當前位置：CN范文網>作文大全>話題作文>植物作文>自己動手修剪植物英語作文

自己動手修剪植物英語作文

時間：2021-01-17 15:16:39 植物作文

自己動手修剪植物英語作文

　　This is the VOA Special English Agriculture Report.

自己動手修剪植物英語作文

　　Pruning makes no sense. You cut off parts of a plant. Yet the plant is supposed to grow back even better than before? This demands an answer.

　　The explanation begins with the apical bud. This bud is at the end of the actively growing tip of the plant.

　　Apical buds produce a growth hormone called auxin. The buds release this hormone down the plant stem. When the top of the main shoot is removed -- by pruning or breakage -- the auxin is no long produced.

　　This causes buds to the side, called lateral buds, to wake up and start growing. The result: better plant development.

　　Pruning can also remove unhealthy or unneeded parts of a plant, and increase the growth of flowers and fruit.

　　Generally, the best time to prune is in late winter, before spring growth starts. But gardening experts at the University of Florida extension point out some exceptions.

　　For example, spring-blooming plants like spireas and azaleas should be pruned after they bloom. Then pinch the new shoots between your thumb and forefinger. That will help them develop branches that produce new blooms.

　　Plant expert Doug Welsh says when you prune a rosebush, crape myrtle or shade tree, first remove dead, broken or diseased parts. Cut at the place where the problem begins. "Deadhead," or take off, dead blooms.

　　Remove any branches that touch another branch; leave the stronger one or the one that is in a better position. Remove any branches growing in the same space as the branches next to them. Also prune branches growing toward the ground, high branches growing straight up and shoots growing from the base of the tree.

　　But Doug Welsh, a professor at Texas A&M University, says not to go too far with pruning. He says a lot of it can be avoided just by choosing the right plant for the right space. "People can ruin what nature has created," he says.

　　Melissa Snyder, a master gardener in Manatee County, Florida, says pruning wounds a plant. People do not need to put anything on the wound, she says. But they do need to be careful not to wound themselves with chainsaws or other pruning tools.

　　Also, tools can spread disease from one plant to another. So be sure to disinfect tools with alcohol or bleach after each plant.

　　And that's the VOA Special English Agriculture Report, written by Jerilyn Watson. Next week, learn about new scientific understanding of how pruning works. And for more gardening advice, go to 51voa.com. I'm Steve Ember.

　　這里是VOA特別英語農業報道。

　　修剪是沒有意義的。你剪掉植株的一部分，然而，植株會長的比以前更加茂盛。這需要一個答案。

　　解釋要從頂芽開始。頂芽位于植株活躍的生長點末端。

　　頂芽分泌出叫做生長素的生長類激素。頂芽將生長素釋放至植株莖部。當主芽的頂端被修剪或受到損壞時，將不能再分泌生長素。

　　這將導致側芽蘇醒并開始生長。結果是，植株生長的更加茂盛。

　　修剪還可以移除植株不健康或不必要的部分，促進花朵或果實的生長。

　　總體來說，修剪植株的最佳時間是在冬末，植株開始生長之前。但是佛羅里達推廣大學的園藝專家指出，也有一些植物例外。

　　例如，像繡線菊和杜鵑花這樣春天開花的植物，應該在開花之后進行修剪。然后掐掉長度在拇指和食指之間的新芽。這可以幫助催生新的枝干，開出更多的花。

　　植物學專家Doug Welsh表示，修剪玫瑰叢，桃金娘或者能遮蔭的'數木時，應該首先剪掉枯死，斷裂或患病的部分，從出現問題的地方開始修剪。除掉枯死的花朵。

　　剪掉所有與其他枝干相接觸的樹枝，留下比較強壯或者位置更好的一個。剪掉所有與鄰近枝條在同樣的空間生長的樹枝。剪掉向地面生長的樹枝，直直向上生長的樹枝和從樹木底部生長出來的枝條。

　　但是得克薩斯A&M大學的Doug Welsh說，不要過度修剪。他說，選擇正確的植株，種植在正確的地方可以避免許多修剪工作。“人們會毀掉自然界創造的東西。”他說。

　　佛羅里達Manatee郡的主要園藝師Melissa Snyder說，修剪會使植株受傷。人們不需要在傷口放置任何物質。但是，需要注意，不要使鋸條或其他修剪工具傷到自己。