Just after the Spring Festival holiday, in the soil and fertilizer laboratory of the Dehui Agricultural Technology Extension Center, the technicians put on white coats and got busy in an orderly manner, registering, sampling, testing, and recording ......They went back and forth between the various instruments, working in a tense and orderly manner.
Technicians from the Soil and Fertilizer Laboratory of Dehui Agricultural Technology Extension Center are conducting soil testing.
Since November last year, we have been testing soil samples from 18 townships (towns) in the city, and at present, in order to prepare for spring ploughing, new organic fertilizer samples have also been sent one after another, and the testing is also being carried out uninterruptedly. Xu Hongqing, chief of the fertilizer section of the Dehui Agricultural Technology Extension Center, said.
Soil samples from 18 townships (towns) in Dehui City.
Why the rush to soil testing? It turned out to be to ensure that the "fertilizer card" was delivered to farmers in time before spring plowing this year. "After the analysis and sorting of soil sample data in the early stage, the technicians will print the 'fertilizer card' through the soil testing formula fertilization system, and then distribute it to the farmers by the relevant personnel of the agricultural department of the township agricultural comprehensive service center to guide the upcoming agricultural production. In addition, farmers can also rely on the online platform to query relevant data information. Xu Hongqing said.
The "fertilization card" is based on the soil test results, combined with the climatic conditions, fertilization habits, target yield and other factors in different regions, to determine and issue the soil testing formula fertilization nutrient supplement plan and fertilization operation instructions.
With the 'Fertilizer Card', the fertilization can be done accurately. For example, if the results of soil sample testing show that it is necessary to pay attention to 'potassium reduction and nitrogen extraction', then whether it is to buy fertilizer or fertilization, it is necessary to pay attention to the relevant proportion. Crops with low nitrogen will grow slowly, so they need to supplement urea more, and add an extra bag to the normal amount. If potassium is high, the amount of chemical fertilizer should be reduced, and organic matter should be supplemented, and the straw should be crushed and buried deep in the soil to improve the soil structure. According to the test results, fertilization will definitely achieve high yield and high yield this year. Yang Shoushuo, a large grain grower in Dehui City, said.
It turns out that this is one of the "good skills" of black soil protection measures - soil testing and formula fertilization. Based on soil testing and fertilizer field tests, according to the law of crop demand for soil nutrients, the ability of soil nutrients and the fertilizer effect, on the basis of rational application of organic fertilizer, a set of fertilization technology system of nitrogen, phosphorus, potassium and trace elements is proposed, application period and application method. That is, the crop will make up for what elements it lacks, and make up for what it lacks.
It is understood that the Dehui Agricultural Technology Extension Center tests at least 2,000 soil samples every year, provides free soil testing and formula fertilization testing data for more than 40,000 farmers, and promotes soil testing and formula fertilization area of more than 60 million mu per year. The center has also continuously updated its equipment, improved its testing capabilities, and successively introduced 6 sets (sets) of equipment such as automatic Kjeldahl nitrogen determination instrument to provide accurate detection data for soil samples such as the city's cultivated land quality evaluation and high-standard farmland demonstration area, so as to provide guarantee for agricultural cost saving and efficiency increase and farmers' income.
Xu Hongqing said that based on the test data, farmers can accurately purchase agricultural products according to their actual needs through agricultural technology experts' "pulse prescription" for the soil. The rational combination of various fertilizers not only saves money but also effectively solves the problems of blind fertilization and excessive fertilization in agricultural production of some farmers, and further realizes agricultural efficiency and farmers' income.
*:Changchun**.
Editor: Liu Suna.
Editor-in-charge: Chen Sixiu.
Proofreading: Wang Gengyue.
Producer: Xie Xiaohui.