| 摘要 |
The invention is characterised by the use of natural products which permit the upkeep and safeguard of pines and firs by destroying caterpillars and their eggs. This product is provided in two forms, as paste or as liquid and can be either sprayed on each pine and fir, or poured by aircraft. The characteristic feature of this product is that, being naturally occurring, it promotes the growth and development of pines and firs.
|
