稗

The results of the herbicidal effects study display that 1,4-dioxoquinoxaline formaldehyde-salicylic aldehyde dihydrazone and 1,4-dioxoquinoxaline formaldehyde acetone dihydrazone have obvious herbicidal activity.

研究结果表明1，4-二氧喹喔啉-2-甲醛-水杨醛双腙和1，4-二氧喹喔啉-2-甲醛-丙酮双腙表现较明显的活性，在500mg/L浓度时对稗草的株防效分别为51.3%和55.0%；对油菜株防效较弱，分别只有33.5%和17.5%。

Effects of microorganism and environmental factors on persistence of acetochlor in soils were studied by bioassay using Echinochloa crusgalli.

以稗草为生物测定材料，研究了土壤微生物及环境因子对乙草胺持效性的影响。

Tepraloxydim can be seriously affected by climate, low temperature(4 -10 ) can depress its effect, then in the range of 15 -24 and 20 -30 , the death ratio of Echinochloa crusgalliBeauv is more than 97.5%.

快捕挣受温度影响比较大，在4-10℃的低温条件下，快捕挣作用速度慢，药效差，在15-24℃、20-30℃的两个温度范围内，稗草的死亡率均达到97.5％以上。

And Echinochloa crusgalli L. were studied. Both of the aqueous extract from aerial part and root of T. repens inhibited the germination rate of weed seeds, root activity and respiratory rate, and the activities of superoxide dismutase peroxidase and catalase of germinating seeds; enhanced the activity of peroxidase and the content of malondialdehyde.

结果表明，白三叶草地上部分水浸液和根部水浸液显著抑制苘麻和稗草种子的发芽率，降低了杂草种子萌发过程中超氧化物歧化酶，过氧化氢酶的活性，抑制了杂草种子萌发过程中的呼吸速率，根系活力，明显提高了杂草种子过氧化物酶活性和丙二醛的含量。

And Echinochloa crusgalli L. were studied. The result showed that both of the aqueous extract from aerial part and root of T. repens inhibited the germination rate of weed seeds, root activity and respiratory rate , the activities of superoxide dismutase peroxidase and catalase of germinating seeds, enhanced the activity of peroxidase and the content of malondialdehyde.

结果表明，白三叶草地上部分水浸液和根系分泌物显著抑制苘麻和稗草种子的发芽率，降低了杂草种子萌发过程中超氧化物歧化酶、过氧化氢酶的活性，抑制了杂草种子根系活力，显著提高了杂草种子过氧化物酶活性和丙二醛的含量。

An amide herbicide butachlor treated with its mixture of urea at the emergence of barnyardgrass Echinochloa crus galli

酰胺类除草剂丁草胺+尿素混剂在无芒稗Echinochloa crusgalli

Nowadays there are 53 weed species belong to 24 families in rice field in Shanghai. The main weeds in paddy field are 18 species,such as Sagittaria pygmaea, Ammania baceifera, Echinochloa ausgalli, Monochoria vaginalis.

上海稻田常见杂草有53种，分属24科，其中主要草种有22种，如矮慈菇、鸭舌草、稗草等。

The PPDK gene had been cloned from many plants. The research on its protein structure has not been studied. This paper analyses Echinochloa crusgalli var frumentaceaW.F.Wight's PPDK sequence by bioinformatics and model its three-dimension structure.Sequence analysis of Pyruvate orthophosphate dikinase from was conducted by bioinformatics tools such as DNAstar,Vector NTI and SignalP etc.

目前已从许多种植物中克隆了其PPDK基因，但是对于其蛋白结构的分析尚未报道，此文通过生物信息学方法对家稗PPDK的序列进行了分析，并对其三维结构进行了建模分析；利用DNASTAR、Vector NTI 9、SignalP等生物信息学平台对Echinochloa crusgalli var frumentaceaRoxb。

Aqueous extract of cotton has allelopathic effect on Raphanus sativus, Brassica campestris, Lactuca indica, Brassica campestris, Echinochloa crusgall, Setaria viridis and Abutilon theophrasti and its inhibition effect gradually strengthens with increasing concentration. Aqueous extracts from stems, leaves and roots of cotton inhibit or accelerate seed germination and seedling growth, and activity of enzyme of seedling root of cotton. While aqueous extracts from stems and leaves of cotton are 0.02 gmL^(-1), root length, shoot length, lateral root number and dry weight of cotton respectively increase by 10.3%, 3.1%, 22.9% and 2.4% over the control. The above mentioned indexes are lower than the control by 34.4%, 39.2%, 40.6% and 19.0% respectively as the aqueous extracts are 0.1 gmL^(-1). At the same time, root activity and SOD activity decrease by 38.2% and 36.7%, while POD activity and MDA content increase by 52.3% and 36.5%. Growth indexes of plant receptors increase at low concentrations but decrease at high concentrations of aqueous extracts. The allelopathic effect of aqueous extract of stems and leaves is stronger than that of root.

结果表明：棉花植株水浸提液对萝卜、白菜、莴苣、油菜、稗草、狗尾草、苘麻均具有化感效应，随着作用浓度增加，抑制效应逐渐加强；棉花茎叶和根系水浸提液对棉花种子萌发、幼苗生长、幼苗根系活力、根系酶活性有抑制或促进作用，当茎叶浸提液浓度为0.02 gmL^(-1)时，棉花根长、苗高、侧根数、干重分别比对照增加10.3%、3.1%、22.9%和2.4%，当浓度为0.1 gmL^(-1)时，上述指标与对照相比分别降低34.4%、39.2%、40.6%和19.0%，而根系活力、SOD活性比对照降低38.2%、36.7%，POD活性、MDA含量较对照增加52.3%和36.5%，不同浓度棉花植株水浸提液对棉花生长呈现&低促高抑&的规律，且茎叶浸提液作用效应大于根系浸提液。

At 0.75 and 1.50L/ha, quizalofop-p-tefuryl exhibited good control of grass weeds as Echinochloa colona, E. crus-galli, and Eleusine indica. In the post-emergence screening test, quizalofop-p-tefuryl gave acceptable weed control with adequate crop safety.

综合桃园、台南及高雄区农业改良场之药效试验结果，测试药剂quizalofop-p-tefuryl於禾本科杂草3-6叶时，以每公顷0.75公升及1.50公升全面均匀喷施，皆可有效防除芒稷、牛筋草、及稗草等禾本科杂草，但对阔叶及莎草科杂草之防除效果较差。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。