There are a significant correlation between root length density and yields of cotton at flowering and boll opening stage.

花鈴期、吐絮期各土層棉花根長密度與產(chǎn)量呈顯著的二次相關(guān)關(guān)系亚洲中文字幕无码乱线。

The development of Bt cottons has greatly decreased the yield loss of cotton production caused by cotton boll worm and the utility...

轉(zhuǎn)基因抗蟲棉的研制成功與生產(chǎn)上的廣泛應(yīng)用超碰在线看，帶來了巨大的社會效益與經(jīng)濟效益。

My foot can kick a boll.

我的腳會踢球日韩精品片第7页在线观看视频。

Planting resistant cotton varieties, agricultural and chemical control are important measures of integrated management of cotton boll worm.

本文提出適合江西棉區(qū)推廣應(yīng)用的棉鈴蟲綜合治理措施最新网站毛片，包括種植抗蟲棉、農(nóng)業(yè)防治a毛片网址、化學(xué)防治等黄色视频能看的网址。

It is reported in this study that (1) two high enzyme-yeilding strains TK54 and T12 have been screened from four choleterol-secrecting experimental strains, he supernatant of which have been tested for insecticidal activity with the results showing that cholosterol oxidase can strongly inhibit the vigor of cotton boll worm.

本研究從4個分泌膽固醇氧化酶的實驗菌株中，篩選出兩個高產(chǎn)酶菌株TK54和T12麻豆专区99，用其上清進行殺蟲實驗發(fā)現(xiàn)国产精品嫖娼在线性色av，膽固醇氧化酶具有較強的抑制棉鈴蟲生長的活性。

The spectral and intensity reaction from the cotton boll worm moth were measured by using phototaxis behaviour method, at 14 monochromatic light selected through 340nm to 605nm and white light.

運用室內(nèi)行為實驗方法研究了不同波長單色光和白光刺激的棉鈴蟲HelicoverpaarmigeraH櫣bner）］成蟲趨光欧美性ai、避光反應(yīng)及其與光強度之間的相互關(guān)系久久黄色网址？

The result, which the reproductive system of cotton boll worm(Helicoverpa armigera Hübner ) has been dissect ed in an all round, show that adults of various generations have a remarkable habit of immigration.

通過各代棉鈴蟲雌成蟲生殖系統(tǒng)的解剖研究，表明阿克蘇地區(qū)阿瓦提縣各代棉鈴蟲成蟲具有明顯的遷飛習(xí)性24小时免费看成年女人18级毛片毛片免费。

Trichogramma showed high control efficacy on cotton bollworm eggs after three times of release both in the second and in the third generation bollworm periods. The parasitism on the second and third generation bollworm eggs were 66.0%-70.7% and 76.0%-81.2%, respectively, which were significantly higher than that in the control (second generation: 7.0%-12.3%, third generation: 5.2%-7.4%). And the injury rate of cotton buds and bolls in the second and third generation bollworm were 2.2% and 3.1%, respectively, which were significantly lower than that in the control (second generation:8.5%, third generation: 20.9%). In the second generation bollworm period, number of bollworm eggs or larvae in the Trichogramma released cotton field did not differ to that in the chemically controlled field. But in the third generation, there were significantly less bollworm eggs and larvae in the Trichogramma released cotton field. There were more predators in the Trichogramma released cotton field. These results indicated that cotton boll worm in the transgenic insect-resistant cotton field can he effectively controlled by mass-releasing of T.

結(jié)果發(fā)現(xiàn)：棉鈴蟲卵在棉株不同部位的分布差異較大国产黄A黄色，2代棉鈴蟲卵主要分布在葉正面、葉背面和莖尖谁有免费黄色网站直接看的，3代棉鈴蟲卵主要分布于蕾鈴网站涩涩；在放蜂田，赤眼蜂對棉株不同部位棉鈴蟲卵的寄生率差異較大欧美色综合网站在线看，27777在线视频，3代棉鈴蟲時期對葉正面国产黄色免费在线观看、叫背面、莖尖亚洲精品偷拍第2页、蕾鈴的棉鈴蟲卵寄生率均較高欧美精品黄，對葉柄和莖桿處卵的寄生率較低；并以3代棉鈴蟲時期的寄生率較高www.色色色色；在2国产精品黄色大片，3代棉鈴蟲時期分別連續(xù)釋放3次赤眼蜂，對棉鈴蟲具有很強控制作用66J8影院在线观看，2国产女精品网站91，3代棉鈴蟲卵的被寄生率分別為66.0%~70.7%和76.0%~81.2%，均顯著高于化防田的自然寄生率（2代：7.0%~12.3%人人看人人爱人人操人人做，3代：5.2%~7.4%）3344e国产在线观看；蕾鈴被害率分別為2.2%和3.1%，均顯著低于化防田（2代：8.5%看av网址，3代：20.9%日韩久久精品麻豆出品AV；2代棉鈴蟲時期，放蜂田和化防田的棉鈴蟲卵量和幼蟲數(shù)量差異均不顯著国产jiizz，但3代棉鈴蟲以后美女让我捅，放蜂田棉鈴蟲卵量和幼蟲數(shù)量均顯著低于化防田，且放蜂田的捕食性天敵數(shù)量顯著高于化防田女人毛二片十八A级毛片。

Weak water 3000, I only get poured drinks; herb desolately, I only like my family tree; maple boll opening, I only heard people whisper pillow; rape yellow, I love home alone that yellow faces; flowers Aroma, roadside flowers may not notice, I just love love the body fragrance.

弱水三千国产一级毛片无码aaaaaa，我只取一瓢飲；芳草凄凄超碰人人操人日人人，我獨愛我家的那棵jizzjizzjizz亚洲视频；楓楊吐絮，我只聽枕邊人絮語欧美一级特黄大片aaa；油菜花黃玖玖色精品在线，我獨愛家里的那個黃臉；野花襲人两男一女一级A片免费看，路邊的野花可不能睬晚上网站h欧美，我只愛愛人的體香。

Yu Jie is China Program Advisor for the Heinrich Bll Foundation in Beijing.

博士余杰毛片视频免费观看高清在线，是中國項目顧問日韩国产在线，為Heinrich Boll基金會在北京舉行。