摘要
试验结果研究表明 :同一类型的土壤 ,采用不同的施肥方案 ,作物产量和经济效益有所差别 ,在获得最大的经济效益时 ,施肥量最合理 ,化肥成本最低。作物产量及经济效益与土壤参数、有机肥料施用量及施肥方案有关 ,其关系建立的知识库有以下两种 :一是根据土壤参数、前几年水稻产量、有机肥的用量 ,推荐施肥方案、目标产量及预估经济效益而建的 ;二是根据土壤参数、计划产量、推荐施肥方案及预估经济效益而建的。
The results of the experiment show: rice yield and economic benefit vary with treatment of fertilization on the same type of soil. When the best economic benefit is obtained, the fertilization amount is the most reasonable and the cost of chemical fertilizers is the least. Rice yield and economic benefit are related to soil parameters, amount of organic fertilizers and fertilization plan. Two knowledge bases are established according to the relations above, which are ∶1) Fertilization plan, target yield and predicted economic benefit are recommended according to soil parameters, rice yield and fertilization plan in the preceding years. 2) Fertilization plan and predicted economic benefit are recommended according to soil parameters and planned yield.
出处
《江西农业大学学报》
CAS
CSCD
2002年第5期695-701,共7页
Acta Agriculturae Universitatis Jiangxiensis
关键词
水稻
测土施肥
专家系统
知识库
agriculture expert system
knowledge base
rule base
rice
