盐碱地、灌溉和种子处理对甜菜林分建立的影响

S. Kaffka, K. Hembree
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引用次数: 23

摘要

甜菜(Beta vulgaris L.)是最耐盐的作物之一,但据报道,在发芽和出苗期耐盐性较差。在圣华金河西部和帝王谷的试验中,研究了在中等盐分条件下(2至10 dS m”)秋季种植的甜菜种子的出苗率。电导率(EC)水平大于6.0 dS m'!在圣华金河谷以石膏为主的土壤中,出苗率和幼苗干重下降,但最终林分数没有下降。播前灌种降低了盐度对出苗率的影响,晚秋时秧苗显著增大。在帝王谷,与平均年龄EC•较低的喷灌处理相比,地表灌溉造成的土壤盐分的短暂增加对幼苗出苗没有影响。吡虫啉提高了帝王谷地区的出苗率和成活率,但对三地没有影响
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Effects of Saline Soil, Irrigation, and Seed Treatments on Sugarbeet Stand Establishment
Sugarbeet (Beta vulgaris L.) is among the most salt tolerant crops, but is reported to be less tolerant during germina­ tion and emergence. In trials in the western San Joaquin VaHey and the Imperial Valley, The emergence of fall­ planted sugarbeet seeds under a range of moderately saline conditions (2 to 10 dS m") was studied. At electrical con­ ductivity (EC.) levels greater than 6.0 dS m'! in a gypsum dominated soil in the San Joaquin Valley, rates of emer­ gence and seedling dry weight were reduced, but not final stand counts. Priming seed before sowing reduced the effects of salinity on emergence rates and resulted in sig­ nificantly larger seedlings in late fall. In the Imperial Valley, transient increases in soil salinity created by surface irrigation practices did not affect seedling emergence com­ pared to sprinkler irrigation treatments with lower aver­ age EC•. Imidicloprid increased seedling emergence and survival in the Imperial Valley but had no effect in the San
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