Sampling Techniques for Measuring and Forecasting Crop Yields.

摘要

This manual assembles information on mathematical modeling concerning crop yields for domestic and foreign users of crop statistics. In providing technical assistance to countries in the collection of agricultural data,measuring crop yields is important for decisions affecting imports and exports,as well as recommending ways of improving crop techniques. Major emphasis is placed on forecasting of current-year yield per acre prior to harvest. This publication could serve as a basis for training courses as well as a reference manual for countries developing or modifying agricultural data systems. It is important to emphasize,however,that this manual is not expected to serve as a training module without an instructor or consultant experienced in crop sampling and yield modeling.