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Animals data base for energy potential estimation model and farmer survey data were used in this study to investigate the estimation of Chinese rural household biogas production. On this basis, the biogas yield, family energy consumption, economic profit, and environment profit were compared between biogas household and non biogas household. The results showed that the average biogas yield of Chinese rural household was 450 m3, under 9 months normal working period annually.

该文利用能值潜力估算动物数据库的模型理念，并结合实地调查数据，探索了2007年中国农村户用沼气池产气量的估算方法，在此基础上对比分析了沼气池建设前后，农户家庭能源消费结构、能源经济支出和生态环境的差异。

Eight sugarbeet varietieswere used to measure the content of potassium,sodium,harmful nitrogen and juice purity in beet root as quality characters,at the same time,sugar content,root yield and sugar yield were measured as major agronomic characters.

李文通过以8个甜菜品种为试材，检测块根中K、Na、有害N含量及纯度，作为主要品质性状，以含糖率、根产量和产糖量作为主要农艺性状，采用灰色关联度分析和优势分析法进行统计分析。

Results showed that there are some differences in purity and yield among those 5 methods. Both benzyl chloride method and proteinase K method have better yield, but the purity of the DNA by CTAB method is better than that of others.

结果表明：五种方法所提的DNA纯度及产率有差别，氯化苄法和蛋白酶K法的产率要高于另外三种方法，但CTAB法所提DNA纯度最高。

Most of water-soluble cyanine dyes have -SO3H and –COOH in their molecules, which will influence the biomolecules' functional characters. A new kind of water-soluble cyanine dyes with several cations in molecules were designed and synthesized, preparation conditions of intermediate and dyes were researched and optimized, the yield of dye is 25%. The novel kind of cyanine dye are water-soluble , spectrum characters was researched , all the dyes were charactered by 1H NMR and TOF-MS, spectrum in different solvent of novel dyes were focused on, one of the kind dyes show higher fluorescence quantum yield than the result reported. Because of several cations in the structure, it is promising when used in DNA assay and other bio-assay field.

大多数水溶性的菁类荧光染料分子结构中都带有-SO3H和-COOH等基团，过多的阴离子的引入容易造成对生物分子的功能属性的影响，本论文设计并合成了分子结构中带有多个正电荷的水溶性的一类新型菁染料，考察并且研究了中间体和染料的合成条件，最终的目标产物产率达到25％，染料通过了质谱和核磁的表征，新型的染料具有良好的水溶性，研究了新染料在多种溶剂的的光谱性质，其中一种染料的在水中的荧光量子产率比文献报道得到了提高，由于富集了正电荷，这类菁染料在DNA标记等生物中有一定应用前景。

Results of path analysis showed that the primary influencing factor to lint cotton yield was bolls per haP_(1-Y=0.8386, single cotton ball weight ranked the secondP_(2-Y=0.4052 and the direct contribution effects of the lint percent was smallest P_(3-Y=0.0875 in yield component factors studied.

4由通经分析表明，在被研究的的三个产量构成因素中，对产量起首要作用的为公顷铃数P_(1-Y)=0.8386，其次为单铃重P_(2-Y)=0.4052，衣分P_(3-Y=0.0875的直接效应最小。

The Bt transgenic varieties with insect-resistance showed the similar trend in both seed cotton yield and lint yield in 2002 and 2003 while they showed significantly difference in fiber characters.

结果表明，3个抗虫棉品种的产量性状年份间表现基本一致，而纤维品质性状差异较大。

The cotton lint yield was correlative with nitrogen concentration in fruit-branch leaf, which would cause the lint yield reduction when it was lower or higher than critical nitrogen value in fruit-branch leaf.

在大田栽培条件下，于江苏南京和河南安阳设置了棉花施氮水平试验，依据Justes的临界氮浓度稀释模型确定方法，研究棉花花后果枝叶临界氮浓度稀释模型及其与棉花产量的关系。

The cultivating models high yield cotton(lint yield 2 250kg·hm -2 )were studied in north Xinjiang,including leaf area index,photosynthetic potential,net photosynthetic rate,canopy apparent photosynthetic rate,canopy respiration rate,accumulation and distribution of dry matter etc.

通过研究提出北疆棉花公顷产2250kg皮棉的栽培生理模式，模式包括叶面积指数、光合势、净同化率、群体光合速率、群体呼吸速率、干物质积累与分配等各项生理指标。

The leaf WUE of millet was increased when root cutting in seedling stage,and only the treatment of I2D of maize increased the leaf WUE; The biomass WUE of millet and maize were increased excepting the root cutting treatments of "TM" and "sl"; At the 80% field capacity, when the root was cutted more seriously and more later,the seed yield WUE of millet were dropped; While at the 50% field capacity, the seed yield WUE of millet was increased when the root cutting is moderate in prophase,and have no reduction of output or increase the production at the same time ,while the benefit of saving water didnt evidently at the later stage root cutting.

苗期伤根处理能够提高谷子叶片WUE，而玉米伤根后仅I2D处理的单叶WUE高于对照；除TM和sl处理外，伤根处理提高了谷子和玉米生物量WUE；在土壤含水量为80%田间持水量时，随着伤根程度的加剧和伤根时间的后移，谷子子粒产量WUE下降，伤根不利于谷子WUE的提高；而在50%田间持水量时，前期伤根量适度的处理在不减产甚至增产的情况下还有助于作物子粒产量WUE的提高，而后期伤根的节水效果并不明显。

The saving-water effect of Radish and Cabbage under PFM and appropriate irrigation,and the drought-resisting of radish seedling which seed was soaked by CaCl_2 were systematicly reseached by field observation and the experiment in door.The main results were summaried as follows:The soil temperature of 0~20cm cultivated layer was increased 3-4.5℃ in early growth period was only 1℃ in late growth period by PFM;there was more water saved up to 20.84mm in 0~60cm soil layer by PFM than no PFM in the early growth period of Radish;the yield and water use efficiency of Radish in L4 were exceeded respectively 10.1% and 21.9% of that contrast, the yield and water use efficiency of Cabbage in G4 were exceeded respectively 8.7% and 26.58% of that contrast, under PFM and appropriate irrigation.

主要研究结果如下：地膜覆盖在植株生长前期耕作层平均可增温3～4.5℃，在生长后期增温幅度减小，仅有1℃左右；地膜覆盖在植株生长前期可有效的保持土壤水分，在萝卜生长前期，使0～60cm土层内多储水20.84mm；在覆膜不灌水充分利用自然降雨的条件下生产萝卜，可比裸地正常灌水萝卜增产10.1%，水分利用效率提高21.9%；覆膜只浇一水生产甘蓝，可比裸地正常灌水生产甘蓝增产8.7%，水分利用效率提高26.58%。

In contrast to the ubiquitous rising-sun-with-rays military flag of the Japanese, Chinese banners and ensigns feature a range of designs.

与遍地都是的太阳军旗不同，中国人的旗帜和徽章设计得各式各样。

From their small corner of Feng's Guangzhou headquarters -- a jumble of pink leashes, squeezable rubber steaks, and plastic doggy Santas for Fido's stocking -- Soleil's designers come up with at least five new products a month.

从Feng 设在广州总部的产品展示柜台上可以看到，Soleil的设计师每月至少设计出5件新产品。