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culm rot
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  “culm rot”译为未确定词的双语例句
     The Chemical Control Effect of 25% Sportack Ec on Rice culm Rot
     施保克防治水稻秆腐菌核病的药效试验
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     In these four corresponding plots,the average percentagesfor culm rot were 4.27,3.89,3.65 and 2.17%. Although there was no significantdifference in the final percentages of both headblight and culm rot between thesprayed and unsprayed plots either with or without inoculation,probably due tothe continuous heavy rain in the latter part of the wheat-growing season,yethigher percentages were always observed in the sprayed plots than in the un-sprayed ones throughout the period of disease development.
     在土壤接种喷水、接种不噴水、不接种噴水和不接种不喷水4区,穗腐率分別为42.98,42.05,11.91及6.26%,秆腐率分別为4.27,3.89,3.65及2.17%。
短句来源
  相似匹配句对
     STUDIES ON CULM BROWN ROT OF Phyllostachys viridis
     刚竹秆褐腐病的研究
短句来源
     The Chemical Control Effect of 25% Sportack Ec on Rice culm Rot
     施保克防治水稻秆腐菌核病的药效试验
短句来源
     ON THE ROOT ROT OF SWEETPOTATO
     甘薯根腐病的初步研究
短句来源
     saddle in culm sheath;
     箨叶鞘鞍形 ;
短句来源
     potato rot positive;
     马铃薯软腐;
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  culm rot
A new culm rot disease in bamboo caused by Pterulicium xylogenum is reported for the first time.
      
A new culm rot disease of bamboo in India and its management
      


Various factors affect the development of headblight of wheat caused by Gibbe-rella zeae (Schw.) Petch under field conditions.The present investigation carriedout in 1955 and 1956 at Nanking,Kiangsu province,was primarily concerned withthe development of spores of the pathogen and the amount of rainfall in relationto disease development.For the purpose of inducing epiphytoties of the disease,asusceptible variety of wheat to headblight was grown in the inoculated plots.Inoculation was made at the surface of the...

Various factors affect the development of headblight of wheat caused by Gibbe-rella zeae (Schw.) Petch under field conditions.The present investigation carriedout in 1955 and 1956 at Nanking,Kiangsu province,was primarily concerned withthe development of spores of the pathogen and the amount of rainfall in relationto disease development.For the purpose of inducing epiphytoties of the disease,asusceptible variety of wheat to headblight was grown in the inoculated plots.Inoculation was made at the surface of the soil with mycelium cultured on wheatgrain shortly after planting,and an "artificial rain" by frequent spray of water tothe plants was supplied after heading.Investigations were made on the develop-ment and dissemination of ascospores and conidia of the pathogen,the seasonaldevelopment of the disease and the meteorological factors involved. Field observations showed that the headblight fungus on the soil surface inthe inoculated plots produced both kinds of spores with ths ascospores much morepredominant than the conidia.Perithecia and mature ascospores could be formedboth in the fall and in next spring through early summer under conditions ofadequate moisture and warm temperature suitable for their development.It wasindicated by trapping the spores in the air that the ascospores produced on thesoil surface were the chief source of inoculum for primary infection although theconidia formed on the infected spikes were equally important in spreading the di-sease in the field later in the season.The frequency and amount of ascosporesand conidia present in the air depended upon the height in spore trapping.Whilespores were found most frequently and most abundantly at a height of 17 cm.above the ground,much less spores were caught at heights of 33 cm.and up to117 cm.There was a tendency to decrease in the amount of spores with theincrease in height.A comparative survey of the spores in the air in the inoculated ??and uninoculated plots indicated that a great majority of spores could not bedisseminated very far from their source of production.This,together with thefact that comparatively more spoies were trapped on raining days,made it rea-sonable to consider splashing rain as the more important agent than wind forspore dissemination. The amount of inoculum existing in the soil and the rainfall were proved tobe the factors of utmost importance for the epiphytotic of the disease.In 1955,the average percentages of headblight for the inoculated plots with and withoutthe spray of water were 29.4 and 13.4% respectively,in comparison with the neigh-bouring fields where only very few infected heads were observed.In 1956,theaverage percentages for headblight in the four experimental plots:(1) inoculatedand sprayed with water,(2) inoculated and not sprayed,(3) uninoculated andsprayed,and (4) uninoculated and not sprayed,were 42.98,42.05,11.91 and6.26%,respectively.In these four corresponding plots,the average percentagesfor culm rot were 4.27,3.89,3.65 and 2.17%.Although there was no significantdifference in the final percentages of both headblight and culm rot between thesprayed and unsprayed plots either with or without inoculation,probably due tothe continuous heavy rain in the latter part of the wheat-growing season,yethigher percentages were always observed in the sprayed plots than in the un-sprayed ones throughout the period of disease development.Under conditions ofabundant inoculum in the soil and heavy rainfall,increase in percentage of head-blight could reach as much as 32% within a period of two days even when theplants were already near maturity.In 1955,a daily average temperature over20℃ was found to be favorable for the development of headblight,but observa-tions made in 1956 did not show significant effect of the temperature on thedevelopment of disease.

1.赤霉病菌在土壤表面的病組織上能产生分生孢子及子囊孢子,而以子囊孢子为??主。子囊孢子在播种后入冬前和入春后都能發生,以春夏季發生較多,冬季發生極少。子囊壳形成的多少与成熟程度决定于气温和土湿,較高的温度和潮湿土壤有利于子囊壳的形成和子囊孢子的成熟. 2.春季在麦株附近空气中出現的病菌孢子,前期以子囊孢子为主,后期子囊孢子和分生孢子都有發生。孢子出現的次数和数量以距离地面0.5尺高度的最多,愈高則愈少;孢子發生的数量在雨天或雨后最多。土壤表面形成的子囊孢子和病穗上产生的分生孢子,其傳播似都以雨水的飞濺作用为主,且大部分孢子的傳播距离并不很远。3.在土壤接菌的情况下,苗腐和基腐病的發生并不严重,更少引起植株死亡的現象。秆腐在1955年發生極少,1956年在大田及試驗区內都很普遍。4.土壤內病菌量和雨湿的多少是影响穗腐和秆腐的主要因素,而前者更为重要。在土壤接种喷水、接种不噴水、不接种噴水和不接种不喷水4区,穗腐率分別为42.98,42.05,11.91及6.26%,秆腐率分別为4.27,3.89,3.65及2.17%。5.大量的病菌孢子和連續降雨是促成病害迅速發展的主要条件。20℃以上的日平均温度似有利于病害...

1.赤霉病菌在土壤表面的病組織上能产生分生孢子及子囊孢子,而以子囊孢子为??主。子囊孢子在播种后入冬前和入春后都能發生,以春夏季發生較多,冬季發生極少。子囊壳形成的多少与成熟程度决定于气温和土湿,較高的温度和潮湿土壤有利于子囊壳的形成和子囊孢子的成熟. 2.春季在麦株附近空气中出現的病菌孢子,前期以子囊孢子为主,后期子囊孢子和分生孢子都有發生。孢子出現的次数和数量以距离地面0.5尺高度的最多,愈高則愈少;孢子發生的数量在雨天或雨后最多。土壤表面形成的子囊孢子和病穗上产生的分生孢子,其傳播似都以雨水的飞濺作用为主,且大部分孢子的傳播距离并不很远。3.在土壤接菌的情况下,苗腐和基腐病的發生并不严重,更少引起植株死亡的現象。秆腐在1955年發生極少,1956年在大田及試驗区內都很普遍。4.土壤內病菌量和雨湿的多少是影响穗腐和秆腐的主要因素,而前者更为重要。在土壤接种喷水、接种不噴水、不接种噴水和不接种不喷水4区,穗腐率分別为42.98,42.05,11.91及6.26%,秆腐率分別为4.27,3.89,3.65及2.17%。5.大量的病菌孢子和連續降雨是促成病害迅速發展的主要条件。20℃以上的日平均温度似有利于病害的發展,但兩年的結果不很一致,可能由于其他因子的影响。

 
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