Sawbo: 從苦楝樹種子提煉天然殺蟲劑 （在國語来自台湾）
-
- 6 years ago
- 9278 Views
-
ReportNeed to report the video?Sign in to report inappropriate content..
You can download this video here: https://sawbo-animations.org/video.php?video=//www.youtube.com/embed/V0… Naturally occurring insecticidal compounds can be extracted from neem seeds and sprayed onto crops to prevent pest insect damage. This 2 minute and 33 second animation explains how to sort neem fruits, dry them, remove their outer shells, sort the seeds, grind them, mix the powder in water, filter the mixture, and then prepare the solution necessary for spraying on the crops.
Login or Signup to post comments