施肥对冬小麦体内硝酸还原酶活性及产量的影响

硝酸还原酶(NR)是植物体内硝态氮还原过程的重要诱导酶,它的高低直接影响着植株对氮素的利用程度和种子质量。本文论述了1984—1986年对冬小麦植株不同部位器官硝酸还原酶话性(NRA)变化规律的研究以及不同追肥量、追肥期对植株体内叶片、叶鞘、茎秆、穗部等器官和产量的影响,为冬小麦的高产栽培和合理施肥寻找理论依据。通过对NRA的研究,在育种工作中也有助于加强对品种的早期鉴别和评价。

The Effect of Fertilization on Nitrate Reductase Activity and Yield of Winter Wheat

Nitrate reductase (NR)is an important induced enzyme for nitrate nitrogen reduction in a plant. Its activity level has direct effect on the nitrogen utilization of a plant and seed quality.This treatise studies the Variation Laws of Winter Wheat Nitrate Reductase Activity (NRA)in different parts of a plant and some species in Winter Wheat (Triticum aestivum L.)from 1984 to 1986. Meanwhile, it also studies theoretically the effect of different fertilizer application and different fertilization periods on NRA and the growth of leaves, sheaths, stalks, ears and the yield of wheat, for the improvement of grain yield and reasonable fertilization in winter wheat.The study of NRA is greatly helpful to the identification and evaluation of species in early state in the course of breeding.