Partial DNA-A sequence comparison with other geminiviruses showed that G7 were infected with 5 begomoviruses, these viruses were Papaya leaf curl China virus, Ageratum yellow vein china virus, Tomato leaf curl China virus, Euphorbia leaf curl virus and Tobacco leaf curl Yunnan virus.

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It contains quadratic photosynthetic chamber and columned soil fixing body, wherein soil fixing body of canopy leaf chamber bottom set with knob basal portion being corrugation notch, capable of easy inserting amboceptor in soil to form inclosed canopy leaf chamber, amboceptor upper port inosculation with photosynthetic chamber lower wall round opening to make canopy leaf chamber intracavity forming one integral, photosynthetic chamber upper wall sealed by two side glue and photosynthetic film to ensure photosynthetic chamber steady light permeability, photosynthetic chamber sidewall installed one small size fan controlled by external battery and switch, fan capable of rapid making canopy leaf chamber gaseous reaching equalization.

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The above facts indicated that silicon accumulation in the rice leaf sheath inside, the leaf surface and the sclerenchymatous cell, played the physical barrier role, delayed the hypha of sheath blight expansion.5国产综合色视频、Analysing the physiological and biochemical mechanism of the resistance to rice sheath blight improved by silicon application in several respects.(1) After being inoculated with R.solani, O2 and POD activities disordered, CAT activities obviously declined. O2 producingvelocity in 91SP\'s leaves and leaf sheaths of Si+ rice plants were lower than those of Siriceplants, MDA content in leaves and leaf sheaths of Si+ rice plants were lower thanthose of Si- rice plants significantly in three days after inoculating, SOD免费的黄色网站看、POD、CATactivities in leaf sheaths of Si+ rice plants were higher than those of Si- rice plantssignificantly in one day after inoculating, SOD啪啪啪免费视频网站、POD欧美操老女人视频、CAT activities in leaves ofSi-treatment were higher than those of Si- rice plants significantly in three days afterinoculating. O2 producing velocity and MDA content in Lemont\'s leaves and leafsheaths of Si+ rice plants were lower than those of Si- rice plants significantly afterinoculating, and SOD、POD在线观看色污网站、CAT activities of Si+ rice plants were higher than those ofSi- rice plants significantly.

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Leaves began to shape from the end of March until September, and the growth of young leaves terminated in November. In February or March of the next year, the leaves shot out of the ground. Finally, they withered in May. In addition, 4 phases exist in the process of leaf shaping (buttress forming, primordium, straplike leaf and sheath). At first, the leaf primordium shapes the zonary leaf, and then the plaits are formed at the bilateral base of the zonary leaf. Finally, the plaits close and form sheaths.

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Leaves began to shape from the end of March until September, and the growth of young leaves terminated in November. In February or March of the next year, the leaves shot out of the ground. Finally, they withered in May. In addition, 4 phases exist in the process of leaf shaping (buttress forming, primordium, straplike leaf and sheath).At first, the leaf primordium shapes the zonary leaf, and then the plaits are formed at the bilateral base of the zonary leaf. Finally, the plaits close and form sheaths.

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In order to assess the change of triploid populus tomentoza pulp plantation long-term-site productivity, The paper studied on effects of aboveground litterfall, fine root turnover and wet dust precipitation in nutrient cycling of triploid populus tomentoza pulp plantations at different ages,namely 2a国产一级A片AV在线、4a、5a、6a.It studied influence of different factors on decomposition of leaf一a级黄片免费看、tree bark and twig of triploid populus tomentoza to select the operations to accelerate the decomposition and nutrient release. Finally, it studied influence of different intercrops on plantation site productivity and the relationship of intercrops and triploid populus tomentoza to select suitable intercrops. The main results as follows:(1)The aboveground litterfall of triploid populus tomentoza increased along with age from 216.03±59.7gm~(-2) at 3a to 482.38±101.3gm~(-2) at 7a, The N returned by litterfall wasl8.38±2.46kg.hm~(-2)a~-121.63±2.25kg.hm~(-2a~-139.51±4.61kg.hm~(-2a~-138.89±4.89kg.hm~(-2a~(-1) at 3a欧美日韩草草影院在线观看、5a、6a50熟妇、7a respectively. The P returned by litterfall was 5.80±0.62kg.hm~(-2)a~(-1)毛片AA级高清免费视频、8.16±0.94kg.hm~(-2)a~(-1), 11.31±1.33kg.hm~(-2)a~(-1)、11.76±1.37kg.hm~(-2)a~(-1) at 3a男人的天堂视频、5a强奸乱伦AV片、6a、7a respectively. The nutrient returned by fine root turnover increased along with age, too. The N returned by fine root turnover was 3.85±0.41kghm~(-2)a~(-1)黄色网站黄色网址视频、5.22±0.63kghm~(-2)a~(-1),7.62±0.89kghm~(-2)a~(-1),9.17±1.22kghm~(-2)a~(-1) at 3a中文字幕一级限制片、5a、6a欧美天欧美天堂aⅴ在线、7a respectively. The P returned by fine root turnover was 0.73±0.07kghm~(-2)a~(-1)亚洲欧洲综合无码一区二区、1.69±0.09kghm~(-2) a~(-1)、1.92±0.31kghm~(-2)a~(-1)美国一级强奸片、1.96±0.21kghm~(-2)a~(-1) at 3a国产精品青草视频免费播放、5a、6a中文字幕永久在线、7a respectively. The leaf was the principal pathway to return nutrient to soil among litterfall, fine root turnover and wet dust precipitation. The proportion of returned N by leaf was 74.84%国产精品三级经典在线观看、71.96%、78.58%免费观看国产黄页网站、75.03% at 3a人人操人人莫人人干、5a、6a一级A片全网免费观看、7a respectively,The proportion of returned P by leaf was 85.93%粉嫩人妻一区、80.31%、83.04%偷拍一级黄片操操操视频、83.23% at 3a啊啊啊轻点在线观看、5a、6a国产视频福利网站、7a respectively. Therefore, it is important to protect and utilize the leaf in order to maintenance and enhance the long-term-site productivity of triploid populus tomentoza pulp plantation.

本文采取時序研究法在线视频自拍网，以3a、5a一级黄片在线免费看、6a国产精品久久97、7a共4個不同年齡的三倍體毛白楊紙漿林為對象，研究了地上凋落物真人性交A级片播放,、細根周轉无码一级做a爱过程免费不卡片、濕沉降在林分N五月天人人干人人干、P營養(yǎng)元素循環(huán)中的作用及不同年齡林分N、P營養(yǎng)元素循環(huán)的特征看免费的黄色片，以評價三倍體毛白楊紙漿林長期立地生產力的變化欧美精品日韩极品在线视频播放网站；采取網(wǎng)袋法研究了不同因素對落葉、樹皮小视频试看入口、樹枝分解的影響黄色wangzhan，以確定加快其分解、促進養(yǎng)分釋放的措施：同時研究了不同間作物對林地影響一区AV天堂综合、林木與間作物之間關系特黄特色免费全部视频，以選擇能維持立地生產力的合適的間作物種類等內容，得到以下結論：(1)隨著年齡的增加插插一级黄色，三倍體毛白楊地上凋落物的數(shù)量從3a的216.03±59.7gm~(-2)增加到7a的482.38±101.3gm~(-2)操,com，通過凋落物歸還的N分別為：3a時為18.38±2.46kg.hm~(-2)a~(-1)，5a時為21.63±2.25kg.hm~(-2)a~(-1)亚洲中文字幕五码，6a時為39.51±4.61kg.hm~(-2)a~(-1)欧美青年在线va，7a時為38.89±4.89kg.hm~(-2)a~(-1)，歸還的P分別為：3a時為5.80±0.62kg.hm~(-2)a~(-1)美女扒开腿让男人桶爽动态图，5a時為8.16±0.94kg.hm~(-2)a~(-1)婷婷性五月，6a時為11.31±1.33kg.hm~(-2)a~(-1)，7a時為11.76±1.37kg.hm~(-2)a~-1隨著年齡的增加91香蕉国产亚洲一二三区，通過細根周轉歸還的養(yǎng)分也在增加欧美一级在线看片，歸還的N分別為：3a時3.85±0.41kghm~(-2a~(-1)，5a時5.22±0.63kghm~(-2)a~(-1)在线观看国产小视频一区，6a時7.62±0.89kghm~(-2)a~(-1)国产精品久久久久久免费，7a時9.17±1.22kghm~(-2)a~-1歸還的P分別為：3a時0.73±0.07kghm~(-2a~(-1)，5a時1.69±0.09kghm~(-2)a~(-1)天天搞月月爽，6a時1.92±0.31kghm~(-2)a~(-1)欧美乱爽乱视二，7a時1.96±0.21kghm~(-2)a~-1從地上凋落物、細根周轉免费A级在线观看网址、濕沉降三種不同途徑歸還林地養(yǎng)分所占的比例來看欧美性A一区二区，地上凋落物中的落葉是歸還養(yǎng)分主要途徑，年齡在3a欧美乱伦超碰、5a国产AV一区黄色、6a、7a時亚a视频在线，通過落葉歸還的N所占比例分別為74.84%国内精品视频在线观看6、71.96%、78.58%和75.03%国产亚洲成年网址在线观看，歸還的P所占比例分別為85.93%a亚洲男人的天堂黄色美丽网站、80.31%中国免费的一级A片、83.04%和83.23%。

Compared with Zhongza29, yields of super okra leaf and okra leaf hybrids were obviously lower, but semi-Okra leaf hybrids was 1.16% higher in yield of seed cotton and 2.06% in yield of lint cotton, and 10 days earlier in maturation. Semi-Okra leaf cotton hybrid, CLA 17 ZR4, which was made by super Okra leaf sterile line and Zheda strong restorer line, had a 13 % higher yield over CK.

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The physiology characters of the leaf of ear in different periods have been studied It is showed that the water content and protein content,leaf_area and protein weight per square of leaf of ear from silking to 42d after silking all reduce gradually , but dry-weight and leaf -area did not do The correlate analysis showed that the protein content of leaf of ear in different periods and protein- weight per square did not correlate significantly with protein content of seed Dry weight of leaf of ear was ...

研究不同時期穗位葉的部分生理性狀表明：從吐絲期至其后 4 2d ，穗位葉的含水量国产91在线看片网址、單位葉面積97黄色视频在线、蛋白質含量和單位葉面積蛋白質重量均呈現(xiàn)一個逐漸下降的趨勢；穗位葉葉片干重和葉面積基本保持不變日韩成人作爱在线视频观看免费网站。相關分析表明在线能看的毛片，不同時期穗位葉的蛋白質含量、單位葉面積蛋白質重量與子粒蛋白質含量無關国产亚洲精品777777，而吐絲期穗位葉干重和子粒蛋白質含量呈顯著正相關

When the plant N level was below 2%, the leaf starch accumulation kept stable, but the sugar content in leaf and starch content in lower layer leaf increased. When the plant N level was between 2. 0% and 2. 8%, the activity of SPS and leaf soluble sugar content were the greatest, which was favorable to the transportation of the accumulated matter from the leaf to the grain.

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The result indicates that with organic fertilizer and inorganic nitrogen fertilizer can obviously increase the leaf dimension coefficient, enhance the content of chlorophyll and soluble protein, improve the SOD activity of flag leaf, depress the content of MDA, postpone the speed of decrepitude of flag leaf,; The status with high content of chlorophyll and leaf dimension coefficient lasts longer with organic fertilizer than with inorganic nitrogen fertilizer and the flag leaf have longer functioning time; the combination of inorganic nitrogen fertilizer and organic fertilizer can substantially postpone the speed of decrepitude of winter wheat.

在國內持續(xù)時間最長的肥料長期定位（28年）試驗條件下，研究了肥料持續(xù)施用下冬小麥花后葉面積系數(shù)等生理指標的變化亚久久二区污，結果表明施用有機肥国产新网址、氮肥，可明顯增大小麥的葉面積系數(shù)操操操操操，增加葉綠素含量和可溶性蛋白含量性爱视频免费无码，提高旗葉的SOD活性，降低丙二醛的含量超碰国产免费，延緩旗葉的衰老黄色视频管网站；施用有機肥較施用氮肥，葉綠素含量及葉面積系數(shù)持續(xù)高值時間長影音先锋电影网，旗葉有更長的功能期高清无码袜亚洲人妻少妇福利视频；長期氮肥與有機肥配施能顯著延緩小麥衰老午夜在线视频福利网站。