查询词典 cotton

Quantity of systemic insecticides in cotton seeding was analysed at regular intervals, and the effect on cotton aphid control was surveyed.

用涂茎、喷雾和拌种3种方法施药，定时采样测定棉苗中内吸杀虫剂的数量动态及调查对棉蚜的控制作用。

With the results of monitoring the spatial patterns of cotton aphid populations in various stages, there are distinct spatial heterogeneity in the distribution of cotton aphid under large and small scales in different stages.

通过对大尺度和小尺度下不同阶段的棉蚜变异函数模型的拟合，得出大尺度和小尺度棉蚜空间分布在棉蚜种群不同发生阶段具有空间异质性，研究区域内，小尺度下棉蚜种群的空间异质性格局中平均有77.6%是由棉蚜种群内部的空间自相关造成的，而大尺度下这个比例达85%。

The results showed that the effective period on cotton aphid was only 5 days by using spraying method, while cotton seed mixed with a larger dosage of Carbofuran lasted 10 days.

结果表明：喷雾法施药，久效磷在棉苗中对棉蚜的有效控制期为5天；克百威粒剂拌种施药，用药量虽大，但对棉蚜有效控制期仅为10天；涂茎法施药，药剂用量少，棉苗中药剂浓度高，对棉蚜的有效控制期可达12天以上。

The year trend of cotton aphid could be simulated with a three cubed polynomial. Furthermore, Cotton's year periodicity could be divided into two periodicities, front 55 d first periodicity, the other latter 128 d, and a new periodicity's function was also given with new phase angle.

棉蚜种群数量的趋势性曲线可以用一个多项式来拟合；棉蚜的在一年之内的周期可以分为两段：前55d可看作一个周期，后128d可看作一个周期，并根据周期相角重新给出棉蚜种群数量的周期函数。

The selective behaviour, fitness, cause formation and population differentation of the cotton aphid''s host biotype were studied on this project. The results showed that the cotton and cumbrits biotype aphid were existed in natural population in Nanjing .

本项目研究了南京地区棉蚜对寄主的选择与适应性、寄主专化型的成因、寄主专化型蚜在DNA水平上的多态性及棉蚜迁飞特性的种群分化、迁飞型种群的遗传响应与杂交遗传。

Simian3 and Shiyuan321 as control. It showed that both GK12 and SGK321 had no significant impacts on natural control efficacy of the biological and non-biological death factors of cotton aphids. Except for the factor of natural death and others, predation was the key factor affecting population dynamics of cotton aphid. Rain ranked the second, parasitism by insects and pathogens had weak control efficacy.

与常规棉相比，单，双价抗虫棉对天敌捕食和寄生，病原物，风雨等生物和非生物因素对棉蚜种群的自然控制作用均未产生显著影响；各因素中，除自然死亡及未知因素死亡外，天敌捕食对棉蚜自然种群的控制作用最强，风雨的作用次之，天敌寄生和病原物的作用则较弱。

You can't pick very much cotton,In them old cotton field back home.

这是实情，可我怎么也想不出令人满意的原因。

The results also indicated that the dry matter distribution and transfer in cotton boll change regularly with the plant time and the cotton node.

棉铃内部的干物质分配、运输转移随时间及节位的变化呈现出有规律的变化。

Northern blot analysis showed that ltpp was preferentially expressed in the cotton fiber (10 dpa), and only very weak expression could be detected in the cotton boll and flower.

Northern杂交显示，该基因主要在棉花纤维中表达，在棉花铃壳和花中，检测到较弱的信号。

Therefore, it is of great significance to increase cotton production by choosing a satisfied cotton variety of more boll setting, low fall off rate, more three-boils and appropriate height.

因此，选择结铃数多，脱落率低、三桃数量高、株高适宜的品种对提高棉花产量具有重要意义。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。