Fertilizer used for acidizing soil
A fertilizer and soil technology, applied in the direction of fertilizer mixture, application, fertilization device, etc., can solve the problems of soil acidification, reduce plant absorption of phosphorus, reduce soil water permeability, etc., and achieve the effect of improving buffer and pH value
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Embodiment 1
[0035] Choose the peanut field with soil acidification, the pH value of the base soil (soil layer depth 0-20cm) of the test field is 5.0, the field plots are randomly arranged, repeated 4 times, and the area of each plot is 100m 2 .
[0036] Before sowing peanuts in arable land, apply fertilizers consisting of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer, wherein the nitrogen fertilizer chooses calcium nitrate with a mass percentage of N of 12%, and the phosphorus fertilizer chooses P 2 o 5 The mass percentage content is 15% calcium magnesium phosphate fertilizer, potassium fertilizer selection K 2 The mass percent content of O is 4% silicon-calcium-potassium fertilizer;
[0037] The application rate of fertilizer is: N is 6kg / mu, P 2 o 5 6kg / mu, K 2 O is 6kg / mu; before application, mix the required weight of nitrogen, phosphorus and potassium fertilizers and then spread them all at once, plow after spreading, and sow after raining or watering;
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Embodiment 2
[0041] Every 4 apple trees is a treatment plot, repeated 4 times, randomly arranged, the area of the plot is 80m2 .
[0042] The apple orchard application that soil pH value is 5.2 (soil layer depth 0-40cm) is made up of nitrogen fertilizer, phosphorus fertilizer and potash fertilizer, wherein, nitrogen fertilizer selects the calcium nitrate that the mass percent of N is 12%, and phosphorus fertilizer selects P 2 o 5 The mass percentage content is 15% calcium magnesium phosphate fertilizer, potassium fertilizer selection K 2 The mass percent content of O is 4% silicon-calcium-potassium fertilizer;
[0043] The fertilizer application rate is: N is 1.7kg / 100kg apple, P 2 o 5 1.7kg / 100kg apple, K 2 O is 1.7kg / 100kg apple.
[0044] The apple yield per mu can refer to the average yield of apples in the previous three years. The apple yield in the first three years of this test plot is 2200kg / mu. Calculate the annual application of nitrogen, phosphorus and potassium fertilize...
Embodiment 3
[0055] Select a winter wheat field with soil acidification, the pH value of the base soil (soil layer depth 0-20cm) of the test field is 5.3, the field plots are randomly arranged, 4 repetitions, and the area of each plot is 100m 2 .
[0056] Fertilizers consisting of nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer are applied twice before winter wheat sowing and at the turning green stage, wherein the nitrogen fertilizer chooses calcium nitrate with a mass percentage of N of 12%, and the phosphorus fertilizer chooses P 2 o 5 The mass percentage content is 15% calcium magnesium phosphate fertilizer, potassium fertilizer selection K 2 The mass percent content of O is 4% silicon-calcium-potassium fertilizer.
[0057] The fertilizer application rate is: N is 9kg / mu, P 2 o 5 9kg / mu, K 2 O is 9kg / mu;
[0058] The method of fertilization is: mix 40% of the required weight of nitrogen fertilizer before sowing, all the phosphorus fertilizer and potassium fe...
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