多功能水稻无土育苗营养基质的研究

Studies on Multifunctional Growing Media without Soil for Raising Rice Seedling

通过大棚育苗进行基质原料的选择和无机营养成分配比试验,以明确多功能水稻无土育苗营养基质的最佳配方。结果表明:原料选择50%稻壳+10%牛粪+20%褐煤粉+20%膨润土混合,并加入3%比例为N∶P2O5∶K2O=6∶2∶2无机养分的基质育苗效果最佳,秧苗根系发达、白根多、抗性强,秧苗素质高,育苗方便、无需除草。

In the experiment of rice seedling-raising in the plastic greenhouse, materials were selected and ratio of inorganic nutrients defined to find the best formula of the growing media without soil. The results showed that the best material ratio was 50% rice husk ＋ 10% cow dung ＋ 20% brown coal powder ＋ 20% bentonite. The best ratio of inorganic r/utrients is N：P2O5：K2O=6：2：2. The best formula is mixed the materials with 3% nutrients. The root system of rice seedling is well developed. Seedlings have large quantity of white root and strong resistance. High quality seedling was raised easily without weeding using this media.