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应用自生固氮菌作为细菌肥料,以提高农作物产量,在苏联已经是很成功的经验,正被大量推广和发展。近几年来,我国一些农业科学机关,亦开始进行自生固氮菌的效能试验,证明对棉花、高粱、谷子、苧麻、甜菜、马铃薯等作物都有增产效果。但至今尚很少看到自生固氮菌接种油菜的试验报导。根据苏联和其他国家一些学者的观察和试验:十字花科植物的根部土壤中,很容易发现自生固氮菌的存在;认为自生固氮菌与十字花科植物根部之间的关系是很相适应的。因此,我们想到:如果用自生固气菌接种油菜,可能获得增产的效果,于是在1956年冬季,正式开始了这项试验。兹将试验经过和结果分别报告于下:
The application of autotrophic Azotobacter as a bacterial fertilizer to increase crop yields has been a very successful experience in the Soviet Union and is being widely promoted and developed. In recent years, some agricultural science agencies in our country have also begun to carry out experiments on the performance of autotrophic Azotobacter and have proved that they can increase the yield of crops such as cotton, sorghum, millet, ramie, beet and potato. However, seldom seen experimental reports on autogenous nitrogen-fixing bacteria inoculated on rape. According to the observations and experiments conducted by some scholars in the Soviet Union and other countries, the autotrophic Azotobacter is easily found in the roots of cruciferous plants. The relationship between autotrophic azotobacteria and the roots of crucifer plants is well adapted. Therefore, we think that if the inoculation of Brassica oleracea with autotrophic bacteria may yield an increase, so in the winter of 1956, officially started the experiment. The test results and the results are reported separately in the following: