In the “Agricultural Survey†questionnaire, Li Liangting, Nantaqiu Village, Zhanggezhuang Town, Pingdu City, reflected that when he removed the small shed in Jiangdi County this year, he discovered red and green substances on the surface of the soil, and then changed to a covered species. However, similar phenomenon occurs when the film is poured. Because of concerns about the growth of crops, he wrote a letter asking what the red and green matter was and had no effect on the crops.
For this reason, on September 17th, the reporter went to the Chengguan Subdistrict Office and Dianzi Town in the main producing area of ​​Pingdu City to investigate. Due to continuous rainfall, the reporter did not find red and green material on the surface of the soil. However, according to Liu Xuejun, a dealer of agricultural materials in Chengguan Town, and Li Fuchun, a farmer in Lijiazhai Village, Dianzi Town, the problem is very common in the local area, but The impact of the output is not great.
Li Liangting reflected that he used 10 bags of compound fertilizer per mu, plus 6 bags of organic fertilizer, and the problematic plot had been growing ginger for 8 consecutive years.
Is this soil problem related to fertilization habits? The reporter interviewed Zhao Weijie, an expert on soil and fertilizer at the Soil Fertilizer Station of the Bureau of Agriculture in Pingdu City. Zhao Weijie believes that this phenomenon is due to the use of excessive fertilizer caused by mild soil salinization. He said: "Because farmers use fertilizers in large quantities, the nutrients in the soil are too high, and soil salinity accumulates on the surface. Under certain conditions of temperature and humidity, microorganisms will also collect on the surface. Red is an algae, green is a Moss species will, in the long run, lead to soil consolidation and increase soil salinization."
How should farmers solve the similar situation? In view of the soil conditions in Nantaqiu Village, Zhao Weijie opened the data sheet for Pingdu City Soil Testing Formula. The table shows that the phosphorus content is relatively high, so the village can reduce the amount of phosphorus during fertilization. To solve the mild soil salinization, Zhao Weijie gave two suggestions. The first is to reduce the amount of chemical fertilizers used. The local ginger production area should use 4 to 5 bags of fertilizer per acre, and it should focus on multiple fertilizers. The second is to increase the organic fertilizer, improve the soil, the bags of organic fertilizer and soil fertilizer on the market can be, in addition, the return of straw also helps solve this soil problem.
According to Liu Jianwei, director of the Soil Fertility Station of the Pingdu City Bureau of Agriculture, in order to facilitate complaints and reports from farmers and access to information services for “agriculture, rural areas and farmersâ€, Qingdao has opened a unified national hotline for agricultural system public service 12316. Qingdao farmers have agricultural technology. Questions can be telephoned.
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