摘要
计算产量预测法是生产单位常用的预测种子产量方法。根据分析 ,这种方法预测精度可大于 70 % ,生产中可以应用。但这种方法和其他预测方法相比 ,不是最优的种子产量预测方法。
The method of using the weightof a thousand seeds and the rate of seeds available in a pinecone to calculate seed yield of Pinus tabulaeformis is a general method in practice.It was found that the accuracy of this method is more than 70 % ,which can be used in practical production.Compared to other methods,this one shows disadvantages of lower accuracy and complicated procedure.Other methods for forecasting seed yield should be selected in prac- tice.
出处
《西北林学院学报》
CSCD
北大核心
1997年第A12期115-118,共4页
Journal of Northwest Forestry University
基金
林业部"八五"科技重点攻关项目!"中国主要造林树种开花结实规律及种子产量预测报的研究"部分内容
关键词
种子
产量
计算
预测预报
油松
estimation of seed yield
forecasting of seed yield
Pinus tabulaeformis
