Effect of Cultivation Measures of Previous Winter Wheat on Following Summer Maize Photosynthesis Characteristics and Yield

doi:10.7668/hbnxb.2017.04.025

Abstract

Abstract: The study is to explore effect of planting pattern and residual nitrogen applied to winter wheat on photosynthesis characteristics and yield of following summer maize. The experiment was conducted in the North Plain Region of winter wheat-summer maize rotation system in 2013-2015. Nitrogen applied at 112.5,225.0 kg/ha(N1,N2)in winter wheat,summer maize was seeded on ridge planting (BP) and uniform row (UR) after winter wheat was harvested in furrow planting (F) and uniform planting (U) without nitrogen. The results showed that compared with UR and N1,BP and N2 increased leaf area index (LAI),chlorophyll content index (CCI),photosynthetic rate (Pn) and dry matter accumulation of summer maize. BP delayed decrease of LAI,CCI and Pn during late growth stage. During growth seasons of winter wheat,compared with U,grain yield,ears and grains per ears in F planting pattern was increased by 3.1%,6.9% and 2.4%,respectively. Compared with N1,grain yield,ears and grains per ears in N2 increased by 5.0%,13.8% and 4.9%,respectively; During growth seasons of summer maize,compared with UR,grain yield,grains per ears and harvest index (HI) in BP planting pattern increased by 7.1%,2.4% and 5.9%,respectively. Compared with N1,grain yield,grains per ears and HI in N2 was increased by 13.0%,9.2% and 11.9%,respectively. Therefore,under the condition of 225.0 kg/ha nitrogen,the planting pattern,summer maize was seeded on ridge (BP) after winter wheat was harvested in F planting pattern,could be conducive to increase grain yield of both winter wheat and summer maize.

Key words: Winter wheat-summer maize rotation, Residual effect of nitrogen fertilizer, Photosynthesis characteristics, Chlorophyll content index, Grain yield

CLC Number:

S512.01

ZHANG Zhen, ZHONG Wenwen, WANG Xingya, CHEN Yuhai, ZHOU Xunbo. Effect of Cultivation Measures of Previous Winter Wheat on Following Summer Maize Photosynthesis Characteristics and Yield[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(4): 155-161. doi: 10.7668/hbnxb.2017.04.025.

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