Comparison of yield components and quality factors of sweet corn under different irrigation scheduling strategies

Abstract

Rising energy costs, declining groundwater supplies, increasing competition for water resources between agricultural, industrial and domestic users and irrigation-induced water quality problems are providing considerable impetus to improving efficiency in irrigated agriculture. Much of the groundwater used for irrigation is found in closed underground basins. Water percolation is the only source of water available for recharge. In some basins, the pumping rate is much greater than the recharge from percolation and ‘water mining’ occurs. The aim of this study was to compare the yield components and quality factors of sweet corn grown under different irrigation scheduling strategies. The treatment with 426 mm of seasonal irrigation offered the largest commercial yields, with an appropriate quality production, good irrigation efficiency, the highest gross margin and the best break-even point irrigation strategy. Treatments with higher application produced lower irrigation efficiencies.

MCDM-based multidimensional approach for selection of optimal groundwater pumping systems: Design and case example

“…With the relevant integration of renewable energy sources (RES) into most of the sector, renewables currently represent an energy transition opportunity in agriculture [1]. Considerable efforts are being made to improve the efficiency of irrigated agriculture [2], where current commercially available water pumps mostly run on electricity or diesel-powered equipment [3]. Among the different solutions, solar photovoltaic (PV) water pumping systems can be used efficiently for water pumping in agriculture [4].…”

Key factors affecting the spatial variation of summer maize yield in Henan Province, China

“…、 土壤 [5][6] 、 气候 [7][8][9][10][11][12][13] 、 品种 [14][15][16] 、 灌溉 [17][18] 等某一种因素对作物产 量的影响， 如鲁艳红等 [1] 通过长期定位肥料试验和 盆栽试验结果， 发现氮磷钾肥或氮磷钾肥配施稻草 均能提高双季稻产量； 檀满枝等 [5] 应用模糊 C 均值 算法， 在河南省封丘案例区证明了土壤剖面质地构 型对小麦产量的显著影响； 戴彤等 [13] http://www.resci.net 的交互作用， 但涉及的因素通常不超过 2 个 [19][20][21][22][23][24] 。例 如 Sun 等 [19] 的研究表明， 气候变化和管理措施这两 类因素对华北平原夏玉米产量产生影响， 通过优化 播种日期和改善种植密度等适应措施， 能有效降低 由气候变化导致的夏玉米产量波动； Iizumi 等 [20] 系 统分析和评估了 1980-2006 年气候变化对美国玉 米种植区作物产量的影响， 结果发现气候变化引起 玉米减产， 但将玉米播种期适当提前可有效消除该 减产现象； 康利允等 [24] 对比分析了不同施磷和灌溉 处理下的冬小麦产量， 发现在土壤水分供应不足 时， 磷肥深施有助于作物根系的生长发育， 从而提 高作物对土壤水分、 养分的吸收利用能力， 有助于 形成高产。 此外， 也有学者对作物产量的多种影响因素 [25][26][27][28][29] 进行了有益探讨， 如 Tamene 等 [25] [34] ， 但是相关研究 [35][36][37] http://www.resci.net http://www.resci.net 这得到了在研究区实施的其他相关研究结果的支 持 [44,45] 。另外， 相关研究表明 [46,47] http://www.resci.cn…”