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The trial was carried out in Xinhe Village, Zhouyi Township, Sandu County, from May to September 2009. The test site is located at latitude 25b38c50.6d, east longitude 107b54c42.7d, altitude 767m, annual average temperature 16.4e, effective accumulated temperature \10e 4680e, frost-free period 320d, annual rainfall 1420mm. The test field is a big eyed mud field with flat land and uniform fertility, pH 7.2, organic matter 67.20g/kg, total nitrogen 3.58g/kg, alkaline nitrogen 280.00mg/kg, available phosphorus 11.90mg/kg, effective potassium 95.00mg/kg . Former rape. The treatments in the fields were completely the same except that the amount of fertilizer was different. After transplanting, the leaf age, tillering, and each growth period were recorded on schedule. When matured, samples were taken to calculate economic traits and yield. Each cell is singled-and-received, and the actual number of actual plants is recorded as actual revenue. Soil testing and fertilizer applicators were used to measure and analyze the soil nutrients tested to determine the method of fertilization.
The determination of soil nutrients by the soil testing and formula applicator was concluded from the results. If considering from the perspective of economic efficiency, the medium and low fertilizer yields can produce better benefits. The optimum fertilizer application N is 91.50kg/hm2 and the P2O5 is 88.50. Kg/hm2, K2O is 79.20kg/hm2, and rice yield is 8289.90kg/hm2. In this test, the ratio of 1x(N1P2K1)N67.5kg/hm2, P2O5105kg/hm2, and K2O67.5kg/hm2 was the highest. In fertilization, excess fertilization should be controlled on the basis of data on basic soil fertility, target yield, soil nutrient supply, nutrient requirement per unit of crop yield, and fertilizer use efficiency.
The Important Role of Soil Testing and Formula Fertilizer in Rice Fertilization
In recent years, the quality of rice in our country has been continuously improved, and the yield of rice has also been continuously improved. As a major increase in the output of food crops, it requires not only the support of new varieties, but also good planting methods. Good seeding and good cropping methods can fully exploit its production advantages. Soil testing and formulating fertilization according to the law of crop demand fertilizer, soil fertilizer supply, and fertilizer utilization is a current economic, cost-saving and efficiency enhancement, and can fully exert the superior seed production advantages. Quality, high yield, one of the important ways to obtain better economic benefits. For this reason, in the process of rice planting, the application of soil testing and fertilizer application instrument is very important.