STUDIES ON SHORT-TERM FORECASTING METHODS OF SEED CROPS OF CHINESE FIR (CUNNINGHAMIA LANCEO-LATA (LAMB.) HOOK) IN SHANDOU SEED ORCHARD

Chen Yousheng Fang Shengzuo

Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 1990, Vol. 14 ›› Issue (03) : 1-5.

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Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 1990, Vol. 14 ›› Issue (03) : 1-5. DOI: 10.3969/j.jssn.1000-2006.1990.03.001

STUDIES ON SHORT-TERM FORECASTING METHODS OF SEED CROPS OF CHINESE FIR (CUNNINGHAMIA LANCEO-LATA (LAMB.) HOOK) IN SHANDOU SEED ORCHARD

  • Chen Yousheng Fang Shengzuo
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Abstract

An investigation in Shandou seed orchard in 1988 showed that both the numbers of cones counted from visible crown and from sample trees could be used to forecast the cone crop of Chinese fir three months ahead of collection, which satisfied the rcquirmcnt of short-term prediction. Counting cone numbers from visible crown gave more accurate prediction with less working load than that from sample trees. Along with cone crop prediction, the numbers of filled seeds exposed by slicing cones longitudinally revealed potential seed crop.

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Chen Yousheng Fang Shengzuo. STUDIES ON SHORT-TERM FORECASTING METHODS OF SEED CROPS OF CHINESE FIR (CUNNINGHAMIA LANCEO-LATA (LAMB.) HOOK) IN SHANDOU SEED ORCHARD[J]. Journal of Nanjing Forestry University (Natural Sciences Edition). 1990, 14(03): 1-5 https://doi.org/10.3969/j.jssn.1000-2006.1990.03.001
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