[Objective]The paper was to investigate the occurrence of Lithocolletis ringoniella adults in aged and new apple orchards in Shijiazhuang area.[Method]The growth and decline dynamics of L.ringoniella adults in 3a appl...[Objective]The paper was to investigate the occurrence of Lithocolletis ringoniella adults in aged and new apple orchards in Shijiazhuang area.[Method]The growth and decline dynamics of L.ringoniella adults in 3a apple orchard and 17a apple orchard in Shijiazhuang were monitored by sex attractant trapping method.Meantime,the trapping effects of sex attractant on L.ringoniella were compared with that of sweet-sour liquor.[Result]L.ringoniella occurred five generations annually in Shijiazhuang area.The adults emerged in April,and entered into peak occurrence period during May and June,with overlapping generations.Comparison between sex attractant and sweet-sour liquor tests showed that the trapping effect of sweet-sour liquor received little effect,but was expensive.Therefore,it is not recommended to use sweet-sour liquor for prevention and treatment of L.ringoniella in production.[Conclusion]In the actual production,sex attractant trapping should be combined with appropriate agricultural control measures to control the damage of L.ringoniella.展开更多
Powdery mildew is a major disease of strawberry.It harms both plants and fruits,seriously affecting the quality and yield of strawberry.This article briefly introduces the harms and occurrence regularity of powdery mi...Powdery mildew is a major disease of strawberry.It harms both plants and fruits,seriously affecting the quality and yield of strawberry.This article briefly introduces the harms and occurrence regularity of powdery mildew in strawberry and summarizes the corresponding control measures,with a view to providing a certain scientific reference for the prevention and treatment of the disease.展开更多
The effect of postharvest heat treatment on browning of Huangguan pear was investigated. The results showed that heat treatment improved hardness and soluble solid content of stored pear fruit, postponed the improveme...The effect of postharvest heat treatment on browning of Huangguan pear was investigated. The results showed that heat treatment improved hardness and soluble solid content of stored pear fruit, postponed the improvement of MDA content and PPO activity in stored pear fruit and alleviated the reduction of SOD activity and the lowering of PG activity. To sum up, heat treatment reduces the occurrence of browning of stored pear fruit through the regulation of the changes in a series of physiological and biochemical indexes of fruit.展开更多
Continuous overcast and hazy days are common for the winter in Hebei Province,these disastrous weathers have tremendous negative effect on the production of protected strawberry cultivation,for leading to the problems...Continuous overcast and hazy days are common for the winter in Hebei Province,these disastrous weathers have tremendous negative effect on the production of protected strawberry cultivation,for leading to the problems such as degrading photosynthesis of leaves,poor pollination and fertilization,more malformed fruits,low percentage of fertile fruits,delayed maturation of fruits,degraded quality and yield,and aggravated diseases.In view of the disastrous weathers and problems,the authors put forward the measures for the management of protected strawberry cultivation in continuous overcast and hazy days,to provide technical support for strawberry farmers.展开更多
文摘[Objective]The paper was to investigate the occurrence of Lithocolletis ringoniella adults in aged and new apple orchards in Shijiazhuang area.[Method]The growth and decline dynamics of L.ringoniella adults in 3a apple orchard and 17a apple orchard in Shijiazhuang were monitored by sex attractant trapping method.Meantime,the trapping effects of sex attractant on L.ringoniella were compared with that of sweet-sour liquor.[Result]L.ringoniella occurred five generations annually in Shijiazhuang area.The adults emerged in April,and entered into peak occurrence period during May and June,with overlapping generations.Comparison between sex attractant and sweet-sour liquor tests showed that the trapping effect of sweet-sour liquor received little effect,but was expensive.Therefore,it is not recommended to use sweet-sour liquor for prevention and treatment of L.ringoniella in production.[Conclusion]In the actual production,sex attractant trapping should be combined with appropriate agricultural control measures to control the damage of L.ringoniella.
基金Natural Science Foundation of Hebei Province(C2018301047)Foundation for High-level Talents in Hebei Province(A201802016)+3 种基金Scientific and Technological Research and Development Plan Project of Hebei Province(16226313D-4)Innovation Project of Hebei Academy of Agriculture and Forestry Sciences(C19C0701-03)Innovative Team Building Project of Hebei Academy of Agriculture and Forestry Sciences(F20E06001-2)Youth Foundation of Hebei Academy of Agriculture and Forestry Sciences(2018100103).
文摘Powdery mildew is a major disease of strawberry.It harms both plants and fruits,seriously affecting the quality and yield of strawberry.This article briefly introduces the harms and occurrence regularity of powdery mildew in strawberry and summarizes the corresponding control measures,with a view to providing a certain scientific reference for the prevention and treatment of the disease.
基金Supported by National Natural Science Foundation of Hebei Province(C2015301004)
文摘The effect of postharvest heat treatment on browning of Huangguan pear was investigated. The results showed that heat treatment improved hardness and soluble solid content of stored pear fruit, postponed the improvement of MDA content and PPO activity in stored pear fruit and alleviated the reduction of SOD activity and the lowering of PG activity. To sum up, heat treatment reduces the occurrence of browning of stored pear fruit through the regulation of the changes in a series of physiological and biochemical indexes of fruit.
文摘Continuous overcast and hazy days are common for the winter in Hebei Province,these disastrous weathers have tremendous negative effect on the production of protected strawberry cultivation,for leading to the problems such as degrading photosynthesis of leaves,poor pollination and fertilization,more malformed fruits,low percentage of fertile fruits,delayed maturation of fruits,degraded quality and yield,and aggravated diseases.In view of the disastrous weathers and problems,the authors put forward the measures for the management of protected strawberry cultivation in continuous overcast and hazy days,to provide technical support for strawberry farmers.
