In recent years, Keyouqian Banner of Xing'an League, Inner Mongolia, has attached great importance to the comprehensive utilization of crop straw, actively promoted the feed, fertilizer and base material utilization of straw, and explored a green development path of "feed utilization, commercial production, and industrialized management" of straw. With the continuous expansion of the industrial scale and the continuous improvement of the technical level, the small straw has really been turned into a big industry.

Walking into the animal central kitchen in the Alidur Modern Grass Industry Processing and Logistics Trading Park in Keyouqian Banner, the roar of machines, the sound of equipment running and the busy voice of workers were intertwined. After several workers took turns to operate, the previously inconspicuous straw became high-quality feed after the processes of dust removal, disinfection, ripening and wall breaking, TMR mixing, etc. Through the integration of 52 sets of mechanical equipment and the use of advanced science and patent technology in each section, the Animal Central Kitchen has achieved a daily production capacity of 50 tons of fully mixed forage grass, filling the gap in the deep processing of high-quality forage grass in Keyouqian Banner. Liu Xiaoyong, the operation director of the park, said, "The forage application of straw in the grass industry park can reach more than 100000 tons every year. The straw products after primary processing and deep processing have good palatability, high nutritional value and an absorption rate of more than 95%."

Come to Zhang Xiaojun's mushroom planting shed in Yonghe Village, Dashizhai Town, Keyouqian Banner. Zhang Xiaojun is making mushroom sticks. After the process of raw material crushing, mixed fermentation, bagging, etc., the newly made mushroom sticks are stacked neatly, and the smell of plant fermentation wafts from time to time in the air. Wood chips have always been used as the main raw material to produce edible fungus sticks, and the cost of raw material procurement is relatively high. Because straw contains rich nutrients, which can provide energy for the growth of pleurotus ostreatus, Zhang Xiaojun changed the formula and added straw, corncob and other cellulose rich raw materials, which significantly increased the mushroom yield of the rod. "The family farm consumes more than 200 tons of corn straw every year. The fungus stick made of corn straw has good water retention effect, high mushroom production rate and good quality, and the cost of fungus bags has also been reduced." Zhang Xiaojun, head of Dashizhai Xiaojun Family Farm, said.

The small straw connects the green and low-carbon development of agriculture at one end and the revitalization of rural ecology at the other end. In Liushuchuan Village, Keerqin Town, Keyouqian Banner, unlike the past, waste straws can be seen everywhere, but now the village vacant land is stacked with organic fertilizer mixed with straws. In order to fully ferment the organic fertilizer, Jiang Kun, a villager, is driving a dumper. With the slow progress of the dumper, straw and livestock manure are fully mixed, which promotes the fermentation and decomposition of organic materials. He said that cow dung and straw were mixed to make farm manure, which not only improved soil fertility, but also increased grain production and solved the problem of straw treatment.

According to Liu Baolin, head of the Soil Fertilizer and Water Saving Unit of the Agriculture and Animal Husbandry Science and Technology Development Center of Keyouqian Banner, Keyouqian Banner vigorously promotes new technologies such as straw returning to the field and circular agriculture. At the same time, it takes the favorable opportunity of spring ploughing to organize agricultural technology experts to promote farmyard manure in the field, and guide farmers to apply fertilizer scientifically, use waste straw efficiently and rationally to turn waste into treasure, Finally, the "double harvest" of agricultural ecological benefits and economic benefits will be realized.

From "burning it" to "turning grass into gold". Through years of unremitting efforts, at present, the comprehensive utilization rate of straw in Keyouqian Banner is more than 90%. The discarded straw in the past has become a "green lever" for the economic development of Keyouqian Banner, and a "win-win road" for the comprehensive utilization of straw has been created. (Yu Jianmeng, Chen Feng)