1975年,美国赖斯发现,粗碎的苜蓿干草有促进番茄、黄瓜、莴苣以及水稻,玉米等作物的生长和产量的作用。以后又进一步从干苜蓿中分离到了生理活性物质卅烷醇。由于卅烷醇在极低的浓度就有很高的活性,刺激许多作物生长并提高其产量,因此引起了各国重视。 本试验的目的是了解卅烷醇对促进花生净光合速率的生理效应,并结合小区产量以了解其对花生产量的影响。 In 1975, Rice of the United States found that the coarsely cut alfalfa hay promotes the growth and yield of crops such as tomatoes, cucumbers, lettuce and rice and maize. Later further from the dry alfalfa isolated physiologically active substance 卅 alkanol. Since alkanols have very high activity at very low concentrations, stimulating many crop growth and increasing their yields, it has drawn the attention of all countries. The purpose of this experiment was to understand the physiological effect of sorbitol on the net photosynthetic rate of peanut, and to study the effects of alkanols on the yield of peanuts in combination with the yield of plots.