Farm demonstration work in the south helped to fight the cotton boll weevil .
在南部的农业示范作帮助了对棉花象鼻虫的抗争。
Farm demonstration work in the South helped to fight the cotton boll weevil.
南部农场示范工作大大帮助了对棉花象鼻虫的防治。
While fibre break strength was increased with cotton boll age, it was reduced when temperature dropped.
纤维断裂比强度随铃龄增大而升高；相同铃龄随温度下降断裂比强度降低。
Some biological characters and its inheritance of the causal organism of cotton boll Anhui were studied in vitro.
在实验室条件下，对安徽省棉铃疫病菌的若干生物学特性及其遗传进行了研究。
The intensity of inhibition was correlated with the contents of Tannin Acid of the cotton boll in different position.
不同播种期、不同铃期铃的各部位的抑菌强度和棉铃中单宁浓度呈正相关；
It has three generations a year in Shanghai and overwinters asa diapaused larva in the head of the garlic and the dead cotton boll.
在上海一年发生三代，以滞育幼虫在蒜头和枯棉铃组织内越冬。
The sensitivity of diapause induction by photoperiod of the larvae fed by corn ear was stronger than that of the larvae fed by cotton boll.
取食玉米雌穗的幼虫对滞育诱导光周反应的敏感性强于取食棉铃的幼虫。
According to quite a number of research results, this review first made it clear that plant hormones could transport from other organs to cotton boll through phloem.
通过对大量试验结果的分析，初步明确了棉铃确实与其它器官间存在着激素信息的传递，并证明传递的主要途径是韧皮部而不是木质部。
The nitrogen accumulation in cotton boll-shell, cottonseed, cotton fiber and single boll were significantly affected by the nitrogen application rates and their blooming stage.
铃壳、棉籽、纤维及单铃氮素累积受施氮水平和开花期的影响。
In the early years of the century, the boll weevil began devastating the cotton farms in the south.
在上世纪初期，棉铃象甲开始破坏南部的棉花农场。
The cotton grows on the plant as long hairs attached to the seeds inside the boll .
棉花长在植物上，就像长毛附着在棉铃里的种子上一样。
But in the early years of the century, the boll weevil began devastating the cotton farms in the south.
然而在上世纪初期，棉铃象甲开始侵嗜美国南部的棉花农场。
Some bats have even been utilised in pest control experiments, keeping boll moth Numbers down in cotton plantations.
一些蝙蝠甚至被用来做害虫控制实验，使棉花种植园里的棉铃虫数量呈减少的态势。
Gossypol, which is produced by gland cells in the leaves of Cotton, is an attractant to the boll weevil.
棉叶腺胞分泌的棉酚对棉铃象鼻虫是一种引诱剂。
But in the early years of the century, the 3 boll weevil began 4 devastating the cotton farms in the south.
然而在上世纪初期，棉铃象甲开始侵嗜美国南部的棉花农场。
The cotton grows on the plant as long hairs attached to the seeds inside the boll.
棉花在植株上作为附着在种籽上的长茸毛在棉铃里生长发育。
He got born like the cotton in the boll or the rabbit in the pea patch.
他就象棉桃里的棉花，象豌豆地里的野兔子一样生下来了。
The result showed that: 1. These transgenic insect-resistant cotton after introducing different exogenous gene have different resistance to boll-worm because of distinct killing mechanism;
研究结果表明：1导入不同外源基因的转基因抗虫棉因其杀虫机理不同而对棉铃虫抗性存在差异；
The paper studied effects of GA_3 and IAA on cellulase activity in abscission zone from petiole of primary leaves of bean, cotyledon petioles and boll petioles of cotton.
赤霉酸（GA_3）处理菜豆叶柄和棉苗子叶柄外植体，离区的纤维素酶活力增加，而吲哚乙酸（IAA）则抑制离区纤维索酶的活力。
The resistance of frego bract cotton was neutral, but insecticideamount on its green boll surface increased by4.9—10.0 times.
窄卷苞叶对红铃虫的抗性表现为中性，但可提高杀虫剂在棉铃表面的分布量4.9—10.0倍。
With 6 different genetic background and high pure upland cotton lines as female parents, the variation of allogamous affinity and main traits of hybrid boll were analyzed under assisted pollination.
研究了人工授粉条件下6个遗传背景差异较大、纯合度高的陆地棉亲本的异交亲合力及杂交铃主要性状差异。
Cotyledon area was an index of yield in early growth period of cotton and existed positive correlation to seed cotton weight per boll.
子叶叶面积大小是鉴定棉花产量性状的早期形态指标，在同一类型棉花品种中，子叶叶面积与单铃籽棉重存在正相关。
Yet it will affect yield and quality of cotton, as later sowing always results in later development, excessive vegetative growth and boll shedding.
但由于棉花迟播而迟发，又常易徒长，蕾铃脱落更多，结铃推迟，影响产量和品质。
The results showed that (1) The R of high yield cotton was 26 2% lower than that of common cotton (CK) in night time, but total photosynthetic amount was 46 1% higher at bearing boll period.
结果表明，（1）高产棉田花铃期棉叶夜晚呼吸消耗比普通棉田低26．2％，但白天净光合总量比普通棉田高46．1％。
The population root activity of interplanting cotton decreased significantly at the square and boll stage, with the high value period delayed 15 to 25 days.
套作棉花在蕾铃期群体根系活力降低，且根系活力高值期出现的时间后延15 ~25天，高值持续期明显缩短。
Natural crossing and boll setting of a nucleo-cytoplasmic sterile line of cotton Jin-A were studied.
研究了晋A棉花质核不育系的天然异交与成铃。
Different flowering dates and bolling positions had a significant effect on the individual boll weight, boll period and fiber quality of cotton.
棉花的不同开花期和结铃部位对铃重、铃期和纤维品质有显著影响。
GGR can promote the development of cotton roots like rhizogenic powder. It can also help seedling height, the number of lateral roots, root dry weight, boll weight and boll number per plant.
双吉尔（GGR）象生根粉一样都能促进棉花根系的发育，对增加苗高、侧根数、根干重、铃重、单株结铃数均有一定的促进作用。
Generally, the total boll numbers of multi-stem cotton was significantly increased, but single boll weigh on average was lower.
综合来看，多茎株型单株成铃显著增加，但平均铃重较低。
Generally, the total boll numbers of multi-stem cotton was significantly increased, but single boll weigh on average was lower.
综合来看，多茎株型单株成铃显著增加，但平均铃重较低。
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