Does Zhongshan cedar have another name Introduction to Zhongshan cedar

Introduction of Zhongshan Cedar:

It is a plant of the genus Taxus in the family Cunningaceae. It is a general term for the interspecific hybridization of excellent clones of Taxus spp. The trunk is straight, the shape of the tree is beautiful, and the leaves are green for a long time.

It is an excellent interspecific hybrid of three tree species of Taxus sinensis, which is native to North America, and is an excellent interspecific hybrid of three tree species, namely Taxus chinensis, Cunninghamia pond and Taxus mexicana, which is bred by the Institute of Botany, Chinese Academy of Sciences in Jiangsu Province after many years of experimental research. The trunk is straight, the tree shape is beautiful, the leaves are green for a long time, resistant to salt and alkali, water and moisture, strong wind resistance, few pests and diseases, and fast growth.

It is a plant of the genus Taxus in the family Cunningaceae. It is a general term for the interspecific hybridization of excellent clones of Taxus spp. The trunk is straight, the shape of the tree is beautiful, and the leaves are green for a long time.

The main differences between Zhongshan cedar and Metasequoia metasequoia are that the subject classification, morphological characteristics, and habitat distribution are different, as follows:

1. The classification of subjects is different.

1. Zhongshan cedar.

Pine fir order, Taxidae, Taxus spp., Taxus spp., Taxus spp., Taxus mexicana, Taxus mexicana.

2. Metasequoia. Pinus cedar, fir family, metasequoia genus, metasequoia species.

Second, the morphological characteristics are different.

1. Zhongshan cedar.

The bark is long and flaky, brown; Shoots spread horizontally; The canopy is predominantly conical and umbel-ovate. The leaves are strip-shaped and accommodating each other, with smaller leaves. The male and female cones are sporophyllous bulbs, homogeneous; The cones are round or ovate, with short peduncles and drooping downward.

The seeds are irregular triangular or polygonal with thick cortex. The flowering period is late April, and the cones ripen in October.

2. Metasequoia. The twigs are opposite, drooping. Leaves linear, alternately opposite, pseudo-two rows into pinnate compound leaves, cones drooping, nearly quadrangular spherical or rectangular-spherical, green before maturity, dark brown when ripe, scales apex flattened rhomboid, **with a transverse groove, base wedge-shaped, seeds flattened, obovate, occasionally rounded or rectangular, wings around, apex concave, primary leaves striped, crossed opposites, stomatal lines below.

The flowering period is late February, and the cones ripen in November.

3. Different habitat distribution.

1. Zhongshan cedar.

It is mainly found in Jiangsu, Zhejiang, Yunnan and Chongqing in China. Resistant to moisture, corrosion and salinity. It is suitable for the middle and lower reaches of the Yangtze River and its southern areas in the plain wetlands and coastal flats.

2. Metasequoia. It is distributed in the local areas of Lichuan, Shizhu and Longshan counties at the junction of Hubei, Chongqing and Hunan provinces, and is mostly found in valleys or near the foothills of the mountains, where the terrain is gentle, the soil layer is deep, moist or slightly waterlogged, and the vertical distribution is generally 750 1500 meters above sea level.

The above content refers to Encyclopedia - Zhongshan Cedar.

Encyclopedia - Metasequoia.

Cunninghamia sinensis, a plant of the genus Cunninghamia in the family Cunatae, is a general term for the interspecific hybrid excellent clone varieties of Taxus spp. The trunk of Zhongshan fir tree is straight, the tree shape is beautiful, the leaves are green and the potato search period is long, the salt and alkali resistance, the water resistance is fast and wet, the wind resistance is strong, the pests and diseases are few, the growth rate is fast, it can be planted in most areas of our mu hand country, it is a commonly used tree species in landscaping, and it is also an important wood species. Detail.

1. Different families and genera: Zhongshan fir is a genus of Fir in the family Fir family, and Metasequoia is a genus of Metasequoia in the family Fir family; 2. The flowering period is different: Zhongshan fir flowers in late April every year, and metasequoia blooms in late February every year; 3. The fruiting period is different

The fruit ripens in October every year, and the metasequoia fruit ripens in November every year; 4. Different DBH: the DBH of Zhongshan cedar can reach 2 meters, and the DBH of Metasequoia metasequoia can reach 1 meter.

About Nakayama cedarIt is a tree of the family Cunningaceae, with a DBH of up to 2 meters. The bark is long strips of slag with hollow shedding, brown; Shoots spread horizontally; The canopy is predominantly conical and umbel-ovate. The leaves are strip-shaped and accommodating each other, with smaller leaves. The male and female cones are sporophyllous bulbs, homogeneous; The cones are round or ovate, with short peduncles, and drooping toward the blind.

The seeds are irregular triangular or polygonal with thick cortex.

About MetasequoiaMetasequoia: Gymnosperm fir family. Deciduous tree, twigs opposite, drooping.

The leaves are linear, alternately opposite, pseudo-two rows into pinnate compound leaves, cm long, with 4-8 stomatal lines on both sides below. Monoecious. cones drooping, nearly spherical, slightly 4-edged, centimeter long, with long stalks; Seed scales woody, shield-shaped, each scale with 5-9 seeds, flattened seeds, surrounded by narrow wings.

1. Different families and genera: Zhongshan fir is a plant of the genus Taxus lanceolata, and Metasequoia is a plant of the genus Metasequoia. 2. Morphological differences:

The branches of Metasequoia metasequoia grow horizontally, and the branches of Metasequoia grow drooping. 3. Different flowering periods: Zhongshan fir blooms in late April, and metasequoia blooms in late February.

4. Value difference: Metasequoia is mostly used to meet the greening of tidal flats, and Metasequoia is a building material.

1. The families and genera are different

Zhongshan fir is a semi-evergreen tree, a deciduous fir plant, the overall tree shape is beautiful, ornamental, the branches are tough, and will not be easily broken, and metasequoia is a metasequoia plant, which is a national first-class protected plant.

2. Morphological differences:

The bark of Metasequoia is long and flaky, sometimes the bark will fall off, the bark color is brown, the crown is conical or umbel-oval, and the branches belong to the horizontal growth state, while the bark of Metasequoia is gray or dark gray, the branches are drooping, and the crown is spire-shaped.

3. The flowering period is different

It usually blooms in late April every year, and the cones ripen around October in the fall, while Metasequoia blooms in late February and blooms earlier, and the cones ripen in November and are nearly quadrangular or rectangular spherical.

4. Value difference

The trunk of Zhongshan fir tree is straight, the tree shape is beautiful, the ornamental value is high, and it is mostly used to meet the greening along the beach, while the heartwood of metasequoia is maroon-red, the texture is lighter, and the texture is straight, and it is usually used as a building material.

Zhongshan fir expert, professional lupus fir planting base Hunan Yixi Flower Garden Co., Ltd., Hunan Yixi Flower Garden Co., Ltd. is a collection of seedling breeding, planting and sales as one of the professional greening enterprises, located in the outstanding people, the folk customs of the simple Hunan Yiyang Datong Lake, Nanxian County to hilly landform, forestry resources are very rich, Nanxian seedlings are also one of the pillar industries of Hunan Yiyang. Through years of development, the current cultivated seedling species are: metasequoia, pond fir, lupus fir, Zhongshan fir, willow, poplar, weeping willow and other green seedlings.

Yixi seedlings: quality, quantity, reputation, sincerely for all customers to provide better service, wholeheartedly welcome all greening units, professional households, new and old customers, colleagues to visit Hunan, see the sample order.

<> auction. In our common auctions, the ** price of an item is often from low to high, but some places will also use another way, the auction price is from high to low, so do you know why they do this?

To understand this, we need to understand what it means to have a consumer surplus.

Let's say you have a commemorative stamp right now, and because you're not a stamp lover, you're going to sell it, and one way to sell it is to hold an auction.

There are now four philatelic enthusiasts present at the auction: Zhang San, Li Si, Wang Wu, and Zhao Liu.

Their willingness to pay is:

Buyer's willingness to pay (RMB).

Zhang San 100 Li Si 80

Wang 5 70 Zhao 60

Willingness to pay: The buyer is willing to pay the most for a certain item.

In order to sell your commemorative stamps, you start with a low **, such as 30 yuan. When the price is called to 80 yuan (or a little higher), Li.

Fourth, the king. Fifth, Zhao Liu was reluctant to pay a higher **, at this time Zhang San 80 yuan to get this stamp.

In a sense, Zhang San made a good deal, he was willing to pay 100 yuan for this stamp, but now he only paid 80 yuan. In this regard, we said that Zhang San obtained a consumer surplus of 20 yuan.

Consumer surplus is the amount that a buyer is willing to pay for an item minus what he actually pays for it.

In the previous example, Zhang San received a consumer surplus of 20 yuan, while the other three did not receive a consumer surplus because they did not get the stamps and did not spend a penny.

Now let's modify the above situation, if you have two stamps, then when Zhang San and Li Si shouted 70 yuan (or a little higher), Wang Wu and Zhao Liu gave up, then Zhang San and Li Si spent 70 yuan to get the stamps, then Zhang San's consumer surplus is 30 yuan, and Li Si also got 10 yuan consumer surplus.

The total consumer surplus increases, but the benefits you receive decrease. With this in mind, let's now look at another auction method, ** from high to low:

You now start bidding from 200 yuan, and when it is reduced to 100 yuan, Zhang San is willing to pay 100 yuan, the transaction is established, Zhang San does not get the consumer surplus, and you get more benefits. That's why many places use this method of auctioning.

This is the case when the auction item is unique and ideal, and the reality is often much more complex.

Reading Chapter 7 of Principles of Economics (Micro).