fertilizers and agricultural chemicals meaning in English
化肥和农用化学品
Examples
- Fertilizers and agricultural chemicals
化肥和农用化学品 - This paper chooses the indicators of economy and land quality input which has influence on the output , depending on cd - productive function to establish the function between input and output : y : productive forces of the cultivated land f : input of the fertilizer and agricultural chemical i : input of the irrigation l : input of the labor q : input of the land quality a : the level of average management t : the level of changing management a , b , c , d , f : productive elasticity coefficient the factor of the land quality includes texture , content of the organic matter , degree of the pickled , the structure of the soil
本项研究选择了影响农用地总产出的经济投入指标和土地质量投入指标,借助c - d生产函数,建立土地投入产出的函数关系: y = a ? e ~ ( ft ) ? f ~ a ? i ~ b ? l ~ c ? q ~ dy为以土地总产值表示的土地生产力f为化肥和农药的投入i为灌溉投入,即灌溉所需用的水电费l为劳动力投入(考虑了农业机械投入的修正) q为土地质量投入a为平均管理水平t为变化的管理水平a 、 b 、 c 、 d 、 f分别为各相应生产要素的产出弹性系数其中,土地质量因子包括表土质地( t人有机质含量瞩入盐渍化程度px土体构型p )等。他们之间的关系为: q ( a ; xt a 。