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rot bolls
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  烂铃
     y=axb(b<0)for the rot bolls on 11~18 fruiting branches with themost rot bolls occurred at the 1~2 fruiting position.
     11~18台果枝上为y=axb(b<0),第1~2果节上虫蛀烂铃最多。
短句来源
     The vertical distribution modelshowed that y=ax2+bx+c(a<0) with the most rot bolls occurred at the frist fruitingbranch.
     垂直方向分布模型为y=ax2+bx+c(a<0),第11台果枝上虫蛀烂铃最多;
短句来源
     (2)The horizontal distribution model of the rot bolls on thecotton plant infected by the cotton bollworms is as follows: y =ax ̄2+bx+c(a<0)for the3~10 fruiting branches,with the most rot bolls infected by bollworms occurred at the 2~3fruiting position.
     (2)棉铃虫蛀害烂铃在棉株上的水平方向分布模型:3~10台呆枝上呈y=ax2+bx+c(a<0),另2~3果节上虫蛀烂铃最多;
短句来源
     Researches showed that(1)The distribution model of the cotton boll rot dis-ease on the cotton plants is the same for the horizontal,vertical and extented demension byy =axb(b<0),which is dominated by the rot bolls on the 1~3 fruiting branches at thelower plant part and the rot bolls on 2.5 coical layer,and is 89.22%and 97.84%of thetotal rot bolls,respectively.
     研究结果表明:(1)病害烂铃在棉株上的水平、垂直和外扩三方向上的分布模型均呈y=axb(b<0),以棉株基部1~3台果枝和2.6个圆锥体围层上的烂铃为主,分别占烂铃总数的89.22%和97.84%。
短句来源
     The most rot bolls infected by the bollworms occurred at the 1~2 fruiting posi-tion on the 10~15 fruiting branches.
     虫蛀烂铃以11~15台果枝上的另1~2天节上分布为核心,占虫蛀烂铃总数的54.76%。
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  相似匹配句对
     Which is 54.76% of the total rot bolls.
     (3)上述结果对指导棉花烂铃防治具有重要的科学意义。
短句来源
     ON THE FOOT ROT OF CITRUS
     柑桔脚腐病研究
短句来源
     TheSimulationModelsfortheDevelopmentofSquares(Bolls)andYieldFormation
     棉花蕾铃发育与产量形成的模拟模型
短句来源
     potato rot positive;
     马铃薯软腐;
短句来源
     The most rot bolls infected by the bollworms occurred at the 1~2 fruiting posi-tion on the 10~15 fruiting branches.
     虫蛀烂铃以11~15台果枝上的另1~2天节上分布为核心,占虫蛀烂铃总数的54.76%。
短句来源
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This paper is aimed at finding out the relationship between the occure-nce of second generation cotton bollworm and its damage to cotton plants and the tolerance (or compensating ability) of cotton plants through picking bolls off plants artificially as bollworms damage to them. The experiments and demonstrations in 1982-1987 showed that cotton plants at their early stage of reproduction have a marvellous compensating ability when treated with artificial pick-off of bolls and smearing the tops of...

This paper is aimed at finding out the relationship between the occure-nce of second generation cotton bollworm and its damage to cotton plants and the tolerance (or compensating ability) of cotton plants through picking bolls off plants artificially as bollworms damage to them. The experiments and demonstrations in 1982-1987 showed that cotton plants at their early stage of reproduction have a marvellous compensating ability when treated with artificial pick-off of bolls and smearing the tops of plants with chemicals. This measure gave the control effectiveness of under 10 boll-worms per 100 plants, yield increase of more than 10%, rotted bolls decrease 50% with the strengthening of the resistance of plants to adverse conditions and delaying the time of emaciation of plants. Meanwhile it reduced costs for control of cotton bollworm and protected natural enemies of the pest.

本文是利用棉花耐害性或补偿能力,通过人工模拟摘蕾,了解二代棉铃虫发生为害规律和棉花本身耐害性(补偿能力)的关系.通过1982—1987年对棉花早期摘蕾并给以药剂点涂棉株顶尖试验示范,证明棉花生育早期具有很强的补偿能力.该项措施能控制二代棉铃虫在百株10头以下,增加棉花产量10%以上,减少棉花烂铃50%,增强棉花抗逆能力,推迟棉花衰退,同时能减少防治费用,保护天敌,具有明显的经济效益和生态效益.

The data of correlation analysis indicated that high seedcotton yield of cotton in Changsha, region mainly consists of the amount of early picked cotton yield (before Oct.1)and middle picked cotton yield (from Oct. 1 to Nov. 10), but has little correlation with later picked cotton yield (Nov. 10on). The amount of early picked cotton yield was decided by the number of dehiscent bolls and the percentage of rotting bolls before Oct. 1. The yield of middle picked cotton was decided by the number of undehiscent...

The data of correlation analysis indicated that high seedcotton yield of cotton in Changsha, region mainly consists of the amount of early picked cotton yield (before Oct.1)and middle picked cotton yield (from Oct. 1 to Nov. 10), but has little correlation with later picked cotton yield (Nov. 10on). The amount of early picked cotton yield was decided by the number of dehiscent bolls and the percentage of rotting bolls before Oct. 1. The yield of middle picked cotton was decided by the number of undehiscent bolls in late Sept., and that of later picked cotton yield was decided by the number of young bolls in the same time. Through statistical analysis with computer to the experimental results, 10 mathmatical models have been built up and tested, and a model for obtaining 100 kg/mu ginned cotton have been simnlated and built up according to several better combinations based on the modrl of total cotton yield.

试验资料经相关分析表明,长沙地区高产棉花的籽棉产量主要由前期(10月1日前)和中期(10月1日至11月10日)正常的收花量构成,与后期(11月10日后)收花量关系不大。前期收花量决定于9月下旬以前的吐絮铃数和烂铃率;中期收花量决定于9月下旬的未吐絮成铃数;后期收花量决定于同期的幼铃数。试验结果经电子计算机统计,建立和检验了10个数学模型,並以籽棉总产量模型模拟的优化方案为共同依据,模拟建立了亩产皮棉100公斤左右的产量总体模式:籽棉产量270公斤/亩,要求在10月1目前收花量占57.4%以上,11月10日前收花量占94%以上,11月10日后收花量占5%左右;要求9月下旬总铃数67500个/亩以上,其中成铃数66000个/亩以上,已吐絮铃数46400个/亩以上,幼铃数1500个/亩左右,烂铃率不超过20%;要求初花期果节数68000个/亩左右,盛花打顶前株高102厘米左右,最终高度110厘米左右(密度3000株/亩)。

Removing early—buds caused obvious compensating effects on growth anddevelopment and boll setting in cotton,which showed:increased growth ofmain stem;increased weight of per boll;increased number of fruiting branc-hes and bolls(rot bolls were decreasing);increased rate of floral—bud format-ion and lint cotton;more intensive setting of bolls;extremely significant com-pensating effect of boll setting(r=-0.8293);more reasenable time and sp-ace distribation of boll setting.Among the methods,removing...

Removing early—buds caused obvious compensating effects on growth anddevelopment and boll setting in cotton,which showed:increased growth ofmain stem;increased weight of per boll;increased number of fruiting branc-hes and bolls(rot bolls were decreasing);increased rate of floral—bud format-ion and lint cotton;more intensive setting of bolls;extremely significant com-pensating effect of boll setting(r=-0.8293);more reasenable time and sp-ace distribation of boll setting.Among the methods,removing 2~3 bottom fr-uiting—branches displayed better compensating effects—produced 33.1%more lintcotton.Removing 6 early—buds produced 21.2% more lint cotton.Mixed—spnayethephon adding C_8 alcohol and mixed—spray ethephon adding C_(10)alcohol oncotton showed lower compensating effects,the adding production reached 18.4%and 15.5% respectively.

1987年在郑州和虞城县的地膜覆盖早发棉田,采用人工去早蕾(去棉株基部2~3个果枝、去基部1~4果枝上6个早蕾)和化学药剂除早蕾(混喷乙烯利加正辛醇、混喷乙烯利加正癸醇)等不同去除早蕾方法,研究其对棉花生育和产量的影响。结果表明,棉花去除早蕾,生育和成铃有明显的补偿效应。表现为主茎生长加快,果枝数增加,现蕾加速,开花成铃集中,成铃补偿效应极为显著(r=—0.8293~(##)),成铃增加,时空分布较为合理,烂铃减少,铃重和衣分有所提高。其中,棉花对果枝补偿效应较好,增产达33.1%;棉花去蕾增产21.2%;混喷乙烯利加正辛醇和混喷乙烯利加正癸醇补偿效应较差,其增产幅度分别为18.4%和15.5%。

 
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