Study on High Yielding Effects of Row and Plant Spacing of Mechanized Sowing in Sesame

doi:10.7668/hbnxb.2018.06.020

Abstract

Abstract: In order to explore the high yield effect of different seeding methods and clarify row and plant spacing of mechanized on high yielding in sesame. Field experiments were conducted to study functional-leaves photosynthetic characteristics, agronomic traits, yield and its components and grain quality of sesame under different row and plant spacing configuration with Zhengzhi 98N09 and Zhengtaizhi 1 in experiment base of Henan Pingyu in 2014. The results showed that the SPAD values and net photosynthesis rate in sesame functional-leaves were different under different row and plant spacing configuration. The net photosynthetic rate decreased with plant spacing reduced, effects of row and plant spacing on agronomic traits, yield and its components was great, while effects on quality of sesame was little. Among them, plant spacing had a greater impact on plant height, height of the first capsule, length of no capsule tip and length of main fruit axis, while row spacing had a smaller impact. The number of capsules per plant decreased with the decrease of plant spacing. The variation regularity of seed number per capsule with different varieties, but also showed the change rule with plant spacing reduced. 1000-grain weight was also decreased with plant spacing, and the 1000-grain quality of equal row spacing was higher than that of wide and narrow row spacing. The effect of row spacing on quality was not significant. The yield of sesame seed was the highest under the condition of row spacing was no more than 11.11 cm(the density was less than 225 000 seedlings/ha), under the condition of plant spacing allocation, not only the chlorophyll content of sesame leaves was higher, the photosynthetic assimilation ability of sesame leaves was stronger, but also the yield components were more coordinated, and the agronomic characters were better, which could be used as a reference for production.

Key words: Machine sowing, Sesame, Row and plant spacing, High yielding effect

CLC Number:

S565.01

WU Yin, GAO Tongmei, WANG Dongyong, LI Feng, TIAN Yuan, ZENG Yanjuan, WEI Shuangling. Study on High Yielding Effects of Row and Plant Spacing of Mechanized Sowing in Sesame[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2018, 33(6): 145-151. doi: 10.7668/hbnxb.2018.06.020.

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