BUENOS AIRES Nike Air Max 2018 Sale Clearance , March 22 (Xinhua) -- Argentina coach Gerardo Martino tried out a team without forward Gonzalo Higuain in a training session on Tuesday ahead of Thursday's match against Chile in the 2018 Russia World Cup South American qualifying tournament.
Now with a full squad, Martino set up a practice match where Barcelona striker Lionel Messi was accompanied by Manchester City forward Sergio Aguero and Paris Saint-Germain midfielder Angel Di Maria on his team.
Later on Tuesday Nike Air Max 2017 Sale Clearance , Martino announced his starting lineup and despite being a top goalscorer in Italy's first division, Higuain Nike Air Max 90 Sale Clearance , who plays for Napoli, was not included in the starting 11.
Argentina will travel to Chile on Wednesday where they will face the host team for the fifth match in the South American qualifiers.
It will be an opportunity for Argentina to get revenge for losing to Chile at the Copa America 2015.
On March 29 Nike Air Max Sale Clearance , Argentina will then face Bolivia at home in the city of Cordoba.
Argentina are currently in the sixth place on the standings with five points, seven points behind leaders Ecuador.
Roger Federer of Switzerland celebrates after winning the men's singles semifinal match against Karen Khachanov of Russia in the Gerry Weber Open 2017 in Halle Air Max 2018 Sale Clearance , Germany, on June 24 Air Max 2017 Sale Clearance , 2017. (XinhuaJoachim Bywaletz)
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LANZHOU， Nov. 29 (Xinhua) -- En route to Shapotou， there is nothing much to see but sand: endless sand.
Shapotou in northwest China's Ningxia Hui Autonomous Region nestles where the Yellow River meets the Tengger Desert. For more than five decades researchers have been coming here to fight desertification. Li Xinrong is one of them.
"Sands are as precious as forests，" is his mantra. Having been here for three decades， he clearly has a very personal perception of this arid land.
"Deserts are landmarks god has given us. They nurture special biotic resources. We must protect them."
Shapotou came into the public eye in the 1950s with the construction of the Baotou-Lanzhou Railway， an artery that traverses the Tengger Desert six times. The project ran into difficulties in Shapotou's ever shifting sand dunes: hardly an ideal substrate for railway track. That was when the first group of scientists arrived.
When the trains finally began running in 1958， Shapotou had gained worldwide fame as a paradigm of successful sand control， principally the result of the "straw checkerboard" technique.
Checkerboarding requires straw， usually wheat or rice straw， to be laid out in a grid across the desert and partially buried.
The checkerboards have remarkable， though poorly understood， windbreaking properties and help to keep dunes in place， allowing topsoil to form. When a sufficiency of soil is established， drought-resistant plants can be grown. However， a receding water table has led to recent degradation of vegetation and a decline of the fixative effect.
"We can't just sit back and relax. We must become tireless tree planters so that others may rest in the shade，" said Li to his colleagues when he first arrived in Shapotou in 1987.
"Upon our arrival， my colleagues were gnashing their teeth and wringing their hands，" Li recalled. "There was no toilet. There were rat holes all over our dorm. The only way to receive a radio signal was to climb up to the top of the dunes."
So isolated were that they almost starved. "In the end， we survived by eating the seeds of elm trees，" Li said.
One third of China's territory faces the threat of desertification， and almost 400 million people are subject to frequent sandstorms and strong winds. An old saying goes， "People in Gansu eat three jin (1.5 kilograms) of dust every day".
Li's latest weapon in the war against erosion is a microbe which inhabits the soil crust growing from the straw checkerboards. It can lock up the soil， but the crust evolves much too slowly， taking at least five years to grow.
Li's team has extracted similar microbes from alga and moss and cultured them in the lab. When sprayed on the sand， the crust grows much faster， and holds the soil "just like a carpet."
"This biotechnology protects local plants from invasive species. It helps defend the original desert ecosystem，" Li said.
Shapotou now has over 30 kinds of cultivated vegetation， including calligonum， caragana and scoparium. Biodiversity is crucial to combating desertification.
"The oldest vegetation has been here for a little over 60 years， while the youngest was planted ten years ago，" said Zhang Zhishan， deputy chief of the Shapotou research center. "Time has shown that we . Cheap Jerseys From China Cheap Custom Jerseys Cheap NBA Jerseys Cheap Retro Jerseys Cheap New NHL Jerseys Cheap Nike NFL Jerseys Cheap NCAA Basketball Jerseys Cheap New MLB Jerseys Cheap Replica Soccer Jerseys Wholesale Jerseys