欧亚国际

Dualex便携式智能气象-叶绿素-花青素-黄酮醇测量仪

摘要 

在以泥炭为基质的容器中“无土”栽培蓝莓（Vaccinium corymbosum L.）可以克服土壤不适宜的问题，从而促进这种作物在新地区的推广。由于泥炭的使用带来了几个关键的环境和经济可持续性问题，因此需要对替代解决方案进行评估。因此，我们测试了用葡萄酒链中的固体消化物和残渣制成的堆肥替代部分泥炭的效果。杜克品种的微繁殖植株生长在三种基质中，包括商业泥炭与三种堆肥组分（10、20、40%）的混合物，并与生长在100%未施肥或施肥泥炭中的植株（每盆0.3克Osmocote）进行比较。在试验结束时，五篇论文中的株高没有显著差异，而由于次生芽的发育更大，每株的总节数高于对照论文中的节数。在生长季节，用Dualex监测的植物营养状况在创新基质中与单独使用泥炭相比通常没有显著差异。在仲夏，在有堆肥的基质中生长的植株表现出最佳的氮平衡指数（NBI值）。在试验结束时，使用中高比例堆肥（20–40%）栽培的植物表现出较低的落叶程度，这取决于植物活动的缓慢下降。对生物量的鲜重和干重及其在根和芽之间分配的最终破坏性测量证实，堆肥的使用不会对生物量的生产产生负面影响，而是在堆肥比例最高（20–40%）的论文中，刺激了根系发育。 

关键词：堆肥；蓝莓；副产品；智慧农业；可持续性 

Composted Solid Digestate and Vineyard Winter Prunings Partially Replace Peat in Growing Substrates for Micropropagated Highbush Blueberry in the Nursery 

Abstract

The “soilless” cultivation of blueberry (Vaccinium corymbosum L.) in containers with peat as substrate allows overcoming the problem of unsuitable soils, thus enhancing the spread of this crop in new areas. Since the use of peat presents several critical environmental and economic sustainability issues, the evalsuation of alternative solutions is required. The effectiveness of compost produced with solid digestate and residues from the vine-wine chain to replace part of the peat was therefore tested. Micropropagated plants of cultivar Duke grown in three substrates consisting of a mixture of commercial peat with three compost fractions (10, 20, 40%) were compared with plants grown in 100% unfertilized or fertilized peat (0.3 g of Osmocote per pot). Plant height did not significantly differ between the five theses at the end of the trial, whereas the total number of nodes per plant was higher than in the control theses, due to a greater development of secondary shoots. The nutritional status of the plants, monitored with Dualex, during the growing season, was generally not significantly different in the innovative substrates compared to peat alone. In mid-summer the plants grown in substrates with compost showed the best nitrogen balance index (NBI values). Plants cultivated with medium-high percentages of compost (20–40%) showed a lower degree of defoliation at the end of the trial, dependent on a slower decline of vegetative activity. The final destructive measures of fresh and dry weight of biomass and of its partitioning between roots and shoots highlight that the use of compost did not negatively affect the production of biomass, but rather, in the theses with the highest percentages of compost (20–40%), root development was stimulated. 

Keywords: compost; Vaccinium corymbosum; by-products; smart agriculture; sustainability

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