Physiological performance, bromatological quality, and productivity of sweet potato using calcium oxide particle film

Abstract: The objective of this work was to evaluate the effect of the application of calcium oxide (CaO) particle film on the physiological performance, bromatological quality, and productivity of sweet potato (Ipomoea batatas). The experimental design was randomized complete blocks with three treatments (5, 10, and 15% CaO particle film concentrations) and a control (water), with three replicates, applied 30 days after planting. The following parameters were evaluated: physiological, including net photosynthetic rate and Falker chlorophyll index (FCI); bromatological, i.e., crude protein, neutral detergent fiber (NDF), acid detergent fiber (ADF), total digestible nutrients (TDN), dry matter digestibility (DMD), and total carbohydrates; and productivity. The use of the 10 and 15% CaO particle film increased sweet potato photosynthesis, FCI, crude protein content, and tuber and aerial part productivity. At those concentrations, the lowest NDF and ADF contents and the highest TDN and DMD contents were also observed. The use of the CaO particle film at the concentration of 10 and 15% improves the physiological, productivity, and bromatological parameters of the sweet potato crop.

摘要：本研究旨在评估氧化钙（calcium oxide, CaO）颗粒膜施用对甘薯（Ipomoea batatas）生理性能、营养品质（bromatological quality）及产量的影响。试验采用完全随机区组设计，设置3个处理组（氧化钙颗粒膜浓度分别为5%、10%、15%）与1个对照组（喷施清水），每组设置3次重复，于种植后30天施用。本次试验评估的指标包括：生理指标，涵盖净光合速率与法尔克叶绿素指数（Falker chlorophyll index, FCI）；营养品质指标，即粗蛋白、中性洗涤纤维（neutral detergent fiber, NDF）、酸性洗涤纤维（acid detergent fiber, ADF）、总可消化养分（total digestible nutrients, TDN）、干物质消化率（dry matter digestibility, DMD）及总碳水化合物；以及产量指标。结果表明，施用10%与15%浓度的氧化钙颗粒膜可提升甘薯的净光合速率、法尔克叶绿素指数、粗蛋白含量，以及块根与地上部分的产量；在该浓度条件下，同时可观测到最低的中性洗涤纤维与酸性洗涤纤维含量，以及最高的总可消化养分与干物质消化率。综上，施用10%与15%浓度的氧化钙颗粒膜，可改善甘薯作物的生理性能、产量及营养品质相关指标。