Detection of heavy metal elements such as arsenic, mercury, lead, cadmium, iron and zinc in…
1 site selection
Choose a land with a convenient transportation, no pollution sour…
The harvest period of the nuclear-free yellow skin is in the middle and late July, and how…
A: It is feasible, timely scraping old skin and burning it in a concentrated way is a good…
Walnut trees generally take cold-proof measures from mid-November to early December.
<…
A: The vines are buried in the cold and generally start half a month before the soil is frozen…
The cabbage field should be based on the re-application of nitrogen fertilizer. The use of…