内生菌拟茎点霉B3促进大田水稻增产的初步研究

植物内生菌拟茎点霉（Phomopsis）是广谱内生菌，在多种植物体内都有发现。笔者曾在重阳木中分离出多株拟茎点霉属内生菌，并对其中1株B3菌株进行研究，发现该菌可以帮助水稻抗病，促进其苗期生长。对水稻整个生育期进行盆栽研究表明，该菌可以促进水稻增产，提高水稻抗病性。同时，该菌可以分泌漆酶，促进水稻秸秆降解。此外，该菌对水稻生长环境中的菲降解也有促进作用。

The Effects of Increasing Production of Endophytes Phomopsis B3 on Rice

After insufflating extended endophytes phomopsis B3 ferment diluent on seedling bed of rice,the effect of microbial inoculum on rice growth was studied.The investigation result of seedlings before transplanting seedling showed that leaf age,the number of green leaves,the number of tiller of individual plant and the weight of per 100 fresh plants in microbial inoculum treatment group increased 0.11,0.12,0.03 and 2.6 g respectively compared with those of control group.20 days after transplanting,increased tiller number in microbial inoculum treatment group was 55 500 hm2 more than that in control group.30 days after transplanting,tiller number in microbial inoculum treatment group was 42 000 hm2 more than that in control group.In harvest season,the yield,weight of 1 000 grain and seed-setting rate increased 300 kg/hm2,0.7 g and 0.23% respectively compared with these in control group.The result of preliminary study demonstrated that microbial inoculum confected by endophyles phomopsis B3 could increase the number of strong seedling and yield.