Food supply · 食物供应
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| food supply/fuːd səˈplaɪ/ | 食物供应 | shí wù gōng yìng |
| fertilisers/ˈfɜːtəlaɪzəz/ | 化肥 | huà féi |
| pesticides/ˈpestɪsaɪdz/ | 农药 | nóng yào |
| herbicides/ˈhɜːbɪsaɪdz/ | 除草剂 | chú cǎo jì |
| intensive farming/ɪnˈtensɪv ˈfɑːmɪŋ/ | 集约农业 | jí yuē nóng yè |
Feeding a growing world
- The human population keeps growing, and all those people need food.
- Increasing food supply 食物供应 uses science — but it has costs as well as benefits.
养活一个增长的世界
- 人类种群持续增长,所有那些人都需要食物。
- 增加食物供应使用科学——但它有代价也有好处。
Food supply pressure lab · 食物供应压力实验室
Follow how demand, farming and waste affect food supply. · 跟踪需求、农业和浪费如何影响食物供应。
Fertilisers increase crop yields by: · 化肥通过______提高作物产量：
Fertilisers supply nutrients like nitrates. · 化肥提供硝酸盐等养分。
Which increase food supply? (Select all that apply.) · 哪些措施增加了食物供应？（选择所有适用项。）
Removing nutrients would reduce yields. · 移除养分会降低产量。
Ways to increase food supply
- Fertilisers 化肥 add nutrients; machinery works land faster; pesticides 农药 kill pests.
- Selective breeding and glasshouses raise yields further.
Deforestation lowers biodiversity, washes away soil, causes flooding and adds CO2
增加食物供应的方法
- 肥料(fertilisers)添加营养素;机械更快地耕作土地;杀虫剂(pesticides)杀死害虫。
- 选择育种和温室进一步提高产量。
砍伐森林降低生物多样性,冲走土壤,引起洪水并增加 CO2
A drawback of pesticides is that they can: · 杀虫剂的一个缺点是它们可能会：
Pesticides can damage non-target species. · 杀虫剂可能损害非目标物种。
Chemicals that kill weeds competing with crops are called . · 杀死与作物竞争杂草的化学物质称为。
Herbicides remove competing weeds. · 除草剂清除竞争性杂草。
Pesticides and their problems
- Pesticides protect crops but can harm helpful insects and build up in food chains.
- Herbicides 除草剂 kill weeds that compete with crops.
Ways farmers increase food production
杀虫剂和它们的问题
- 杀虫剂保护作物,但能伤害有益的昆虫并在食物链中积累。
- 除草剂(herbicides)杀死与作物竞争的杂草。
Overusing fertilisers can pollute rivers. · 过量使用化肥会污染河流。
Fertiliser run-off causes eutrophication. · 化肥流失会导致富营养化。
Intensive farming 集约农业: pros and cons
- Pros: much more food per area, lower prices.
- Cons: pollution from fertilisers, loss of habitats, and animal-welfare concerns.
More food can mean more pollution. Fertilisers boost yields but, washed into rivers, cause eutrophication. Higher food supply must be balanced against environmental harm.
集约农业:利与弊
- 利:每单位面积多得多的食物,更低的价格。
- 弊:来自肥料的污染、栖息地的丧失,以及动物福利问题。
更多食物可能意味着更多污染。 肥料提高产量,但冲进河流时,引起富营养化。更高的食物供应必须与环境危害平衡。
You've got it
- food supply is raised by fertilisers, machinery, pesticides, selective breeding, glasshouses
- pesticides protect crops but can harm helpful species and build up in food chains
- intensive farming gives more food but causes pollution and habitat loss
你掌握了
- 食物供应由肥料、机械、杀虫剂、选择育种、温室提高
- 杀虫剂保护作物,但能伤害有益的物种并在食物链中积累
- 集约农业给出更多食物,但引起污染和栖息地丧失