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0引言水稻是喜硅作物,秸秆中通常含有10%左右的硅。每生产1000kg稻谷,水稻地上部分吸收的SiO2量达130kg,超过水稻吸收氮磷钾养分总和[1]。土壤中含有大量的硅,但其有效性很低,多以难溶状态存在。叶喷式水稻硅肥是黑龙江省农业科学院土壤肥料与环境资源研究所研制的一种新型肥料,它含有20%以上可被植物吸收利用的速效SiO2,既含有无机营养成分,又含有有机和矿质营养成分。因此,使用该肥料不但
0 Introduction Rice is a hi-silicon crop, which typically contains about 10% silicon. For each 1000 kg of rice produced, the amount of SiO2 absorbed by the above-ground part of the rice reached 130 kg, which exceeded the sum of nutrients absorbed by rice in NPK [1]. Soil contains a lot of silicon, but its effectiveness is very low, mostly in the presence of insoluble state. Leaf spraying rice silicon fertilizer is Heilongjiang Academy of Agricultural Sciences Institute of Soil Fertilizer and Environmental Resources developed a new type of fertilizer, which contains more than 20% of available plant absorption and utilization of fast-acting SiO2, both inorganic nutrients, but also contains organic and mineral nutrient content. Therefore, the use of the fertilizer not only