论文部分内容阅读
随着黑龙江垦区甜菜种植面积的逐年扩大,在生产过程中合理的施用化肥,提高单位面积产量,增加经济收益巳成为目前生产的主要课题。九三科研所甜菜研究室于1981年至1982年进行了机械施用化肥——不同施肥部位、不同施肥时期的试验研究。现将试验结果整理如下:
With the expansion of the beet cultivation area in Heilongjiang reclamation area year by year, the rational application of chemical fertilizers in the production process, the improvement of output per unit area and the increase of economic benefits have become the main topics of current production. The Beet Research Laboratory of 93 Institute of Science and Technology conducted a pilot study on the application of chemical fertilizers - different fertilization sites and fertilization periods from 1981 to 1982. The test results are summarized as follows: