If you’re interested in growing a small food garden at home, hydroponic (水栽法的) gardening provides a way to grow fresh, nutrient-rich food in a quickly-changing world with limited resources.
What is a hydroponic garden?
How does hydroponic gardening work?
Plants need sunlight, water and nutrients to grow.
What plants can grow hydroponically?
A variety of different foods can be grown in a hydroponic garden.
In addition to being able to grow food without soil and in small spaces, hydroponic gardening can contribute to solving social and environmental issues. In regions where people don’t have access to fresh vegetables, a hydroponic garden can be part of the solution. Hydroponic plants can grow 40% to 50% faster and produce 30% more than the plants growing in soil.
A.Typically, plants get nutrients from soil. |
B.What produce can a hydroponic garden offer? |
C.What are the benefits of a hydroponic garden? |
D.A hydroponic garden uses water instead of soil. |
E.Microgreens are among the easiest plants to grow. |
F.You can grow more produce in a shorter amount of time. |
G.You can purchase a ready-to-go hydroponic garden or build your own. |
相似题推荐
【推荐1】How to Survive and Thrive
Here are some tips to help you learn not only to survive, but to thrive (成长) and grow in a chaotic world.
Try to build on strengths rather than focus on limitations.
Realize that few mistakes are disastrous. Did you fail a course?
Getting into a top university — or any university — will not guarantee success. I’ve met people from top universities who have experienced unemployment and even homelessness.
A.Have no idea about your future plan? |
B.Face rejection from a first-choice college? |
C.Life is hard at the moment, but we’re surviving. |
D.Try to experience success in any area of your life. |
E.I’ve met high school drop-outs who became very successful. |
F.Do you spend hours studying models of cars for the last twenty years? |
G.And she made new friends with the “good kids” who were also achievers. |
【推荐2】For someone who enjoys gardening or working outside, gifts for their garden can be very thoughtful and appreciated by the gardener.
High quality garden tools can make excellent garden gift ideas, such as small shovels. These may be designed with flowers or other gardening images on them, or they may be personalized for the gift receiver.
Decorations for the garden are some of the more popular garden gift ideas. Animals, or other small statues are generally a good choice, and look good with most types of garden decor.
A.These can work well in most gardens. |
B.Some garden gift ideas can be functional as well as decorative. |
C.There are many garden gift ideas to be found in stores and online. |
D.In addition, you might choose to make something for the garden. |
E.For smaller gardens, decorative fences may make nice gifts as well. |
F.Consider the design of the garden in advance before buying any gifts for it. |
G.A gardening bag in which to store the tools can also be a great garden gift idea. |
【推荐3】Nowadays it is necessary to be reasonable and flexible enough to avoid conflicts as much as possible and live in peace with others.
1. Don’t get in the center of the conflict.
Sometimes people can get in the center of conflicts because they want to help. Frankly speaking, it is very risky, because it can make you the main figure of the conflict.
2. Be kind.
3. Try to be a peacekeeper.
Peacekeepers tend to cooperate with people without bad emotions which usually lead to arguments and even conflicts. “
4. Walk off.
When the conflict is gathering pace and you can’t manage to keep yourself, you should choose to handle the situation in another way. By all means, try to keep yourself away from stress.
A.The greatest victory is the battle not fought. |
B.Conflicts are unavoidable, so try to accept them. |
C.Weak people usually desire others to offer help and support. |
D.It is helpful to put some distance between yourself and the rival (对手). |
E.Let other people sort out their relationships without your presence. |
F.When someone pushes you to the limit, try to act kindly towards this person. |
G.Arguing can either break your relationship or help you get to know your partner better. |
【推荐1】In many people’s eyes, plants are quiet and passive. They can’t talk. They can’t walk.
Or can they? A new BBC documentary series, The Green Planet, gives us a new look at plants. Released on January 10 on Bilibili, it uncovers the wonderful and dramatic ways that plants behave.
Plants compete against each other to live. Each species has its own ways of defense. In rainforests, different kinds of plants race for sunlight. The forest floor is described as a “battlefield” in the series as only two percent of the sunlight filters (透过) through it.
The series not only lets us wonder at the plant world but pushes us to understand that plants are important. “
A.And they can’t think like us |
B.Plants are the basis of all life, including ourselves |
C.The Green Planet reveals the secret lives of plants |
D.Plants also help each other and even communicate |
E.Some plants like Monstera spread their big leaves to reach light |
F.Filming took three years to complete and took place in 27 countries |
G.If a tomato plant gets a leaf disease, it can tell nearby plants about it |
【推荐2】Common water plant could provide a green energy source. Scientists have figured out how to get large amounts of oil from duckweed, one of nature’s fastest-growing water plants. Transferring such plant oil into biodiesel (生物柴油) for transportation and heating could be a big part of a more sustainable future.
For a new study, researchers genetically engineered duckweed plants to produce seven times more oil per acre than soybeans. John Shanklin, a biochemist says further research could double the engineered duckweed’s oil output in the next few years.
Unlike fossil fuels, which form underground, biofuels can be refreshed faster than they are used. Fuels made from new and used vegetable oils, animal fat and seaweed can have a lower carbon footprint than fossil fuels do, but there has been a recent negative view against them. This is partly because so many crops now go into energy production rather than food; biofuels take up more than 100 million acres of the world’s agricultural land.
Duckweed, common on every continent but Antarctica, is among the world’s most productive plants, and the researchers suggest it could be a game-changing renewable energy source for three key reasons. First, it grows readily in water, so it wouldn’t compete with food crops for agricultural land. Second, duckweed can grow fast in agricultural pollution released into the water. Third, Shanklin and his team found a way to avoid a major biotechnological barrier: For the new study, Shanklin says, the researchers added an oil-producing gene, “turning it on like a light switch”by introducing a particular molecule (分子) only when the plant had finished growing. Shanklin says, “If it replicates (复制) in other species-and there’s no reason to think that it would not — this can solve one of our biggest issues, which is how we can make more oil in more plants without negatively affecting growth.”
To expand production to industrial levels, scientists will need to design and produce large-scale bases for growing engineered plants and obtaining oil — a challenge, Shanklin says, because duckweed is a non-mainstream crop without much existing infrastructure (基础设施).
1. What can people get from duckweed firsthand?A.Plant oil. | B.Stable biodiesel. |
C.Sustainable water. | D.Natural heat. |
A.Options for renewable energy. |
B.Reasons for engineering genes. |
C.The potential of revolutionary energy source. |
D.The approach to avoiding agricultural pollution. |
A.Industrial levels. | B.Unique design. |
C.Academic research. | D.Basic facilities. |
A.Duckweed Power | B.Duckweed Production |
C.Genetic Engineering | D.Genetic Testing |
Stretching along the west coast of North America from northern California to Alaska, the forests found along the Pacific Coast Range are the largest area of temperate (温带的) rainforest in the world. The forests are home to the coast redwood, the world’s tallest tree. Across the region, the forest understory (林下叶层) is wet and heavily vegetated.
Taiheiyo Evergreen Forests
Found in southern Japan, they are temperate rainforests of evergreen broadleaf trees. The forests can receive more than 100 inches of rain every year. The forests are covered by Japanese cedar and Japanese stone oak, while moso bamboo comprise the understory. The extent of the Taiheiyo forests has been reduced due to development and agriculture. Today,17%of the remaining forest is protected by national parks and other reserves.
Atlantic Oakwood Forest
The Atlantic Oakwood Forest covers the wettest parts of the United Kingdom. A species of oak tree (橡树) called sessile oak occupies the landscape. Unlike other temperate forests, these forests tend to have an open understory of grasses. Much of the historical range of the forest has given to agriculture and other development, though that has changed in recent decades.
Valdivian Temperate Rainforest
This forest is found on the west coast of Chile and Argentina, on the wet, western slopes (斜坡) of the Andes mountain range. With the coastline to the west, the peaks of the Andes to the east, and the Atacama Desert to the north, the region supports a number of plant and animal species found nowhere else in the world. Uniquely, the forest is covered by evergreen flowering trees, which are native to Chile and little known outside the region.
1. Which of the four forest areas occupies the most land?A.Pacific Coast Range. | B.Taiheiyo Evergreen Forests. |
C.Atlantic Oakwood Forest. | D.Valdivian Temperate Rainforest. |
A.They have open understory grasses. | B.They’re home to extremely tall trees. |
C.They’re of great historical significance. | D.They used to be affected by agriculture. |
A.Wet climate. | B.Coastal location. |
C.Evergreen flowering trees. | D.Well-protected national parks. |