摘 要：钼是较晚被证实的植物必需元素之一，氨基酸是植物生长发育所必需的重要生命物质。本实验将甘氨酸和钼酸进行螯合，配制成浓度为40mg/L的一种新型络合态钼肥，即甘氨酸钼（Gly- Mo）。以无机钼酸为对照，对三叶一心期的黄瓜幼苗进行叶面喷施，重复处理三个周期后，检测黄瓜幼苗叶片的光合生理指标，以研究Gly- Mo对黄瓜幼苗光合生理影响。结果表明，不同于普通无机钼肥，叶面喷施Gly- Mo对黄瓜幼苗的叶绿素荧光参数、叶绿素含量、光合速率等相关生理指标均有所提高。75843

毕业论文关键字: 络合态钼肥，黄瓜幼苗，叶面喷施，叶绿素荧光参数，叶绿素含量，光合速率

Abstract：Molybdenum, which is an essential trace element for higher plants, was found later。 Amino acid is essential to the growth and development of plants。 In this experiment, glycine and molybdic acid were used to generat for the purpose of the new type complex state molybdenum fertilizer named Glycine- Mo (Gly- Mo) with the concentration of 40 mg/L。 Compared with inorganic molybdenum fertilize, the cucumber seedlings were repeatedly treated by foliage-spraying Gly-Mo for three cycles, and the leaves of them were used to detect its physiological indexes in order to studying the effects of Gly- Mo on the photosynthetic physiology of the cucumber seedlings when they grew into the period of three leaves and one half leaf。 The results indicated that foliage-spraying Gly- Mo could improve the related physiological indexes of cucumber seedlings, including chlorophyll fluorescence, chlorophyll content, photosynthetic rate and so on, compared with traditional inorganic molybdenum fertilize。

Key words：complexing state molybdenum fertilizer, cucumber seedling, foliage spraying,         chlorophyll fluorescence parameters, chlorophyll content, photosynthetic rate

目  录

1  绪论 6

1。1  土壤中的钼 6

1。1。1  土壤中钼的主要来源 6

1。1。2  土壤中钼的存在形态 6

1。1。3  土壤中钼的有效性 6

1。1。4  我国土壤中钼的现 7

1。2  钼与植物的生长发育 7

1。2。1  植物体对钼的吸收 7

1。2。2  植物体内钼的运输 7

1。2。3  钼对植物体的生理功能 8

1。3  氨基酸对植物的生理功能 9

1。4  氨基酸络合态微肥 9

1。4。1  氨基酸络合态微肥的研发及优点 9

1。4。2  氨基酸络合态微肥的发展及现状 10

1。5  植物光合作用的生理指标 10

1。5。1  叶绿素荧光参数 10

1。5。2  叶绿素含量 10

1。5。3  光合速率 11

2  材料与方法 11

2。1  实验材料、用具与试剂 11

2。2  实验方法 11

2。2。1  两种钼肥的配制 11

2。2。2  黄瓜幼苗的培养及处理