Crop Stalk Turns to Be Environmentally FriendlyThe world's headache of dealing with crop stalks has been tackled by a Chinese researcher in east China's Shandong Province.Crop stalks are now being transformed, using a especially made "reactor," into carbon dioxygen which helps red grapes in the fruit gardens conduct photosynthesis at Kongcun Town in Pingyin County, Shandong. The transforming system was invented by Zhang Shiming, a Shandong technological worker who had carried out scientific study over the past 15 years. In the pilot field, carbon dioxygen density is 54.3 percent higher and photosynthesis efficiency 354 percent higher than in the contrast field. About 1,900 kilograms of fruits are yielded per mu (0.07 hectare) in the experimental field, or more than five times higher than in the ordinary orchard, according to survey results by scientists from Zhengzhou Fruit Tree Research Institute under the Chinese Academy of Sciences. Crop stalks are one of major recyclable resources on the earth, and how to make use of it is a worldwide problem. Over 90 million tons of crop stalks are produced per year in Shandong, and only 20 percent is well utilized. During the harvest season, local farmers usually burn the stalks, which results in producing smog in a heavily polluted environment and even poses a threat to nearby traffic safety. The transforming system gives a thorough solution to the problem, experts said. It has been used to cultivate cucumber, watermelon and capsicums. |
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