草坪

According to the quantity occurred of the pests and the degree of the lawn destroyed, we have known the dominant species of the pest in the lawn. and the reason and dynamic of these species have been analyzed. It is important to the pests management of the Trifolium repens in the level of community.

同时，根据害虫的发生数量和对草坪的危害程度，从群落的角度确定了白三叶草坪上害虫的优势种，并分析了这些优势种产生的原因和动态，为白三叶草坪在群落水平上进行综合治理提供了重要的依据。

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、剪股颖和黑麦草的含硅量，分别为209％、295％、285％；积累量分别提高了240％、364％、355％；施硅对草坪草狗牙根、剪股颖和黑麦草的干物质积累有促进趋势；在干旱的条件下，施硅抑制了草坪草的叶相对含水量的降低，延迟了叶片萎焉的时间，在干旱胁华中农业大学2001级时一艳丽硕士学位论文迫第n天，与正CK相比，施硅后狗牙根、剪股颖和黑麦草分别只降低了 14%；16%，32%。；施硅增加了狗牙根、剪股颖、黑麦草在干旱条件下脯氨酸的含量，增强了渗透调节能力，在干旱施硅的条件下，与正51相比，在干旱胁迫第11天，狗牙根、剪股颖和黑麦草脯氨酸的含量分别增加了2叨%、199%、473%；施硅减少了狗牙根和黑麦草的蒸散量在正常浇水的条件下，与正CK相比，第11天狗牙根和黑麦草的蒸散量分别降低了21%、吕%；在干旱的条件下，与干CK相比，在干旱胁迫的第11天，狗牙根和黑麦草的蒸散量分别降低了17%、5%。

In better management lawn community Geranium sibiricum, Potentilla anserine and Leymus secalinus are the dominant weeds all the time and Geranium sibiricum is the most dominant weed.The regular pattern of Shannon-Weinor index of turf weeds in three different management lawn communities is that in worse community maximum Shannon-Weinor index appears in spring and fall but in better community is in late-summer and primary-fall.

三种管理水平不同的草坪群落中杂草的多样性指数变化规律是，管理水平较差和一般的草坪群落中，杂草的香农-威纳指数的最大值出现在春季和秋末；管理水平较好的草坪群落中，杂草的香农-威纳指数的最大值出现在夏末秋初。

BIOLIVE is a bio-remover of Lichen, which is developed by environmental specialist and microbiologist according to lichen's growth behavior. Besides its good effect, BIOLIVE also can overcome the disadvantage of using calcareousness or copper remover, which injures the lawn and soil.

拜力洁是环境专家、土壤专家与微生物专家针对草坪中青苔的附着习性研制的青苔生物消除剂，既能有效去除草坪中的青苔，又能克服使用石灰或铜制剂杀青苔伤及草坪和破坏土壤理化性质的缺点。

There are 69 species turf weeds in worse management lawn community, 38 species in general and 37 species in better. In worse management lawn community Viola prionantha and Digitaria ischaemum are dominant weeds.

管理水平较差的草坪群落中有杂草69种；管理水平一般的草坪群落中有杂草38种；管理水平较好的草坪群落中有杂草37种。

Variation of important value of dominant weed is that in spring and fall the dominant weed is Viola prionantha while in summer it is Digitaria ischaemum. In general management lawn community it is Leymus secalinus that is the dominant weed in spring and fall and Digitaria ischaemum in summer.

管理水平较差的草坪群落中，春季和秋季是早开堇菜占优势，夏季是止血马唐占优势；管理水平一般的草坪群落中春、秋季节是赖草占优势，夏季也是止血马唐占优势；管理水平较好的草坪群落中整个生长季是鼠掌老鹳草、鹅绒委陵菜、赖草占优势，且以鼠掌老鹳草的优势度最大。

That's because our quasi-public unhedged front yards all run together -- in a sense, the White House lawn is contiguous with every other lawn in the land -- and the laggard who neglects to tend his lawn spoils the effect for everyone.

那是因为我们的准大众把前院合在一起，在某种意义上，白宫草坪和其他的每一块土地的草坪相连，而且忽略照料自己草坪的落后者掠夺了每一个人的财产。

Through carrying on the research of the light,warm,wet environmental factor to the environment of different lawns,have explained that afforests the ecological effect of the mode and impact on surrounding environment in the campus lawn,in the hope of finding out the law,accumulate more exper...

通过对不同草坪环境进行光、温、湿等环境因子的研究，阐述了校园草坪绿化模式的生态效应及对周围环境的影响，以期找出规律，积累更多经验，为校园生态绿化起到一定的指导借鉴作用，将有利于草坪发展和景观生态设计的园林事业研究的健康发展。

The results showed that soil copper contamination did not significantly affect the leaf growth of Bermuda grass and its influence on root biomass and leaf chlorophyll content in Bermuda grass were also less than that in zoysiagrass.

结果表明：铜污染处理对狗牙根草坪的地上部分叶片生长量的影响不显著，对根系生长量和叶绿素含量的影响也明显小于结缕草；铜污染处理未引起冷季型草坪的叶绿素含量的下降，对高羊茅草坪的密度影响不显著，对叶片生长量的影响也明显小于草地早熟禾和多年生黑麦草，而草地早熟禾虽然叶片生长受到了严重的抑制，但根系生长未受到显著影响，也表现出了对土壤铜污染的一定的耐性。

School lawn more than 600 square meters, the holly hedge around the lawn of the more than 300 meters, the strong growth of evergreen Four Seasons, standing between the green grass of cedar, Ta Song, it was always a school in the spring.

学校有草坪600多平方米，草坪周围的冬青绿篱300多米，生长旺盛四季常青，草坪间矗立了常绿的雪松、塔松，使人感到学校永远是春天。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。