关键词: 种植方式, 花生, 一年两熟, 早春

Abstract: In order to achieve two peanut crops a year in Henan Province, and to improve its propagation coefficient, this paper studied the effect of different planting patterns in  early spring on peanut yield of 2 crops per year. Taking ‘Yuhua9326’ as material, the experiment was carried out at ‘Yuanyang Base’ of Henan Provincial Academy of Agricultural Sciences. Three sowing patterns of arched shed, plastic film, and open field were adopted to study their effects on temperature traits and growth development of peanut sowed in early spring and harvested twice per year. The results showed that peanuts propagation coefficient was increased by the pattern of arched shed plus plastic film, because the early stage of development process was obviously accelerated, and the ground temperature, humiture of small environment, number of pods and  percent of plump were all improved. Compare to cultivation in open field, the flowering time was 24 d earlier, and  ground temperature increased by 7℃, number of pods increased by 73%, percent of plump increased by 200%, propagation coefficient of single season reached 5 times, and annual reproductive coefficient were 13 times by arched shed plus plastic film. Through invescating temperature characteristics and propagation coefficient, this experiment studied and compared these 3 patterns, found the best measures, and solved the problems as low temperature,  lack of growth period and slow process in growth and development, thus the peanut propagation coefficient was increased. The paper also provided theoretical basis and technical supports for studies on peanuts yield of 2 crops a year in Henan Province.

Key words: planting pattern, peanut, two crops a year, early spring