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肥料是粮食的“粮食”。粮食要丰产丰收,就像人一样要吃“五谷杂粮”才能健康,营养才能全面。然而,从近年来我国肥料品种结构调整来看,高浓度肥料已占主导地位,一说到氮肥就是尿素,一说到磷肥就是二铵。从1990年到2004年的15年间,高浓度磷复肥(总养分≥40%)产量从14．54万吨 P_2O_5攀升到 549．1万吨 P_2O_5,占磷肥总产量的54．0%,年平均递增速度到27．4%。而低浓度磷肥(过磷酸钙和钙镁磷肥, 含P_2O_512-18%)在磷肥总产量中的比重从96．5%下降到46．0%,其中钙镁磷肥从97．53万吨 P_2O_5减少到约50万吨 P_2O_5,减幅达50%。为此,有关业内人士认为,给庄稼施高浓度磷复肥如15-15-15、16-16— 16、17-17-17等属于给庄稼吃精米、白面。钙镁磷肥这一低浓度磷肥除了含磷外,还提供了有效性钙、镁、硅,就好像在作物的精米、白面中加了麦麸、胚芽,使作物营养更全面,作物生长得更健康。
Fertilizer is the food “food.” Good harvest of grain yield, just like people like to eat “whole grains” to health, nutrition can be comprehensive. However, in recent years, the structural adjustment of China’s fertilizer varieties point of view, high-concentration fertilizer has dominated, when it comes to nitrogen fertilizer is urea, when it comes to phosphate fertilizer is diammonium. During the 15 years between 1990 and 2004, the output of high-concentration phosphate compound fertilizer (total nutrients ≥40%) climbed from 145,200 tons of P 2 O 5 to 5,491,000 tons of P 2 O 5, accounting for 54.0% of the total output of phosphate fertilizers The average rate of increase to 27.4%. However, the proportion of low concentration phosphate fertilizer (superphosphate and calcium magnesium phosphate, including P_2O_512-18%) decreased from 96.5% to 46.0% of the total phosphorus production, among which, the content of calcium magnesium phosphate decreased from 975,300 tons P_2O_5 To about 500,000 tons P_2O_5, a decrease of 50%. To this end, the industry believes that high concentrations of fertilizer facilities such as Shi Shi 15-15-15, 16-16-16, 17-17-17 belong to the crop to eat polished rice, flour. In addition to phosphorus, calcium and magnesium phosphate fertilizer, in addition to phosphorus, also provides the availability of calcium, magnesium and silicon as if it were added to rice and germ in polished rice and white flour, resulting in more complete crop nutrition and more crop growth health.