菌肥及其与氮磷配施对水稻生产及分配的影响

为探讨菌根菌肥单施及其与化肥配施对水稻产量的影响,测定不同施肥方式下水稻光合速率,分析水稻物质分配比例及产量构成因子．结果表明:菌根菌肥单施增大库容的同时改善了光合作用,水稻增产2927％．菌根菌肥与氮肥配施提高了水稻光合速率,加大了籽实的物质分配比例,水稻增产4137％．菌根菌肥与磷肥配施及其与磷肥氮肥配施两种条件下,光合作用显著改善,稻草产量增加,水稻实际产量增幅小．菌根菌肥单施及其与氮肥配施都能有效提高水稻产量,而与磷肥配施及与氮肥磷肥二者配施的促产条件有待进一步探讨．

Effects of mycorrhiza alone with or without nitrogen and phosphate on rice dry matter production and distribution

With different fertilization,the photosynthetic rate of rice was measured,then the distribution and yield components were analyzed to investigate the influences of single mycorrhizal fertilizer and the mycorrhizal fertilizer mixed chemical fertilizer on rice yield.The results showed that: 1) The usage of single mycorrhizal fertilizer increased the storage capacity and the photosynthetic rate of rice,making rice yield increase by 29.27%,while there was no difference in distribution of dry matters.2) The photosynthetic rate of rice was improved by the mycorrhizal nitrogen fertilizer,moreover,the proportion of dry matter to the rice seeds raised,and rice yield increased by 41.37%.3) The photosynthetic rate of rice was enhanced by the mycorrhizal phosphate fertilizer and the mycorrhizal nitrogen and phosphate fertilizer;there was no difference in distribution of rice dry matter;the rice yield increased by 19.10% and 17.48%,respectively.The usage of single mycorrhizal fertilizer and the mycorrhizal nitrogen fertilizer can effectively improve the rice yield,but it needs further research to touch the effectiveness of the other fertilizer-modes.