Welcome to CHINESE JOURNAL OF OIL CROP SCIENCES,

CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (4): 656-.doi: 10.19802/j.issn.1007-9084.2020069

Previous Articles     Next Articles

Effects of different dense planting methods on leaf function and yield of summer-sowing peanut

  

  1. Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture and Rural Affairs; Henan Provincial Key Laboratory for Oil Crops Improvement; National Center for Peanut Improvement, Henan Peanut Subcenter; National and Provincial Joint Engineering Laboratory for Peanut Genetic Improvement; Industrial Crops Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
  • Online:2021-08-28 Published:2021-08-31

Abstract:

To explore the the effects of proper planting density on the reproductive growth and yields of peanut population, Yuanza 6, Spanish type peanut with small pod was used as the material, the changes of leaf function, photosynthetic characteristics and yields of peanuts under various combinations in summer-planting peanut were studied. The results showed that the planting model of 2.25 × 105 hole / hm2 could reduce the net photosynthetic rate, antioxidant capacity and the photosynthetic effective radiation interception rate of the middle and lower part of the population, and increase the chlorophyll content, leaf area index and the photosynthetic effective radiation interception rate of the upper part of the population, and increase the full pod rate and kernel rate compared with that in 1.8 × 105 hole/ hm2. Yields of the planting model of 2.25 × 105 hole / hm2 was 12.44% higher than that in 1.8 × 105 hole / hm2, yields of double seed was 12.47% higher than that of single seed, and yields of equal row spacing planting and wide-narrow row planting were basically the same. Yuanza 6 is a close-planting variety, which can be planted directly in summer. The planting density of the variety is increased properly, yields can be increased effectively and the commercial quality of pods can be improved.

Key words: close planting, peanut, leaf function, yield

CLC Number: