In the cultivation of peppers in solar greenhouses, the most troublesome problem is that there is no seedling, dead trees or wilted plants after the peppers are planted. What causes these, and how to prevent it?
1. Field symptoms
Wilting plants appeared in the field after the pepper was planted. The main manifestations are long seedling delay; weak plants; yellow leaves; wilt phenomenon on sunny days. The main reasons are the following:
1. Colonization is too deep. Some farmers may consider the need for watering after planting, fearing that the water will overwhelm the seedlings, and almost one third of the stems are buried in the soil. Due to the high temperature and high humidity, the stems turn brown. Even decay, but this is not a disease and cannot be controlled by spraying.
2. The adaptation process of seedlings at seedling stage. Before the planting, the seedlings have adapted to the soil environment of the seedbed, and after the planting, because of the replacement of the soil, there must be a certain period of time to adapt to the soil environment in the arch shed, which causes the delay of the seedling growth.
3. The planting time is too early, causing rooting phenomenon. Since most vegetable farmers did not adopt ridge planting, and most of them adopted flood irrigation, the air permeability was not good, which resulted in the rooting. When pulling out the wilted seedlings, you can clearly see that some of the capillary roots have been necrotic, and the remaining root system is not enough to maintain the nutrients and water required for normal growth. On sunny days, the temperature is high, the plant's transpiration is large, and more water is needed, so wilting occurs.
4. Improper use of farm manure can cause root burning. The application of high-quality agricultural fertilizer in the greenhouse is the basis of high-quality and high-yield vegetables, and it is also the most effective measure to prevent and alleviate the obstacles to continuous cropping of soil in the greenhouse. However, the application of unripe agricultural manure, or the application of large amounts of agricultural manure into the land, or the deep application of agricultural manure, or the excessive application of agricultural fertilizer, will cause high temperatures around the root system or the soil solution concentration is too high during the decomposition, and forcefully remove the roots from the plant. Obtain water to burn the main root, which affects the development of the root system and causes wilting.
2. Preventive measures
Regarding how to solve the problem of too deep colonization, field management techniques can be improved, and some small tools are used to dig around the seedlings to expose the stems buried in the soil. Appropriately increase soil permeability to avoid rotten stalks and cause dead trees.
3. In order to effectively solve the problem of "fat damage", the following four points must be noted:
1. Fully rotten. Farmhouse manure must be fully decomposed and other harmless treatments before entering the greenhouse. It is strictly forbidden to enter the shed into the greenhouse. Humidity, sealing and tipping should be shut down during heap rot, so as to kill germs, eggs and grass seeds, and reduce pest damage.
2. Thump and screen. The decomposed agricultural manure should be thrashed and sieved, otherwise it will cause burns to the new roots just planted after planting. The lighter ones will affect the development and tend to cause "little old seedlings".
3. Deep application. After spreading the fertilizer, it must be turned over and mixed well.
4. Fertilize in an appropriate amount. The amount of agricultural fertilizer is not better, the excessive application is also prone to burn root problems.
Disclaimer: Some articles of this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for processing. phone
Collagen is the most abundant protein in mammals, accounting for 25% to 30% of the total protein. It is widely present in all tissues from the body surface of lower vertebrates to mammalian bodies. Collagen monomers are long cylindrical proteins with a length of about 280 nm and a diameter of 1.4–1.5 nm. It consists of 3 polypeptide chains that are supercoiled around each other.
Collagen,Collagen Peptides,Collagen costco,Collagen Peptide Products
YT(Xi'an) Biochem Co., Ltd. , https://www.ytlinkherb.com