Main soil nutrient status and its effect on fruit quality of grape protected cultivation in the coastal land of Zhejiang
To find out the main soil nutrient status and its effects on the fruit quality of grape protected cultivation in coastal land, the current status of soil nutrients, pH value and the changes fore-and-aft film mulching, as well as its correlation with fruit quality were studied in 13 vineyards of Wenling city. The results showed that the soils of the 13 vineyards were mainly weakly alkaline, with pH value ranging from 6.6 to 8.2. The organic matter, salinity and alkali-hydrolyzable nitrogen were 22.05 g/kg, 0.8 g/kg and 122.23 mg/kg in general, while available phosphorus and available potassium richly reached 108.52 mg/kg and 753.38 mg/kg. After film mulching, the level of soil nutrients such as organic matter, nitrogen, phosphorus and potassium were slightly different, but 69.2 percent of soils were more acidic with a 85.6 percent promotion in soil salinity. The fruit weight was significant positively correlated with pH value, but negatively correlated with organic matter and available phosphorus. In addition, the other soil elements hadn't significant correlation with fruit quality. The studies suggested that the soil nutrient status in these vineyards were suitable for grapevine growth on the whole, whereas an obvious soil acidification and salinization problem appeared after film mulching, which could affect fruit quality. So scientific and rational fertilization were required for soil improvement.
国家科技期刊平台
NSTL
万方数据
维普
