【Earth&Sky】蜜蜂的花_英语听力练习mp3下载-自然-沪江听力酷

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【Earth&Sky】蜜蜂的花

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Small fields planted with wildflowers to feed bees – called "bee pastures" – could be a way to revive declining bee populations, according to USDA entomologist Jim Cane. For the past few years, bees have been dying at an alarming rate. [---1---] Dr. Cane said bee pastures can help. He told us about planting patches of wildflowers in almond orchards.

So we're doing as between the end of bloom on the almonds, in late February, sometime in March, and when they harvest, we're going to [---2---] small patches of these annual wildflowers to feed the blue orchard bees and in that orchard,and thereby [---3---] more reproduction.

Cane explained that the almond tree's blooming period is shorter than the life of the bee. He said planting flowers that bloom before or after the almond trees means more food and energy for the bees to [---4---], and that means more bees.

So we're trying to extend a [---5---] so these females can lay more eggs, produce more progeny and thereby be sustainably managed.

After Cane determined the best wildflowers for the bees, bee populations in his experiments increased five fold.