Effects of Different Field Collocation Patterns on Photosynthetic Characteristics and Dry Matter Accumulation and Yield in Intercropping Soybean

doi:10.7668/hbnxb.20190359

Abstract

Abstract: In order to explore the effects of bandwidth and soybean planting density on soybean yield in maize-soybean intercropping system.The study used two factors split plot design,the main factors for three levels of bandwidth(BW₁:2.0 m,BW₂:2.2 m,BW₃:2.4 m),deputy factors for four soybean density gradient(D₁:52 500 plants/ha,D₂:67 500 plants/ha,D₃:82 500 plants/ha,D₄:97 500 plants/ha),the photosynthesis and dry matter accumulation,organ allocation ratio,grain-filling and yield of soybean were surveyed.The results showed that the increase of bandwidth was conducive to the increase of soybean photosynthetic characteristics,dry matter accumulation of population,grain filling,100-grain weight and grain number per plant,thus increasing soybean yield. The soybean yield of BW₃ was significantly increased by 37.2% and 19.6% compared with that of BW₁ and BW₂. At each density level,the soybean yield showed a trend of increasing first and then decreasing,and the soybean yield of D₃ was significantly increased by 9.4% and 6.0% compared with that of D₁ and D₄. In the case of BW₃,the treatment of different densities was as follows: D₂ > D₃ > D₄ > D₁. In maize and soybean intercropping,when the bandwidth was 2.4 m and the planting density was 67 500 plants/ha to 82 500 plants/ha,the photosynthetic characteristics of soybean improved and the dry matter accumulation of the population increased,thus increasing the yield.

Key words: Maize-soybean intercropping, Field collocation patterns, Photosynthetic characteristics, Dry matter accumulation, Yield

CLC Number:

S565.01
S311

WANG Tian, PANG Ting, DU Qing, CHEN Ping, ZHANG Xiaona, ZHOU Ying, WANG Jin, YANG Wenyu, YONG Taiwen. Effects of Different Field Collocation Patterns on Photosynthetic Characteristics and Dry Matter Accumulation and Yield in Intercropping Soybean[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(2): 107-116. doi: 10.7668/hbnxb.20190359.

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