The results suggested that the decomposing substances after cotton stalks returned to soil have autotoxic effect. Cotton seed germination and photosynthesis physiological activities were affected by decomposed substances of cotton stalks.

表明棉花秸稈還田后分解產(chǎn)生的化學(xué)物質(zhì)具有一定的自毒效應(yīng)在线视频青草亚洲，對連作棉花種子萌發(fā)国产九九视频一区二区在线、抗氧化物酶活性和光合生理造成影響国产嫖娼妓院视频网站。

Root activity of eggplant seedling decreased with the concentration of the methanol isolatable components increasing. Autotoxic substances in the methanol isolatable fraction suppressed the absorption of NO〓, PO〓, K〓, Mg〓 and Ca〓, implying the inhibition effect of the substances on ion uptake was one of the important mechanisms in allelopathy.

茄子幼苗的根系活力隨水提物中醇溶性組分濃度的增加而降低98精品视频在线，同時(shí)植株對NO〓午夜a一级毛片视频网站在线免费观看、PO〓亚洲免费视频在线播放、K〓、Mg〓老熟妇伦乱一区二区、Ca〓等離子的吸收受阻激情性爱国内自拍，因此抑制離子吸收是水提物中自毒物質(zhì)的重要效應(yīng)之一。

The watermelons, the citrullus lamtus or the stems and leaves thereof are taken as raw materials, and the extracting process comprises the following steps: firstly, the raw materials are washed clean and broken to separate the watermelon peel from the watermelon pulp for respectively extracting juice; the two juices are mixed, and micro-filtration and ultra-filtration are carried out to remove insoluble substances and macromolecular substances; and then reverse osmosis and nano-filtration are carried out to obtain the filtrate; the pH value of the filtrate is regulated and then a macroporous strong acid cation exchange resin column is added; and then ammonia water is taken as an eluant for isocratic elution; the eluent obtained is decompressed, distilled, deaminized, discolored, condensed and crystallized to obtain a white crystalline product of the natural L-citrulline extracted from the watermelons.

本發(fā)明方法以西瓜免费av黄色录像免费的黄色录像、打瓜或者其莖葉為原料视频一区二区男人的天堂国产大片免费，其過程為：首先將原料清洗干凈，破碎后將西瓜皮西瓜瓤分開自拍偷拍亚洲精品，分別進(jìn)行榨汁一级aa片视频；所得汁液合并，經(jīng)過微濾和超濾除去不容物和大分子物質(zhì)国产日韩欧美主播；然后再經(jīng)反滲透和納濾過濾欧美大片免费网站黄；透過液調(diào)節(jié)pH值后通入大孔型強(qiáng)酸性陽離子交換樹脂柱；然后以氨水做洗脫劑進(jìn)行等度洗脫免费观看色视频网站；將洗脫液減壓蒸餾脫氨小www久久久，脫色黄色网站男人天堂，濃縮結(jié)晶，得到西瓜提取天然L-瓜氨酸白色結(jié)晶產(chǎn)品亚洲欧美裸体一级播放。

The major secondary metabolic products of all Chinese Cladonia species were determined by mean of thin-layer chromatography . Nineteen lichen substances are reported and the combination of these substances is used as one of the taxonomic characters.

用薄層色譜法測定了中國石蕊屬地衣所有種類的次生代謝產(chǎn)物爽到高潮嗷嗷嗷叫视频软件，共測出19種地衣物質(zhì)并將其在不同種中的不同組合或是否存在作為分類特征之一。

Horny layer is the outmost layer of epidermis, its thickness is decided by different parts of human body, it's about 0.02mm at the thinnest parts, and 0.5mm at the thickest. It is made up of 5-10 layers of enucleated cornified cells that contains keratin and horny fat, which has the capability of resisting weak acids and weak bases , they array closely and become a natural barrier to moisture content and some chemical substances, so as to prevent the water logging of bodily fluids and endosmose of chemical substances.

角質(zhì)層是表皮的最外層自拍女生裸体自慰，其厚度依身體部位的不同而定国产专区双飞，最薄處約0.02mm，最厚處約0.5mm由5-10層含有角蛋白和角質(zhì)脂肪的無核角化細(xì)胞組成99reav.，角質(zhì)層細(xì)胞有抵抗弱酸弱堿的能力无码毛片视频在线看，角質(zhì)層細(xì)胞排列緊密，對水分及一些化學(xué)物質(zhì)有天然屏障作用国产av精选久久久，因而可以阻止體內(nèi)液體的水滲和化學(xué)物質(zhì)的內(nèi)滲人人干人人操黄色。

In addition, rapeseed oil contains large amounts of erucic acid and substances such as mustard glycosides is generally believed that these substances detrimental to human growth and development.

此外，菜籽油含有芥子甙等的芥酸和大量的物質(zhì)无码日韩精品一区二区不卡，一般認(rèn)為這些物質(zhì)對人體有害的增長和發(fā)展欧美爱爱视频一区二区。

The fragrance substances inpumpkins were primary esters, aldehydes, terpenoids and volatile acid et al. The most of flavor substances were easy evaporable.

構(gòu)成南瓜香氣的香味物質(zhì)成分主要是酯類、醛類看h片的网站、萜類亚洲欧美日韩色图、醇類、酮類及揮發(fā)酸等免费看的国产区视频，絕大部分風(fēng)味物質(zhì)含量低男女无遮挡性爱视频，又易揮發(fā)。

Isoflavonoids are a kind of substances in leguminous plants which have biological activity and faintish estrogenic activity. Daidzein is one of the most classes in these substances.

異黃酮類化合物是一種存在于豆科植物中的生物活性物質(zhì)波多野结衣性爱视频，具有較弱的雌激素樣活性2020精品极品国产色在观看，而大豆黃酮是此類化合物中存在較廣、近年來研究也較多的一種舔美女屁眼的视频一区二区。

Fourteen sediment samples with different content of Fe〓O〓 were collected from lower reach of the Liao River in China. The photodegradation of γ-hexachlorocyclohexane on the sediment surfaces was investigated to observe the effects of Fe〓O〓 and other photoinducable substances, such as TiO〓 and organic substances, on photodegradation of γ-HCH.

從遼河新民段采集了14種具有不同含量的Fe〓O〓的天然沉積物Xxxxxav视频，為了探討沉積物中Fe〓O〓和其它具有光誘導(dǎo)和光催化能力的物質(zhì)如TiO〓和有機(jī)質(zhì)成分對沉積物表面上的林丹的光解的影響，研究了γ-HCH在這些沉積物表面上的光解動(dòng)力學(xué)xigouqi.com。

Both sediment and soil are formed by hypergenesis and are important receivers of the polluted substances in environment. However, they respectively come from different substance sources and receive different polluted substances.

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