Beijingensis under three droughttreatments, normal, moderate and severe stresses. The results showed:(1) the canker disease ofboth cultivars was serious gradually with increased drought;(2) the bark tissue cells sufferedplasmolysis, more evident with the severity of drought stress;(3) under the drought andinoculation with B. dothidea, cells of two cultivars damaged at different degree, mailyrepresented in the changes of organelles, such as chloroplast swollen and distorted, number ofmitochondria increased and membrane system indistinct; then organelles suffered furtherdamagement with inoculation time, thinned mitochondrias stroma, decreased cristae, crumpledand partly broken membrane of chloroplasts with stroma exosmosis. At last, the chloroplastspartly disorganized;(4) the hyphae growed mainly intercellular in resistant cultivar and notonly intercellular but also intracellular in susceptible cultivar, which directly caused thenecrosis of cells;(5) under the severe drought, the damage of cells enhanced the infection ofpathogen and drought and pathogen stressed together and promoted the disease development;the damage from pathogen on cells was more serious than that from drought.

結(jié)果顯示：(1)隨著干旱脅迫程度的增加日韩美女观看成人片在线播放网站，2種楊樹(shù)潰瘍病害發(fā)生漸趨嚴(yán)重；(2)干旱脅迫下超碰在线观看播放，楊樹(shù)樹(shù)皮組織細(xì)胞發(fā)生質(zhì)壁分離麻豆强奸女上司视频，并隨脅迫程度的增加而嚴(yán)重；(3)干旱脅迫下接種病原菌特级肏屄视频，2種楊樹(shù)細(xì)胞發(fā)生不同程度的損傷456亚洲人成国产电影，主要表現(xiàn)為細(xì)胞器發(fā)生較大變化，如出現(xiàn)葉綠體腫脹變形偷窥自拍欧美色图、線粒體數(shù)量增多色欲性爱欧美性爱，質(zhì)膜模糊不清等現(xiàn)象；隨接種時(shí)間的延長(zhǎng)免费黄色网络，細(xì)胞器受到進(jìn)一步損傷亚洲男人的天堂在线网址，葉綠體被膜折皺，嚴(yán)重時(shí)局部破裂男女gif出入抽搐动态图，基質(zhì)外滲日韩亚洲人成在线综合日本，并部分最終解體；(4)毛白楊中的菌絲主要在細(xì)胞間隙中穿行在线免费观看搞黄网站，而北京楊的菌絲除在細(xì)胞間隙中生長(zhǎng)之外色本土激情自拍，侵入細(xì)胞內(nèi)部也較多，直接導(dǎo)致細(xì)胞的解體AV免费羞羞漫画在线观看真人；(5)干旱脅迫下細(xì)胞的損傷促進(jìn)了病原菌的侵染大陆精品偷拍二区，干旱和病原菌的雙重脅迫加劇了病害的發(fā)生程度，并且病原菌侵染對(duì)細(xì)胞的破壞程度大于水分脅迫一级大鸡吧毛片视频。

And the average WDI for every month was calculated from 60 decades WDI and the drought frequency for every month was obtained with a drought criterion. Results showed that: in spring, North-western China, Northern China and Southern China have a higher drought frequency; in May to August, the region that has a higher drought frequency focus on North-western China and Northern China; from September to December, North-western China, Northern China, center China and Sichuan basin has a higher drought frequency (6) The relationship between average WDI for all the 720 decades in 20 years and average precipitation was analysed and was used to regionalize drought in China.

5分析我國(guó)近20年干旱發(fā)生的時(shí)空分布特征：利用1982-2001年NOAAAVHRR8km數(shù)據(jù)集99国产色视频大全，計(jì)算了20年來(lái)我國(guó)各旬干旱空間分布，并根據(jù)一定的干旱發(fā)生判斷標(biāo)準(zhǔn)欧美姓爱一二三四区，統(tǒng)計(jì)我國(guó)不同地區(qū)在各月相發(fā)生干旱的頻率和各月份平均WDIav不卡综合网站在线，初步分析我國(guó)干旱發(fā)生的時(shí)空格局，結(jié)果表明：在春季欧美三级性生活视频，西北地區(qū)99riav10、華北平原和華南大部分地區(qū)的干旱發(fā)生頻率都比較高；在5-8月份狠狠婷婷综合久久久久久，高頻率干旱發(fā)生地區(qū)就主要集中在西北和華北平原地區(qū)国产资源在线看；9-12月份干旱發(fā)生高頻率地區(qū)在主要在西北、華北九九精品无码、華中和四川盆地等地黄色视频插插插。

Using different concentrations of PEG solution simulated drought stress, measured PB86, PR107, RRIM600 and GT1 rubber tree seedling leaves relative water content, the relative conductivity, malondialdehyde, soluble sugar content, superoxide dismutase, 8 physiological indicators, and their changes in the law, and using principal component analysis, membership function analysis, correlation analysis grey mathematical statistical methods, such as the evaluation of four strains of rubber tree seedlings and with the drought resistance the relevance of indicators; at the same time analysing the use of hypertonic solution screening rubber tree seeds and the drought resistance of different rootstocks on 7-33-97 budding seedlings of the impact of drought that rubber tree planting material and rootstocks drought assessment, and provide a theoretical basis choice.

利用不同濃度的PEG溶液模擬干旱脅迫，測(cè)定了PB86欧美性爱一级特黄片、PR107在线观看Www.、RRIM600和GT1橡膠樹(shù)實(shí)生苗葉片相對(duì)含水量欧美国产黄色一级、相對(duì)電導(dǎo)率、丙二醛玖色综合、可溶性糖含量又粗又爽的视频免费、超氧化物歧化酶等8項(xiàng)生理指標(biāo)，研究了它們的變化規(guī)律黄色轻点疼视频网站，并利用主成分分析国产真人无遮挡免费网站、隸屬函數(shù)分析、灰色關(guān)聯(lián)分析等數(shù)理統(tǒng)計(jì)方法評(píng)價(jià)了4個(gè)品系橡膠樹(shù)實(shí)生苗的抗旱性及其與各指標(biāo)的相關(guān)性欧美一级大片肏屄；同時(shí)分析了利用高滲溶液篩選的橡膠樹(shù)種子的抗旱性以及不同砧木對(duì)熱研7－33－97芽接苗抗旱性的影響制服自拍国内日韩视频，以為橡膠樹(shù)抗旱砧木和種植材料的評(píng)價(jià)、選擇提供理論依據(jù)老熟妇一级毛片免费高清。

The eco-physiological characteristics of drought endurance of Pinus sylvestris var.mongolica were studied under different climatic regions, soil water and leaf water condition.Furthemore,the response and adaptability of trees to water stress was done.The below showed the results. 1 The parameters of drought endurance of P. sylvestris var. mongolica was measure and studied by PV technology in the subhumid, semiarid and arid regions The results indicated the osmotic potentials at water saturation condition and at the initial loss turgor decreased as the climatic drought degree increased,and related linearly with the climatic moisture index.It was proved that the drought endurance of P. sylvetris var. mongolica was varible and the elevation of the osmotic adjust capability was a main way to the adaptation of trees to the drought climatic environment.

本文研究了樟子松(Pinus sylvestris var.mongolica)的主要耐旱生理生態(tài)特征在不同地區(qū)超碰在线一、不同土壤水分狀況和葉水分狀況下的變化，進(jìn)而研究了樟子松對(duì)水分脅迫的反應(yīng)和適應(yīng)欧美网站专区，結(jié)果如下： 1 應(yīng)用 PV 技術(shù)對(duì)半濕潤(rùn)區(qū)jizzjizz35、半干旱區(qū)和干旱區(qū)樟子松耐旱性指標(biāo)測(cè)定研究指出，水飽和總體滲透勢(shì)和初始失膨點(diǎn)總體滲透勢(shì)隨著氣候干旱程度增加而增加性感美女黄污被操黄污网站在线观看，與氣候濕度指標(biāo)呈直線相關(guān)变态调教一区二区三区女同，證明了樟子松屬于耐旱性可變的樹(shù)種，滲透調(diào)節(jié)能力增加是其對(duì)干旱氣候適應(yīng)的主要途徑黄色影院欧美日韩。

Pereme , separately are 209%,295%,285%; the increasing of accumulating amount separately are 209%,295%,285%; The use of silicon has a tread to rise dry weight of Bermudagrass ,Agrostis Lolium. Pereme ; Under the drought condition , the use of silicon suppressed the reducing of the relative water content of leaf in turfgrass , delaying the time of wither , stress for the 11th day in the drought .compared with water normally and not using silicon ,after use silicon, the RWC of Bermudagrass , Agrostis Lolium. Pereme only separately depressed 14%,16%,32%; Under the drought condition ,the use of silicon can increased the content of proline of Bermudagrass ,Agrostis Lolium. Pereme, stress for the 11th day in the drought and using silicon , compared with water normally and ueing silicon, the content of Pro separately increased 203%,199%,473%;The using of silicon depressing the ET of Bermudagrass and Lolium. Pereme.Under water normally condition, separately depressed 21%,8% at eleven days ;Under drought condition , separately depressed 17%,5%.

施硅增加了草坪草狗牙根美女欧美精品公司、剪股穎和黑麥草的含硅量，分別為209％毛片看片网址、295％www.99riav76、285％；積累量分別提高了240％欧美大片免费看用力操、364％国产精品泄火熟女小草影院、355％；施硅對(duì)草坪草狗牙根国产色欲一精品一aV一免费、剪股穎和黑麥草的干物質(zhì)積累有促進(jìn)趨勢(shì)mmmm网址在线播放；在干旱的條件下，施硅抑制了草坪草的葉相對(duì)含水量的降低广州深圳一级毛片，延遲了葉片萎焉的時(shí)間免费国产乱伦视频，在干旱脅華中農(nóng)業(yè)大學(xué)2001級(jí)時(shí)一艷麗碩士學(xué)位論文迫第n天96视频在线，與正CK相比色哟哟精彩视频一区国产在线，施硅后狗牙根、剪股穎和黑麥草分別只降低了 14%欧洲亚洲熟女一区二区三区；16%操草网站，32%欧美另类人妻制服丝袜。；施硅增加了狗牙根大码老熟女Av毛片免费、剪股穎亚洲欧洲日产国产动漫、黑麥草在干旱條件下脯氨酸的含量，增強(qiáng)了滲透調(diào)節(jié)能力丰满少妇强力进入毛片，在干旱施硅的條件下青久久久国产av，與正51相比，在干旱脅迫第11天亚洲黄性图，狗牙根亚洲色图2、剪股穎和黑麥草脯氨酸的含量分別增加了2叨%、199%国产日本精品三级片、473%97碰碰,巨乳中文,中文字幕欧美精品；施硅減少了狗牙根和黑麥草的蒸散量在正常澆水的條件下，與正CK相比国产日韩欧美区，第11天狗牙根和黑麥草的蒸散量分別降低了21%中文无码天堂一区二区三区、呂%；在干旱的條件下黄色视频免费观看网站，與干CK相比亚洲自拍日韩欧美精品，在干旱脅迫的第11天，狗牙根和黑麥草的蒸散量分別降低了17%6080午夜理论在线毛片、5%欧洲男女交欢视频。

The comprehensive evalucation resulted in a strong drought resistance group including ZXY04P-201、ZXY03P-227激情久久免费视频、ZXY03P-122 and ZX Y04P-136, a weak drought resistance group including ZXY04P-101欧美BB网、ZXY04P-89,ZXY04P-239 and a intermediate group including the others according to the the above indicators. 3. The results of study on drought mechanism for 4 Dactylis glomerata L. under continuously water stress and rewatering show: the water saturation deficit of leaves arose hastily, and ZXY04P-239 changed most obviously while ZXY04P-201 changed only slightly under drought stress. ZXY03P-173 and ZXY04P-201 increased in the relative plasmalemma permeability and the soluble sugar content while thant of ZXY04P-75 and ZXY04P-239 showed the trend of initial increasing, reaching the peak at the 8th day, then decreasing under drought stress.

20份鴨茅種質(zhì)幼苗期抗旱性研究表明，干旱脅迫條件下麻豆福利导航，所有材料的株高J99香蕉视频A片、生物量顯著下降，葉片脯氨酸和可溶性糖作為重要的滲透調(diào)節(jié)物質(zhì)网站黃色毛片，其含量迅速增加91在线精彩视频，質(zhì)膜相對(duì)透性的數(shù)值變大，細(xì)胞膜受傷害程度增大国产黄在线看片免费人成视频，水分飽和虧缺值變大日韩欧美国产三级，植物保水能力變?nèi)酰gCO2濃度增大国产av网站人人网；凈光合速率无码日韩少妇爆乳视频、蒸騰速率、氣孔導(dǎo)度和葉綠素含量等指標(biāo)測(cè)定值減小，通過(guò)20份鴨茅種質(zhì)苗期抗旱性綜合評(píng)價(jià)日韩操逼片，發(fā)現(xiàn)ZXY04P-201久久国产最新在、ZXY03P-227、ZXY03P-122欧美激情大色堂丁香五月、ZXY04P-136屬?gòu)?qiáng)抗旱性材料羞羞事网站免费进入，ZXY04P-101、ZXY04P-89无码区无码区视频网网址、ZXY04P-239屬弱抗旱性材料自拍偷拍av网址，其他屬于中等抗旱性材料。

The article adopted a new filtering-cloud composing technology used to monitoring drought,analyzed the property of Ts—NDVI characteristic space and the TVDI's indicating drought ability, put forward the TVDI compute model, grade standard, and the impact estimation method. The result indicated: 1 the decade-composed data obtained by the maximum surface temperature principle has better ability than the composed data obtained by the maximum NDVI on monitoring drought; 2 in the Ts-NDVI characteristic space,the dry side and the wet side almost are horizontal lines when the NDVI is on the small side, the temperature difference is about 45℃; 3 the TVDI has inequable level on monitoring drought as its value, the less TVDI indicates without drought occurrence, the bigger TVDI shows the drought certainly happened, the unsure drought conclusion mainly comes from the middle TVDI; 4 the monitored results of Sichuan hot-drought in 2006, obtained by the remote sensing and by the climate index, are basically consistent, the estimating error on the bearing drought crop area and on the drinking trouble population is within 10%.

采用了干旱監(jiān)測(cè)合成濾云新技術(shù)羞羞的漫画在线看，分析了Ts—NDVI特征空間屬性和TVDI指數(shù)干旱監(jiān)測(cè)能力www交毛片，提出了四川伏旱TVDI計(jì)算模型、分級(jí)標(biāo)準(zhǔn)国产一级AV网站、和影響評(píng)估方法伊人亚洲精品分类视频，結(jié)果表明：1按最大地表溫度原則得到的旬合成數(shù)據(jù)比按最大植被指數(shù)原則得到的旬合成數(shù)據(jù)具有更強(qiáng)的旱情監(jiān)測(cè)能力；2在Ts—NDVI特征空間中當(dāng)NDVI較小時(shí)干濕邊幾乎同為水平直線性交网址亚洲视频，兩者相差約45℃无码中文精品专区一；3TVDI指數(shù)因其大小不同而對(duì)旱情的監(jiān)測(cè)能力也不一樣，較小時(shí)說(shuō)明沒(méi)有干旱發(fā)生一级二级三级特黄片，較大時(shí)則一定有干旱發(fā)生超碰在线观看cao，中間段對(duì)干旱的監(jiān)測(cè)具有不確定性；42006年四川伏旱遙感監(jiān)測(cè)與氣候監(jiān)測(cè)結(jié)果基本一致夜夜视频网，農(nóng)作物受旱面積與飲水困難人口數(shù)估算誤差在10%以內(nèi)国产性乱视频。

As to'Cabemet Sauvignon'and'Queen of Vineyard', which belong to the'West Europe Cultivars Group', no obvious decline of Fv/Fm was found in their potted plants even under severe drought stress. Their photosynthetic abilities also greatly recovered after rewatering, i. e. no serious photodamage was formed in these cultivars under drought stress. Between them, the φPSⅡ of 'Queen of Vineyard'under severe drought stress was much lower than that of'Cabernet Sauvignon', which suggested that the light use efficiency of the former was much lower than the latter under severe drought stress. The potted plants of'Autumn Royal'and'Rizamat' sustained high Fv/Fm and φPSⅡ before moderate drought stress, but seriously declined under severe drought stress, which indicated that these cultivars had a weak resistant ability to extreme drought stress. A hybridized cultivar of Vitis vinifera L. and V. labrusca L.,'Red Double Taste', its Fv/Fm and φPSⅡ expressed mild decline along drought stress grade.φPSⅡ of'Red Double Taste'was the highest among seven cultivars under severe drought stress condition, which might closely connected with its high photorespiration activity. Another new cultivar,'Red Globe', and a rootstock,'1103Paulsen', the Fv/Fm and φPSⅡ of their potted plants declined markedly under slight drought stress, which suggested that they held a weak ability to defend against photoinhibition.

西歐品種群的赤霞珠和葡萄園皇后，其盆栽苗的Fv／Fm直到重度干旱脅迫下仍沒(méi)有明顯的降低男和女的黄色视频xx日，且復(fù)水后光合能力恢復(fù)程度較高免费看女性一级A片图片，即干旱沒(méi)有給這兩個(gè)品種造成嚴(yán)重的光破壞，而兩個(gè)品種之間亚洲中文字幕一区女教师，葡萄園皇后在重度干旱脅迫下的φPSⅡ明顯低于赤霞珠女人被男人操出水来视频免费网站观看，說(shuō)明其光合器官在嚴(yán)重干旱脅迫時(shí)對(duì)光能的利用率較差；新品種皇家秋天和東方品種群的里扎馬特在中度干旱脅迫下仍可維持較高的Fv／Fm和φPSⅡ欧美性交黄片A片，但在重度干旱脅迫下則降低幅度較大日韩一区二区三区免费拍拍，說(shuō)明其抵御極端干旱脅迫的能力較差；歐美雜種紅雙味的Fv／Fm和φPSⅡ隨著干旱脅迫程度的增加呈現(xiàn)平緩的下降趨勢(shì)日本com，而且其φPSⅡ在重度干旱脅迫下是七個(gè)品種中最高的日韩欧美图片，這應(yīng)該與其此時(shí)仍維持較強(qiáng)的光呼吸活性有關(guān)；紅地球和砧木1103Paulsen的Fv／Fm和φPSⅡ在輕度干旱脅迫下就明顯下降18禁点击进入网址免费，表明干旱條件下其抵御光抑制的能力較差日本高清一道本一区二区。

These six species are contrasted with three different phenological types, i.e., an evergreen, Cyclobalanopsis helferiana, two winter-deciduous, Buchanania latifolia and Symplocos racemosa, and three drought-deciduous species, Terminthia paniculata, Wendlandia tinctoria and Woodfordia fruticosa.

這6種植物包括1種常綠植物毛枝青岡欧洲美女A视频一级毛片， 2種冷涼季落葉( WD， winter-deciduous)植物天干果和珠仔樹(shù)亚洲av日av，3種干熱季落葉(DD， drought-deciduous)植物三葉漆午夜操逼视频、紅皮水錦樹(shù)和蝦子花日韩综合中文。

Quenching of chlorophyll fluorescence decreased and Non-photochemical Quenching of chlorophyll fluorescence increased for both alfalfas under drought stress. Generally speaking, qP decreased less and qN increased more in the high drought-resistance alfalfa than in the low drought-resistance alfalfa, suggesting that when under drought stress, the electron transport activity and photosynthetic apparatus was damaged less in the alfalfa with high drought-resistance than in the alfalfa with low drought- resistance.

PSⅡ光化學(xué)淬滅系數(shù)、非光化學(xué)淬滅系數(shù)的變化表現(xiàn)為干旱脅迫下兩種紫花苜蓿qP值降低国产福利亚洲一区二区三区、qN值升高538国产精品视频一区二区三区，總體上抗旱性強(qiáng)的紫花苜蓿qP降低的幅度低且qN升高幅度大，表明抗旱性強(qiáng)的紫花苜蓿PSⅡ反應(yīng)中心電子傳遞活性受到的影響小91中文视频在线观看，光合機(jī)構(gòu)的損傷程度低欧美黄色性交片。