摘要
以冬小麦生长条件为标准,筛选了12个因素,对陕西省17个自然生态区的冬小麦生产进行了模糊综合评价。结合大量的肥效试验结果,进行了小麦生产的Logestic增长分析。结果表明,小麦生产的最大潜势为6840±600kg/hm^2。各自然生态区合理施肥条件下的小麦产量,陕北为1200±600kg/hm^2,关中灌区为4680±600kg/hm^2。经济效益分析表明,陕北坡旱地冬小麦施化肥生产呈负效益;水分条件较好的关中灌区和陕南盆地,施化肥效益在2.0元/元以上;渭北旱原区施化肥效益在1.5～1.8元/元之间。
In this paper, 12 factors were selected to carry out the Fuzzy comprehensive evaluation of winter wheat production potential in 17 natural ecological areas of Shaanxi province based on the growth conditions of winter wheat. In combination with a large number of fertilizer efficiency experiments,the logistic growth analysis of wheat production was made. The results showed that the greatest potential of winter wheat yield was about 6 840±600 kg/hm2 and in the case of ratio rational fartilization in each natural ecological region,winter wheat yield in North Shaanxi can be 1 200 + 600 kg/ hm2,and that in the irrigated area of Guanzhong Plain 4680± 600kg/hm2. Also,the analysis of its economic efficiency showed that there was a negative correlation between winter wheat economic efficency and fertilizer application in the slope farmland in north Shaanxi. In the case of better moisture conditions like Guanzhong Irrigation Area and basin area in South Shaanxi,the econimic efficiency of rational application of fertilizer is over 2.0yuan/yuan but on the Weibei Rainfed Highland area is 1. 5~1. 8 yuan/yuan.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
1993年第S1期113-117,共5页
Journal of Northwest A&F University(Natural Science Edition)
关键词
模糊评价
增长曲线
增长分析
生产力
Fuzzy evaluation,growth curve,growth analysis,production potential
