Taking the well water irrigation as the control(CK),a pot experiment was conducted to clarify the effects of irrigation with mine water(T1 treatment) and soil improvement(T2 treatment) on soil enzyme(urease and sucrase) activity,soil respiration,physiological ecology and grain yield of wheat.The results showed that the long-term mine water irrigation(T1 treatment) obviously reduced the soil respiration and soil enzyme activity,also obviously suppressed plant height,leaf area,chlorophyll content,and the photosynthesis of wheat.So the yield of wheat and related traits were much less than that in CK.But soil improvement through adding dairy manure to soil(T2 treatment) obviously enhanced soil respiration and soil enzyme activity that irrigated by mine water,also improved the wheat physiological ecology,including plant height,leaf area,chlorophyll content,photosynthesis of wheat.And the yield of wheat and related traits were significantly raised.The study had important practical value for using the mine water irrigation and ensuring farmland ecological safety and food production safety.

It is introduced in this paper the way to construct a BOP control network in a large scale fossil fuel power plant to control and monitor various BOP shops real-timely,effectively and uniformly based on the erection process of the BOP control network of Liangcun 2×300MW thermal power plant project in Shijiazhuang of Zhongdiantou group.The BOP control network design principal,network structure,and hardware configuration are discussed thoroughly as well as focus questions in design and erection.

Spike differentiation is important for reproductive organ formation during wheat growth and development,and is a crucial period influencing grain yield.Spike differentiation depends not only on genetic characteristics but also environmental factors such as temperature.In recent years,rising temperatures and extreme weather associated with global climate change have strongly affected agricultural production and systems. Wheat is an important food crop worldwide and is the main crop grown in Henan province.With the aim of assessing the effects of increasing temperature on wheat spike differentiation,a comparative study of wheat spike differentiation in the glasshouse and field was conducted during 2009/2010.The experimental material comprised 'Zhengmai 9023',which is a semi-spring wheat cultivar,and 'Zhoumai 18',which is a semi-winter wheat cultivar.In the field experiment,seeds were sown on 18 October;in the glasshouse experiment,seeds were sown on 1 November(T1),15 November(T2) and 29 November(T3).Spike development was observed with a stereomicroscope from seedling emergence until completion of anther differentiation,and the effects of temperature on spike differentiation were studied. The mean temperature and accumulated temperature above zero tended to be higher in the glasshouse than in the field during the whole growth period.Wheat plants underwent normal spike differentiation and attained maturity in the glasshouse,but the duration of the spike differentiation process was significantly shorter in the glasshouse than in the field(P 0.01).Therefore,the entire growth period was also shorter in the glasshouse than in the field.The spike differentiation process was accelerated with increasing temperature and accumulated temperature above zero.Compared with the field environment,the spike differentiation stages of significantly shorter duration in the glasshouse were early developmental stages from seedling emergence to the spike elongation,single ridge and double ridge stages.In the glasshouse,with the sowing time delayed(T2 and T3),the duration of spike differentiation was shortened,the onset of each spike differentiation stage was delayed,and the accumulated temperature during the entire spike differentiation period was lower.The duration of spike differentiation under the T1 treatment was significantly longer than that under the T2 treatment(P 0.01). Differences in spike differentiation between the two cultivars were apparent.In this study,the duration of spike differentiation was shorter,and the onset of each developmental stage was earlier,in Zhengmai 9023 compared with those of Zhoumai 18.The effects of temperature on spike differentiation differed between the cultivars.The accumulated temperature during spike differentiation for Zhengmai 9023 was lower than that of Zhoumai 18 sown at the same time.For Zhengmai 9023,high temperature mostly influenced the intermediate developmental stages,namely the double ridge,glume differentiation,and floret differentiation stages.For Zhoumai 18,early and late developmental stages were mainly affected by high temperature,namely the single ridge,double ridge and anther differentiation stages.The influence of accumulated temperature was strongest on the glume differentiation stage in Zhengmai 9023,and on the anther differentiation and double ridge stages in Zhoumai 18.