具有随机平台的作物投入响应函数

Crop Input Response Functions with Stochastic Plateaus

American Journal of Agricultural Economics · 2008
被引 99
人大 AABS 3

中文导读

提出一种估计具有随机平台的响应函数的方法,该函数能捕捉田块和年份的随机效应,并用于确定小麦氮肥的经济最优施用量。

Abstract

Abstract Agronomic research on crop response to nitrogen fertilizer suggests that a plateau function may be appropriate, but the plateau varies across fields and years. Available models that treat the plateau as a stochastic variable are not readily extendable to handle field or year random effects as seems to be appropriate based on the agronomic data. This article develops a method of estimating a response function with a stochastic plateau that can capture random effects. The method is then used to determine economically optimal levels of nitrogen fertilizer for wheat ( Triticum aestivum ).

作物响应函数随机平台氮肥经济最优施氮量