不同基质对水稻育苗的影响

利用不同配比基质培育优良健壮的水稻苗，具有重要意义。该研究采用了蛭石、珍珠岩、泥炭和蚯蚓粪4 种原料，按照不同比例混合后培育水稻。先对不同基质的理化性质进行分析，然后对水稻秧苗的生长效果进行比较，最终找到最佳配比方案。结果表明：国产泥炭:沙=2:1 和蚯蚓粪:国产泥炭:沙=2:1:1 混合基质，均适宜水稻育苗的生长。综合对比发现，水稻喜弱酸性环境，在国产泥炭上育苗长势较好。蚯蚓粪能有效增加基质养分含量，但过多会提高基质的pH值，不利于水稻生长。因此，控制蚯蚓粪加入量可以部分替代泥炭，提供水稻生长所需。

Effect of Different Media on Rice Seedling Growth

It is of great significance to cultivate good and strong rice seedlings using different proportions of media. The authors used four raw materials, vermiculite, perlite, peat and wormcast, and mixed them together according to different proportions for breeding rice seedling. First of all, the different physical and chemical properties of the growing media were analyzed, then their effects on rice seedling growth were compared, finally the best ratio was determined. The results showed that the mixed growing media of domestic peat: sand =2:1 and wormcast: domestic peat: sand =2:1:1 were suitable for the growth of rice seedling. Comprehensive comparison found that weak acid environment was favorable to rice growth, and the rice seedlings grew well in domestic peat. Wormcast could effectively increase the nutrient content, but too much of it would increase the pH value of the growing medium, which was adverse to rice growth. The control of the wormcast amount could replace part of peat to meet the requirement of rice growth.