Colville also determined that blueberries can't self-fertilize, so the grower must make sure the crop can be cross-pollinated.

同时，康维尔谈到蓝莓不能自花传粉，所以种植者必须保证蓝莓可以交叉传粉的条件。

youdao

It is a mechanism that helps prevent self-pollination and is most common among wind-pollinated and unspecialized insect-pollinated flowers, as in figwort.

是一种避免自花授粉的机制，在风媒花和非专性虫媒花中最为普遍，比方说玄参。

youdao

For example, in order to maintain the highest level of genetic purity, distinct varieties of self-pollinated crops such as wheat, rice, soybeans and barley need to be separated by at least 60 feet.

FORBES: Magazine Article