Crops ›› 2025, Vol. 41 ›› Issue (2): 234-240.doi: 10.16035/j.issn.1001-7283.2025.02.032

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Effects of Different Intercropping Patterns on Sorghum Growth and Development

Li Junzhi(), Dou Shuang, Wang Xiaodong, Zhang Meng, Xiao Jibing()   

  1. Liaoning Institute of Dryland Agriculture and Forestry, Chaoyang 122000, Liaoning, China
  • Received:2024-01-11 Revised:2024-08-06 Online:2025-04-15 Published:2025-04-16

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Abstract:

In order to explore the effects of intercropping patterns on growth and development of sorghum, and screen out the suitable intercropping patterns of sorghum-peanut for western Liaoning Province, a randomized block experiment design was adopted. The glutinous sorghum variety (Jinuoliang 1) and peanut variety (Yuanza 6) were used as the experimental materials. Five planting patterns were set up, sorghum single cropping (CK1), peanut single cropping (CK2), 2 rows of sorghum+4 rows of peanuts (T1), 2 rows of sorghum+6 rows of peanuts (T2), 4 rows of sorghum+4 rows of peanuts (T3). The results showed that the net photosynthetic rate and SPAD value of sorghum under different intercropping treatments were higher than those under single cropping. The yield of intercropping was lower than that of single cropping, which was 43.70%-67.22%. The land equivalent ratio of different intercropping treatments were 1.25, 1.11 and 1.16, respectively, and the land productivity was increased by 11.00%-25.00%, which had a significant intercropping advantage. Therefore, it is concluded that T1 intercropping pattern (two rows of sorghum+four rows of peanut) was more suitable for intercropping in western Liaoning Province.

Key words: Intercropping pattern, Sorghum, Photosynthetic characteristics, Yield, Dry matter accumulation

Fig.1

Meteorological data from May to September in 2023"

Fig.2

Effects of intercropping mode on Pn of sorghum leaves"

Fig.3

Effects of intercropping mode on SPAD value of sorghum leaves"

Table 1

Effects of intercropping patterns on yield of sorghum and peanut kg/hm2"

年份
Year		 处理
Treatment		 产量Yield
高粱Sorghum 花生Peanut
2023 T1 4987.86b 2964.97b
T2 3485.22c 3161.30b
T3 5360.73b 2289.57b
CK1 7975.10a －
CK2 － 4745.89a

Table 2

Effects of intercropping patterns on sorghum yield and its components factors"

处理
Treatment		 产量
Yield
(kg/hm2)		 千粒重
1000-kernel
weight (g)		 穗粒重
Kernel weight
per panicle (g)		 穗粒数
Kernels per
panicle		 干物质积累量
Dry matter accumulation
(kg/hm2)		 收获指数
Harvest
index
T1 4987.86b 22.11a 99.71a 4534a 10 163.42b 0.51a
T2 3485.22c 21.02a 92.89a 4438a 6836.44c 0.51a
T3 5360.73b 18.63a 71.44b 3835a 10 052.58b 0.54a
CK1 7975.10a 18.78a 53.14c 2862a 19 497.17a 0.41a

Table 3

Effects of intercropping patterns on land equivalence ratio"

处理Treatment LERs LERp LER
T1 0.62a 0.62a 1.25a
T2 0.44b 0.67a 1.11a
T3 0.67a 0.48a 1.16a

Fig.4

Effects of intercropping patterns on dry matter accumulation per plant of sorghum"

Fig.5

Effects of intercropping mode on dry matter accumulation in different organs of sorghum"

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