农民已经发现，最便宜的杀虫剂是一条花带。

当你在作物田中种植野花，不仅在边缘，而且在中间穿插成条带状时，你就能让瓢虫、草蛉、食蚜蝇和寄生蜂在田间定居，而不是只是来访。

它们全年免费吃掉蚜虫、毛虫和螨虫。

在对照试验中，带有定制花带的田地，叶甲虫数量降低了40%到50%，作物损害减少了大约60%，足以降到不需要考虑喷药的阈值以下。

这些花朵为我们的田地吸引了一支常备军。

我们花了几十年时间研发化学药剂来杀死吃作物的昆虫，而那些吃这些昆虫的昆虫本可以用种子价格就为我们效力。

Farmers have figured out that the cheapest pesticide is a strip of flowers.

When you plant wildflowers through a crop field, not just around the edge but in strips running through the middle, you get ladybugs, lacewings, hoverflies, and parasitic wasps living in the field instead of visiting it.

They eat the aphids, the caterpillars, and the mites for free, all summer long.

In controlled trials, fields with tailored flower strips had leaf-beetle numbers 40 to 50% lower and crop damage cut by around 60%, enough to drop below the threshold where spraying was even considered worth it.

The flowers attract a standing army to our fields.

We spent decades engineering chemicals to kill the insects eating the crop, when the insects that eat those insects would have worked for the price of seed. @giveashitnature