为了这个贴专门找到了有关种菜的杂志, 用英文直接抄下来吧:(from nz house and garden)
a ring of fresh sawdust placed around newly planted seedling will deter snails and slugs.
a mulch of rice hulls (trademe有时候有卖的) spread over a strawberry patch will keep slugs at bay and ensure clean fruit.
还有一个天然农药的制作方法:
you will need:
75g fresh garlic clives
1/4 cup paraffin oil
glass containers
pure soap or soap flakes
sieve or piece of muslin
step1, crush 75g of fresh garlic cloves,place in a glass container and cover with approximately 1/4 cup of paraffin oil.
step2,dissolve 10g of pure soap or soap flakes in a litre of water. the next step is to add the garlic mixture to the soapy water.
step3,using a sieve or piece of muslin,stain the mixture ensuring no pieces of garlic are in the liquid. store in a glass container.
step4, to make a spray,dilute one part garlic mixture to 40 parts water.shake well and spray affected plants. best spraying time is morning.