Difference analysis on seed yield and root cap characteristics for spring maize under water fertilizer and high yield optimization of shallow burying drip irrigation

doi:10.3969/j.issn.1004-1524.2022.01.01

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (1): 1-9.DOI: 10.3969/j.issn.1004-1524.2022.01.01

• Crop Science • Previous Articles Next Articles

Difference analysis on seed yield and root cap characteristics for spring maize under water fertilizer and high yield optimization of shallow burying drip irrigation

GAO Xin(), YANG Hengshan^*(), ZHANG Ruifu, ZHANG Yuqin, LI Rui, ZHANG Mingwei

Agricultural College/Forage Crops Engineering Research Center of Inner Mongolia Autonomous Region,Inner Mongolia Minzu University, Tongliao 028000, Inner Mongolia,China

Received:2021-04-22 Online:2022-01-25 Published:2022-02-05
Contact: YANG Hengshan

Abstract

Abstract:

To investigate the effect of field practice of shallow burying drip irrigation on seed yield and root cap characteristics, differences in yield characters, root and shoot dry matter quality and morphological characteristics under two cultivation modes: shallow burying drip irrigation and fertilizer optimized high yield mode (HY) and farmer production mode (CK) were studied by using two maize cultivars, Xianyu1483 and Dika159. The results showed that number of panicles and grains per unit area, yield and nitrogen fertilizer under HY mode were increased significantly compared with those under CK mode. HY practice mode also enhanced dry matter accumulation from silking to maturity stage, increased the leaf area per plant and leaf area index, kept leaf activity at a high level; In addition, dry matter mass of root system in soil depth of 0-20 cm was significantly reduced, and both the number of roots in depth of 20-40 cm and root activity improved under HY mode compared with those under CK mode. Therefore, it was concluded that HY mode weakened the adverse effects caused by dense planting, made root cap form an excellent structure and maintained a strong individual material production capacity for plants, and thereby increased seed yield.

Key words: maize, cultivation patterns, shallow drip irrigation, yield, root canopy characteristics

CLC Number:

S513

GAO Xin, YANG Hengshan, ZHANG Ruifu, ZHANG Yuqin, LI Rui, ZHANG Mingwei. Difference analysis on seed yield and root cap characteristics for spring maize under water fertilizer and high yield optimization of shallow burying drip irrigation[J]. Acta Agriculturae Zhejiangensis, 2022, 34(1): 1-9.

Figures/Tables 7

Table 1 Yield components and nitrogen partial productivity

处理 Treatment	产量 Yield/(kg·hm^-2)	单穗重 Weight per spike/kg	每hm²穗数 Spike number per hm²	穗粒数 Grain number	千粒重 1 000-grain weight/g	氮偏生产力 N-PEP/(kg·kg^-1)
HY1483	17 065.95±271.35 a	0.195±0.002 a	87 390±1 035 a	520±29 a	366.49±3.58 a	51.72±0.82 a
HY159	14 808.60±534.00 b	0.168±0.005 c	88 050±2 400 a	471±15 b	361.04±2.10 a	44.87±1.61 b
CK1483	13 720.35±426.30 c	0.187±0.012 ab	73 380±2 580b	518±30 a	362.61±3.96 a	41.58±1.29 c
CK159	12 949.05±225.75 c	0.180±0.002 bc	72 090±1 800 b	508±15 ab	360.03±5.25 a	39.24±0.68 c

Fig.1 Changes of dry matter weight per plant at different grow stages and dry matter ratio at maturity of maize under different modes V6,Jointing stage;V12,Bell-mouthing stage;R1,Silking stage; R6, Physiological maturity stage.Bars marked without the same lowercase letter indicated significant differences at P<0.05.The same as bellow.

Fig.2 LAI and leaf area per plant under different modes in silking stage of maize

Fig.3 Changes of MDA content and SOD activity in leaves under different modes in silking stage of maize

Fig.4 Dry weight of root and root shoot ratio under different modes in silking stage of maize

Fig.5 Root radicle and root number under different modes in silking stage of maize

Fig.6 Root activity under different modes in silking stage of maize

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Difference analysis on seed yield and root cap characteristics for spring maize under water fertilizer and high yield optimization of shallow burying drip irrigation

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