It is concluded that, first, geochemical data of the surface soils can clearly distinguish two kind of soils, that is, juvenile soils, for example, purple soils, which inherits most geochemical characteristics of the parent rocks or materials, and anthropic soils, the geochemical characteristics of which have been greatly changed as the results of intensive impact from variety of agricultural uses. Second, different soils have typical indicator elements association respectively due to different parent rocks or materials and utilization, such as purple soils, yellow soils (low alkali and alkaline-earth metal contents and pH value), paddy soils (high organic element and heavy metal elements contents) and fluvo-aquic soils (high rock-forming accessory mineral elements contents) and so on. Consequently, it can be suggested that elements association is an important indicator for two key factors (parent materials and anthropic activities) of soil classification. Third, some differences exist between soil genesic classification and result of cluster analysis, because geochemical characteristics of surface soils can not completely represent the foundation applying to soil genesic classification, that is, condition and process of soil-forming, and soil property.

結(jié)果表明：淺層土壤的地球化學(xué)數(shù)據(jù)能較好地用來(lái)區(qū)分兩類(lèi)土壤97碰碰碰无码视频，即紫色土一類(lèi)的幼年土壤（在很大程度上繼承了母巖久久精品小视频、母質(zhì)的地球化學(xué)特征）和受強(qiáng)烈人為活動(dòng)水耕韩国午夜理伦三级2020不卡、早耕熟化的土壤（外來(lái)物質(zhì)的不斷加人顯著地改變了淺層土壤原有的地球化學(xué)性質(zhì)）JIZZ国产丝袜18老师；(2)各類(lèi)土壤因母巖母質(zhì)和利用方式不同国产真实宾馆嫖妓视频播放，各具明顯的標(biāo)志性元素組合特征免费一级性交黄片无码，如紫色土、黃壤（低堿和堿土金屬元素和pH值）国产91资源小视频、水稻土（高有機(jī)元素日韩精品图片观看网址大全下载、肥料元素和重金屬元素）和潮土等，因此电影日本公妇在线观看，這些元素組合是土壤分類(lèi)兩個(gè)要素的重要參照系人人操人人插人人看人人爱；(3)淺層土壤的地球化學(xué)特征不可能完整地體現(xiàn)成土條件、成土過(guò)程和土壤屬性這三個(gè)發(fā)生分類(lèi)依據(jù)超碰首页，因此人人操人人超，聚類(lèi)分析結(jié)果與發(fā)生類(lèi)型之間存在一定的差異。

The results showed that:(1) 5'-nucleotide contents in yeast autolysate was slightly increased by adding RNase frommalted barley roots;(2) higher pH did not improve the 5'-nucleotide contents even in the presence of RNase from malted barleyroots, but at the pH 8.0, the addition of Acalase could increase the final yield, soluble protein contents and 5'-nucleotide inthe presence of RNase from malted barley roots.

酵母核酸酶的pH穩(wěn)定性和溫度穩(wěn)定性均比麥芽根核酸酶的要差下载黄色一级网站视频。這說(shuō)明自溶法生產(chǎn)酵母提取物時(shí)欧美www视频在线观看，即使外加5'-磷酸二酯酶不能有效提高呈味核苷酸的原因并非由于外加的5'-磷酸二酯酶性質(zhì)不穩(wěn)定，而是另有其它原因999久久久免费精品播放。

The absorption of root system was the main sources of nitrogen in the plant.The effects of matrix ventilation on the abaorption,transportion and metabolism of nitrogen in the root system of cucmber were discussed deeply.The results showed that contents of ammonium,nitrate,free amino acids and soluble protein in cucumber roots were higher in G1 treatment.Contents of ammonium,nitrate and free amino acids in cucumber roots were the trend of the dropping after the first rising in F1 treatment,but contents of soluble protein was lower11.03%than that of the control.

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Adding N, P could improve cucumber root activity, increased the absorptionof N, P and Mg, decreased that of K; Adding N improved the contents of Ca,Fe, Mn and Zn in leaves, and adding P accelerated absorption of cucumberroot to Fe. Adding K decreased the contents of N, P in leaves, but increased K,Fe content, contents of Ca, Mn and Zn decreased at the same time.4. Adding the rates and ratio of N, P, and K increased the activity of SOD incucumber leaves and root. The changes of POD activity were complex, maybeP played the more important role.

增加氮、磷的用量和配比有利于增強(qiáng)黃瓜的根系活力欧美性爱网综合，促進(jìn)黃瓜對(duì)氮欧美六九、磷的吸收，減少對(duì)鉀素的吸收国产AV普通话对白国语，提高葉片鎂含量在线观看永久免费A片三皮，增氮提高了葉片中鈣、鐵网页视频在线观看黄、錳和鋅的含量日韩一级电影WWW.COM；增磷促進(jìn)了植株對(duì)鐵的吸收；增鉀降低葉片中氮国产三区女同、磷含量国产在线黄色，增加植株對(duì)鉀的吸收，提高了葉片中鐵的含量精品国产亚洲一区二区三区，但鈣一个人看的免费无码视频网站、錳和鋅的含量降低。4黄色手机黄色网站在线播放。

To study the foxtail millet variations in the chlorophyll contents, soluble protein contents, SOD, CAT activities and MDA contents of the leaves of two foxtail millet varieties, 05-61 and Jilgu 3 from flowering to maturing.

以谷子品種'05-61'和'金谷3號(hào)'為材料，研究不同基因型谷子開(kāi)花至成熟期葉片的葉綠素含量日本,三级黄色片、酶促防御系統(tǒng)的保護(hù)酶SOD女人一级免费视频a、CAT活性和MDA積累量的動(dòng)態(tài)變化規(guī)律。

With the increase of Australian ore fines ratio in sintering mix, FeO and TiO2 contents reduced, SiO2 and Al2O3 contents increased, hematite and glassiness contents risen, which brought about the improvement of sintering bed permeability.

結(jié)果表明：在試驗(yàn)條件下真实国产3p视频，適當(dāng)增加原料中澳礦粉的配比碰人人摸人人爽，燒結(jié)礦中的FeO和TiO2含量降低，而SiO2和Al2O3含量則升高亚洲Aⅴ日韩美欧天堂，赤鐵礦和玻璃質(zhì)含量增加国产另类综合欧美第三十页，燒結(jié)料層的透氣性得到了改善。

The contents of Ni, Au, Mo, W of the deep-seated xenoliths and their host basalts from eastern China are inhomogeneous. The contents of Ni, Au are highest in the mantle-derived xenoliths the contents of Mo, W are highest in the basalts and the mafic granulite, and the leptite and the granitoids, respectively.

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UV-B radiation induced significant changes in the chemical composition of root, stem, and leaf. Under UV-B radiation, the soluble protein, lignin, and fat contents in leaf, lignin content in root, and cellulose and lignin contents in stem were increased, while the starch content in leaf and the soluble sugar, starch, and fat contents in stem were decreased significantly (P.05), compared with the control.

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The contents of organic matter, total nitrogen, phosphorus, iron, manganese, copper, zinc can be increased, and the contents of hydrolizable nitrogen and their forms , Fe-P, Al-P, Ca〓-P, all organic P forms, exchangeable and organic iron, manganese, copper, zinc are increased obviously in long-term application organic manure soil. Not only the contents of soil readily oxidizable carbon, humic acid, fuluic acid, and HA/FA value are increased and Kos value decreased but also the available nitrogen, phosphorus, iron, manganese, copper, zinc are kept more high level in the organic manure soils. Long-term mulching straw has similar role with organic manure for soil nutrient except for decreasing total phosphorus, available P, N and Ca〓-P, but its fertilizer efficiency is not better than organic manure.

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ResultThe best formula of the solid culture medium was ascertained to be castanea spp particle contents 70 g, corn flour contents 35, gypse contents 2 g, white sugar contents 1 g; the best formula of the liquid culture medium have been ascertained to be corn flour 4.2 g/100ml , castanea spp juice 5 g/100ml, dissolve for oxygen condition static culture, not being put into rocking bed.

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