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随着农业生产的发展,氮、磷用量不断增加,水稻产量也有大幅度提高,从土壤中带走的硅,使土壤氮、磷、硅比例逐渐失调,已制约水稻产量的进一步提高。而水稻是需硅量最大的农作物,其植株体内含硅量可达15％左右,需硅量是氮、磷、钾三要素之和的两倍;据试验每生产100公斤稻谷约吸收二氧化硅16～20公斤。由此可见重视硅在水稻上的施用十分必要。为此,我们从1989年在龙江县、依安县等地进行了硅酸复合肥用于水稻土的试验,土壤为碳酸盐黑钙土或草甸黑土,pH 值为7,亩施硅酸复合肥25公斤。试验取得明显效果。
With the development of agricultural production, the amount of nitrogen and phosphorus is increasing and the yield of rice is also greatly increased. The silicon removed from the soil makes the proportion of nitrogen, phosphorus and silicon in the soil become imbalanced, which has restricted the further increase of rice yield. Rice is the largest amount of silicon crops, the silicon content of the plant body up to about 15%, the amount of silicon required is the sum of the three elements of nitrogen, phosphorus and potassium twice; according to the test every production of about 100 kg of rice about absorption of dioxide 16 ~ 20 kg of silicon This shows that the importance of silicon in the rice on the application is necessary. To this end, we from 1989 in Longjiang County, Yi’an County and other places were silicic acid compound fertilizer for paddy soil test, the soil is carbonate chernozem or meadow black soil, pH 7, 25 kilograms of acid compound fertilizer Test achieved significant results.