Under continuous rainy weather, the light is weak and the photosynthesis of the vegetables is weak. The organic matter synthesized by the leaves will be greatly reduced, the growth of the plants will slow down or the growth will be unbalanced, and the fruit will also be deformed due to inadequate nutrition supply. In this case, many vegetables have curled leaves, resulting in a significant reduction in the total area of ​​photosynthesis. So, how should we solve the curling problem? The reporter believes that the following three aspects should be taken into account to adjust.
First, the root cause of the disease should be identified based on the curl state of the leaves. The leaf rolling is mainly due to the stomatal closure of the leaves under stress conditions and a self-protective mechanism produced by the leaves. Take tomato as an example, there are two cases of curling of the parietal lobe and curling of the lower leaves. One is due to high-temperature disorders, most of the leaves are rolled up, and the second is hormonal intoxication, such as when 2,4-D or CMC is used excessively. , will make the tomato leaves or growing points bent, the new leaf can not be normal expansion, leaf edge distortion, stem bulge, lighter color. The third is locust damage, leaf narrowing, stiff erection, shrinkage or distortion, and finally baldness. Fourth, fertilization is unreasonable. If nitrogen and potassium are low, the absorption of trace elements such as magnesium, calcium, and boron will be affected, which will cause the top 2-4 leaf petioles to curl on the top of the plant, even if they roll into a circle, with the As it grows, its curling symptoms gradually decrease, and some even return to normal. The curling of the lower leaves is often accompanied by the occurrence of yellow leaves. The symptoms are mostly yellowing between the veins of the lower leaves and rolling upwards. When they are severe, they roll up into a tube and spread upwards, mostly due to water shortages caused by root injury or soil drought.
Followed by symptomatic medication to correct. Correspond to the root causes and solve them one by one. The first is to comprehensively use various agronomic measures to reduce the greenhouse temperature and weaken the light intensity in good weather; second, spray 6000 times more to add Yunda 120 and cytokinin to ease hormonal intoxication; Nisolon + mixed enemy to prevent and control; Fourth, reasonable fertilization, increase the amount of potassium fertilizer, leaves added calcium, magnesium, boron and other trace elements. The curling of the lower leaves should also be combined with the treatment of root diseases to strengthen the water absorption capacity of the root system.
Then it is a reasonable supplement to strengthen the function of the leaves. After the leaf rolling symptoms are relieved, the functional leaf fertilizers, leaf potassium fertilizers containing potassium dihydrogen phosphate, amino acids, alginic acid, and amino oligosaccharides, such as photosynthetic power, super-normal potassium dihydrogen phosphate, and US Green, green Qiao, etc., to strengthen the blade function, as much as possible to increase the photosynthesis intensity under low light.
Fiberglass Mesh
Fiberglass mesh is made by soaking and coating with macromolecular alkali-resistant latex on the basis of C-fiberglass and E-fiberglass. The color of fiberglass mesh is white, black, organge, blue, yellow or as per customer's needs. And the fiberglass mesh's package can also as per customer's requirement to finish. The fiberglass mesh be widely used on : wall reinforcement, reinforced cement products, waterproofing favrics, the roof waterproof, enhance the skeleton of plastic and rubber, fire prevention board, highway parements, joint tapes of buildings.
The advantages of fiberglass mesh:
high strongth
good alkali resistance
prevent cracks and deformations
easy to be constructed
more durable
Fiberglass Mesh,Fiberglass Mesh Screen,Woven Fiberglass Mesh,Fiberglass Mesh Tape
ANPING COUNTY SHANGCHEN WIREMESH PRODUCTS CO.,LTD , https://www.scwiremesh.com