Urea is the solid nitrogen fertilizer with the highest nitrogen content. It is not only suitable for the base fertilizer of various crops, but also one of the best fertilizers for top dressing. However, using urea as top dressing is the most taboo to apply water immediately after top dressing. As ---MORE---
Mr. Liang from Shijiazhuang City, Hebei Province, asked him where biogas is popularized. Many households use biogas residue. Why are some effective, some not effective, and some seedlings are hurt? Why is this? A: Biogas residue is the residue of biogas fermentation, and its nutrient content is r ---MORE---
Scientific name: Pelargonium hortorum English name: Fish Pelargoium Alias: Hydrangea, Laihong Section name: Cerebrocladaceae Morphological characteristics: plant height 30CM-60CM, the whole plant was fine hair and glandular hair, with odor. Stem fleshy. Leaves alternate, round to kidney-shaped ---MORE---
The deciduous trees of Taxodium var. chinensis, which are more resistant to water and humidity, are not easy to age, have a beautiful tree shape, grow rapidly, have strong wind resistance, and have few pests and diseases, are suitable for use along rivers and beaches, as well as on both sides of h ---MORE---
Hydroponic culture frees the flowers from the pests and diseases of the soil, but it still suffers from environmental pests and diseases. The fungi, bacteria, and viruses in the air can still be immersed in the stems and leaves of water-cultivated flowers, causing them to undergo varying degrees o ---MORE---
The weather in autumn is changeable, and pig farms should strengthen management. The author made several suggestions for the management of autumn farms for reference. 1. It is not suitable to construct and reform pig farms. In the fall, the temperature is reduced, the time and intensity of sunlig ---MORE---
Release date: 2009-09-21 Researchers at Purdue University are currently developing a new application for laser technology that uses lasers to make arterial stents and more durable medical implants. It is reported that this method can speed up the production speed by 10 times and can also be low ---MORE---