Journal of Northern Agriculture ›› 2020, Vol. 48 ›› Issue (5): 10-16.doi: 10.12190/j.issn.2096-1197.2020.05.02

• Corp cultivation·Crop genetic breeding • Previous Articles     Next Articles

Effects of different preceding crops on potato dry matter accumulation and yield in the northern of Yinshan Mountain

ZHANG Haibin1,2, MENG Meilian1, CHEN Youjun3, YE Jun2, SHAO Ying4, ZHANG Tingting1, MENG Lili1   

  1. 1. College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China;
    2. Institute of Crop Breeding and Cultivation,Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    3. College of Life Sciences,Inner Mongolia Agricultural University,Hohhot 010011,China;
    4. College of Horticulture and Plant Protection,Inner Mongolia Agricultural University,Hohhot 010011,China
  • Received:2020-07-12 Online:2020-10-20 Published:2020-12-17

Abstract: 【Objective】The experiment was designed to explore the effects of different previous crops on potato library activity,dry matter accumulation,yield and disease occurrence to provide theoretical basis for selecting suitable previous crops for potato planting in the northern of Yinshan Mountain,Inner Mongolia.【Methods】A fixed-point experiment was conducted in the northern of Yinshan Mountain,Inner Mongolia.There were 4 treatments:green manure pre-planting(LM),sunflower pre-planting(XM),oat pre-planting(YM),and potato pre-planting(MM).We compared and analyzed the effects of different previous crops on potato library activity,dry matter accumulation,yield and disease occurrence with each area of 0.06 hm2(200 m×3 m).【Results】 In the northern foot of Yinshan Mountain climates,when the previous crop type is green manure,the activity of potato bank reached the highest value 0.069 4 g/(g·d),followed by oat crop.In the research of the maximum dry matter growth rate of potato and the rapid accumulation of dry matter of the whole plant,the different previous crop type had great influence on these two values,the order was shown as green manure pre-work>potato pre-work>oat pre-work>sunflower pre-work.And when it turned to maximum growth rate of tuber dry matter and average dry matter accumulation rate of potato tuber during rapid accumulation period,the order was green manure pre-work>oat pre-work>potato pre-work>sunflower pre-work.The equilibrium period of dry matter accumulation of stem,leaf and tuber first appeared,about 34 days after sowing,when green manure and oats were used as the previous crop,but when potato was used as the previous crop,it last appeared,about 56 days. When green manure and oat were used as the previous crop,the yield of potato was the highest,reaching 46 992 kg/hm2 and 46 073 kg/hm2 respectively. The incidence rate of Fusarium wilt,tuber wilt and tuber black mole disease index were the highest when potato was used for the previous crop.But the tuber scab disease index was lowest when potato was used for the previous crop,followed by the sunflower pre-crop.【Conclusion】 Comprehensive analysis of different pre-crops on potato bank activity,dry matter accumulation,The occurrence of disease and the impact of yield,the pre-crop suitable for potato planting is the best pre-green crop,followed by the oat pre-crop in the northern of Yinshan Mountain,Inner Mongolia.

Key words: Preceding crops, Potato, Library activity, Dry matter accumulation, Yield, Disease occurrence

CLC Number: 

  • S532