条件筛选
-
How effective are neem seed extract and neem oil as insecticides?
Have you heard of neem plant insecticide? This is an insecticide made from insecticidal compounds extracted from a plant. The development and use of neem plant insecticide seems to have become a worldwide trend. In Thailand, I saw that some places already use neem as street trees, and flower markets everywhere
-
Agricultural water crisis remains unsolved, and a comprehensive plan is still lacking
Groundwater over-extracted for many years has left the North China Plain, one of China's main grain-producing regions, facing a water shortage crisis. On one hand, there is an increasingly scarce and precious water source; on the other hand, there is the real pressure of safeguarding the Chinese people's "grain bag" security. As a major water consumer, how should agriculture