基于农户认知的保护性耕作模式产量效应模糊数学分析

为了从产量角度评价不同生态区主体保护性耕作模式,以东北平原、华北平原、成都平原、西北绿洲区不同耕作模式为研究对象.经过专家咨询和相关文献分析,筛选确定7个因素作为保护性耕作影响产量的指标集,通过农户一对一调查,将农户对影响产量因素的认知作为基础数据,运用模糊综合评价方法对不同生态区主体保护性耕作模式进行评价.结果显示:不同生态区得分最高的模式分别为东北平原宽窄行留高茬交替休闲种植模式;华北平原上茬玉米秸秆还田+旋耕播种小麦,下茬小麦秸秆还田+免耕直播玉米模式;西北绿洲留高茬免耕直播模式;成都平原小麦或油菜或马铃薯等免耕+稻草覆盖模式.为选择各地具有产量优势的保护性耕作模式提供参考.

Fuzzy mathematical analysis of conservation tillage effect on yield based on Farmer Cognition

To evaluate effects of main conservation tillage methods on yield in various ecological regions. We analysed farmer cognitions of factors influencing yield under the main conservation tillage methods by interviewing peasant households in the Northeast China plain, North China plain, Chengdu plain and Northwest China oasis. The indexing set was determined from 7 yield parameters based on expert consultation and relevant literature. A comprehensive evaluation of conservation tillage methods in the various ecological regions was done using the fuzzy theory.The highest score of conservation tillage modes were wide and narrow spaced rotation planting that leaves a high stubble in the Northeast China plain, rotary tilled seeding of wheat under the bestrow of corn stalks and no-tillage seeding of corn and other crops under the bestrow of whole wheat stalks in the North China plain, no tillage with return of the high stubble in the Northwest China oasis and no\|tillage seeding of wheat and other crops under the bestrow of whole rice stalks in Chengdu plain.These research data should be a useful guide for the selection of conservation tillage method for optimum yield effect.