Effects of Different Water and Fertilizer Treatments on the Morphology, Physiology and Yield of Wheat in Spring

doi:10.7668/hbnxb.20190603

Abstract

Abstract: In order to make clear and determine the effect of different water and fertilizer treatments on wheat morphology, flag leaf physiological parameters and yield, the drought resistance variety Shinong 086 was used as the test material, N1(1),N2(1),N3(1),N4(1),N1(2),N2(2),N3(2) and N4(2) eight treatments were set according to the combination of nitrogen fertilizer application (150,225,300,375 kg/ha) and irrigation times(once,twice), and using N0 (no fertilizer and no irrigation) as the control, the differences of morphology, flag leaf physiological parameters and yield of wheat treated with different water and fertilizer treatments were studied. The results showed that plant height, leaf number, leaf area, dry matter accumulation and chlorophyll content increased gradually with the increase of nitrogen application, but the regularity of one water and two water was not obvious, the number of wheat panicles was the most under N2(2) treatment. The weight of green leaves and stems of each treatment were higher than that of N0 treatment and two water was higher than one water, but the weight of wheat ear had no significant difference under one water and two water condition. The content of soluble protein changed little at 7, 21 d after flowering and decreased rapidly at 35 d after flower, but soluble sugar content showed a tendency to increased gradually with the advance of the fertility process; the two indexes showed the trend of N4 > N3 > N2 > N1 > N0. The net photosynthetic rate (Pn) and stomatal conductivity (Gs) decreased gradually with the fertility process progresses and each treatment showed a trend of N4 > N3 > N2 > N1 > N0, furthermore, the variations of one water and two water were not consistent at different stages. The SOD and POD activities showed a similar change, but the enzyme activity was stronger under two water condition. The grain yield and its components were higher under N2 treatment and two water was more than one water; with the increasing of nitrogen application(> N2), the yield showed a decreasing trend. Comprehensively,it was indicated that two water and 225 kg/ha was the best nitrogen fertilizer with high yield and high efficiency, which could provide practical reference for production.

Key words: Wheat, Different water and fertilizer treatment, Plant morphology, Physiological paramete, Yield

CLC Number:

S512.01

DONG Weixin, HAN Lijie, ZHANG Yuechen. Effects of Different Water and Fertilizer Treatments on the Morphology, Physiology and Yield of Wheat in Spring[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(2): 161-169. doi: 10.7668/hbnxb.20190603.

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