利用归一化植被指数评价酿酒葡萄生长状况的研究

Study on Evaluation of Grapevine Intra-plot Vegetative Vigour by Normalized Difference Vegetation Index

以生长势不同的酿酒葡萄品种赤霞珠和梅鹿辄为试材,采用基于地物光谱特性的遥感技术获得地块内不同生长势(包括新梢长度、新梢日生长速度、单株叶面积、NTester指数)小区的归一化植被指数(NDVI)间存在显著差异,并且NDVI与葡萄新梢长度、新梢日生长速度、植株叶面积以及NTester指数间具有显著或极显著的相关性。因此,采用NDVI评价地块内葡萄长势差异性具有应用前景。

Two grape wine making cultivars, Cabernet Sauvignon and Merlot （Vitis vinifera）, were used in this study to estimate vine vegetative vigour by the remote sensing technique. The results show that the normalized difference vegetation index （NDVI） of grapevines based on on-ground object spectral data distinguished well the intra-plot vine vegetative vigour, including shoot length, shoot daily growth rate, leaves areas per vine and N-Tester index. Significant correlations were found between NDVI and shoot length, shoot daily growth rate, leaves areas per vine, or N-Tester index. The results indicate that NDVI could be used for evaluating the grapevine intra-plot vegetative vigour and the GIS distributed NDVI map might be used to distinguish different grapevine vigour zones.