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营养缺乏和水分胁迫各自对春小麦的生长发育和产量形成有直接影响。分析了春小麦的植株水分状况、生育期、叶片生长、干物质积累和产量构成等在受到水分胁迫下的变化后,认为在一定水分胁迫条件下增加无机营养,能促使春小麦绝对产量显著增加;生活在营养缺乏条件下的春小麦则能产生一系列适应于干旱环境的性状,遇到水分胁迫时受到的影响相对较小(营养充足条件下水分胁迫使产量下降的比率大于营养缺乏条件下的比率)。据此如何掌握各种不同程度干旱下的施肥技术,既能使作物维持必需的生长量,同时又能抵御一定程度的水分胁迫,是一个值得进一步研究的问题。
Nutrient deficiency and water stress each have a direct impact on the growth and yield formation of spring wheat. After analyzing the changes of water status, growth period, leaf growth, dry matter accumulation and yield composition of spring wheat under water stress, it is considered that the increase of inorganic nutrition under certain water stress can promote the absolute yield of spring wheat significantly increase; Under the condition of nutrient deficiency, spring wheat can produce a series of traits adapted to arid environments, which are relatively less affected by water stress (under water stress, the rate of yield decline is more than that of under nutrient deficiency) . Therefore, how to master various fertilization technologies under different degrees of drought can not only maintain the necessary growth of crops, but also resist a certain degree of water stress, which is a problem worthy of further study.