inhibited to a certain extent. When the drug damage is serious, the dry edges of the cotyledons or the real leaves that have grown during spraying show chlorotic and albino stripes, the missing edges are small, and the leaf edges close to the back in the shape of a parachute. After that, the true leaf defect was still shallow or absent, and the growth was seriously suppressed. The patients with mild drug damage can be recovered through fertilizer and water management and spraying hormone. When the drug damage is serious, it is extremely difficult to recover, although spraying hormones and other rescue, but the effect is generally not good. In this case, more emphasis should be placed on the re-preparation of seedlings. When the roots are irrigated with metalaxyl manganese zinc at the seedling stage, the tender stems will be burned.

2. Misuse of pesticides that are allergic to cucumbers

Pesticides that are allergic to cucumbers include phoxim, 1605 and so on. Some of these pesticides have already been banned, or banned on vegetables (1605, etc.), while others are allergic to cucumbers and are extremely prone to drug damage. The drug damage caused by this is generally extremely difficult to save. When Fanglu and Zuoguoling are used on the overgrown melon plants, the upper part will obviously shrink and wrinkle, showing the shape of new branches and leaves of pea.

3. Do not apply pesticides in accordance with regulations

It is common to spray Bordeaux solution or copper sulfate suspension at high temperature, and it is more likely to be caused by mancozeb. Mancozeb is easy to cause drug damage when it is exposed to high temperature or high concentration after spraying. The damaged leaves are generally wrinkled and stiff, and the leaves are black and green. Manganese excess is often caused when mancozeb is used continuously, especially at low temperature. Manganese excess, also known as brown leaf blight, is first of all the browning of the reticular veins of the leaves, like rust water infiltrating outward from the veins of the leaves. Necrotic spots can be seen when looking at the sun, and in severe cases, the plants die. When the content of manganese in the leaf is too high, the branch vein browns at first, then the main vein turns brown, and then with the excessive amount of manganese, the bristles of the petiole are black and the leaves wither.