论文部分内容阅读
一、化肥是国家重要的农业资源 化肥是农作物的粮食,在农业生产中起着重要的作用。我们根据建国30年以来有关资料计算结果,我国标准化肥(按含N 21％、P_20_5 18％、K_2O 25％计,下同)的施用量与粮食总产量的相关系数(R)=0.95;与棉花总产量的相关系数(R)=0.64。化肥中各有效成分总销售量与粮食总产量的相关系数(R),氮是0.94,P_2O_5是0.95,K_2O是0.74。 最近,我们又对近几年来《全国化肥试验网》3000多个田间试验结果进行了统计,结果表明,在其它农业技术措施共同作用下,化肥和有机肥料配合施用,平均每斤氮磷钾有效成分平均可增产粮食9.3斤,其中每斤N增产10.0斤,每斤P_2O_5增产9.8斤。每斤K_2O增产4.4斤。由此可见,化肥不但是我国国民经济建设的物质基础,也是国家进行重大决策研究的重要依据之一。
First, the fertilizer is an important national agricultural resources Fertilizer is the food crops, in agricultural production plays an important role. According to the data from the 30 years since the founding of our country, the correlation coefficient (R) between the application rates of China’s standard fertilizers (including N 21%, P_2O_5 18% and K_2O 25%, the same below) and total grain output is 0.95; Correlation coefficient (R) for total cotton production = 0.64. The correlation coefficient (R) between total sales volume of active ingredients and total grain output in fertilizer was 0.94 for nitrogen, 0.95 for P2O5 and 0.74 for K2O. Recently, we have also conducted statistics on more than 3,000 field trial results of the “National Fertilizer Experimental Network” in recent years. The results show that with the combined application of other agricultural technologies and measures, the combined application of chemical fertilizers and organic fertilizers has achieved an average of effective NPK An average of 9.3 kg of grain can be increased grain yield, which increased yield of 10.0 pounds per kilogram of N, P kg per kg increase of 9.8 pounds of P_2O_5. Kg K_2O yield 4.4 kg. Thus it can be seen that chemical fertilizers are not only the material basis for China’s national economic construction, but also one of the important bases on which the state conducts major policy-making studies.