抽穗期施氮肥可提高小麦籽粒的全氮含量、总可溶性蛋白质量及游离态氨基酸与游离态赖氨酸量等。
Applying nitrogen fertilizer at heading stage could enhance contents of total nitrogen, total soluble protein, free amino acids and free lysine in wheat grains.
在氮素代谢方面，增施氮肥使小麦旗叶中硝酸还原酶活性增加，旗叶中可溶性蛋白含量降低，可明显延缓小麦叶片的衰老；
Soluble protein in flag leaf, which implies senescence of flag leaf, tented to decline with the increase of nitrogen fertilization.
结果表明 ，小麦旗叶衰老过程中可溶性蛋白质含量、DNA和RNA含量逐渐下降 ，而蛋白酶和核酸酶活性逐渐升高。
The results indicated that the contents of soluble protein, DNA and RNA in flag leaf gradually reduced, but the activities of protease and nuclease gradually raised during senescence.
结果表明 ，小麦旗叶衰老过程中可溶性蛋白质含量、DNA和RNA含量逐渐下降 ，而蛋白酶和核酸酶活性逐渐升高。
The results indicated that the contents of soluble protein, DNA and RNA in flag leaf gradually reduced, but the activities of protease and nuclease gradually raised during senescence.
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