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调查了1998—2010年加拿大新不伦瑞克省西北部267个小区土豆产量,利用随机生产函数模型研究7种水土保持措施与田间管理措施、土豆品种、试验条件、农业技术及气象因子对土豆平均产量和产量变化的影响,各项水土保持措施相互作用共同影响土豆产量。春翻和梯田与土豆平均产量呈正相关,排水、使用凿式犁与土豆平均产量呈负相关,平整土地对土豆平均产量没有影响。水土保持措施是提高土壤肥力和土豆平均产量的有效措施。本研究结果不具有绝对的指导意义,还要根据具体情况和实践经验加以分析认证。
Potato yield of 267 plots in northwestern New Brunswick, Canada from 1998 to 2010 was investigated. Seven soil and water conservation measures and field management measures, potato varieties, test conditions, agricultural techniques and meteorological factors were used to study potato yield The average yield and output changes, the interaction of various measures of soil and water conservation affect potato production together. Spring and terraces and potato average yield was positively correlated, drainage, the use of chisel plow and potato average yield was negatively correlated, the formation of flat land has no effect on the average yield of potatoes. Soil and water conservation measures are effective measures to increase soil fertility and potato average yield. The results of this study do not have absolute guiding significance, but also according to the specific circumstances and practical experience to be analyzed and certified.