稻田

Efficient method was also taken up with for controlling and mitigating methane emissions from paddy fields.In summary, this study showed the feasibility of using new multi-temporal microwaveRadar ALOS data acquired in key dates during rice growing season to extract paddy ricegrowing area was tested. A modified rice backscatter model was developed on the basis oforiginal radiation transfer model for simulating paddy rice backscattering characeteristics. Themodified model and Genetic Algorithm Optimization Tool were synergized to reversephysical parameters and map rice biomass at spatial scale in the study area. At last, on thebasis of paddy rice planting area and farming practice data, biogeochemical DNDC modelwas utilized to simulate quantitatively estimating methane (CH_4) emission from paddy fieldsand represented some specific mitigation scheme.

综上所述，本研究在以下几方面取得了进展：验证了在水稻主要生长期内获得的多时相ALOS／PALSAR雷达数据提取种植面积的实用性；在原有辐射传输模型基础上进行改进，得到了适用于模拟水稻后向散射系数的一阶散射模型；利用改进的模型和遗传算法优化工具进行水稻结构参数反演，并对研究区开展水稻生物量空间分布制图和估算；利用DNDC模型模拟和定量估算稻田CH_4的排放量，进而提出了具体减排耕作措施。

5Kg of market body weight about 15 days earlier than the control group of partridge sichuan duck nomadizing in the paddy...

这是适于我省发展稻田养鸭业，与水稻收获季节紧密配合，节约用粮，短期内可提供优质肉用仔鸭上市的一个比较理想的经济杂交组合。1984年已在名山县推广20余万只。

The selection of an appropriate winter crop that is beneficial to rice crop and paddy soil is critical to sustainable crop production.

试验结果表明：几种冬季作物均提高了稻田土壤微生物碳、氮含量，黑麦草明显提高了土壤微生物量碳和微生物熵，紫云英明显提高了土壤微生物量氮。

Dynamic process and spatial pattern of the white-backed planthopper, Sogatella furcifera nymphs after they immigrated into the rice were studied to provide a theoretical basis for its integrated control.

研究白背飞虱迁入后其后代若虫在稻田间的聚集与扩散的动态过程和空间分布规律，为综合防治提供理论依据。

Village life is portrayed as sequestered in a bygone age, with farmers trailing water buffalo through postage-stamp paddies and rural labourers trudging home in the twilight from Dickensian factories.

在过去的年代，乡村生活被描述成世外桃源式的生活，农民牵着水牛穿过一块块稻田，黄昏下，乡村工人从狄更斯式的工厂里蹒跚地走回家。

Village life is portrayed as sequestered in a bygone age, with farmers trailing water buffalo through postage-stamp paddies and rural labourers trudging home in the twilight from Dickensian factories.

在过去的年代，乡村生活被描绘成远离尘世，农民赶着水牛，穿过一块块分割整齐的稻田；乡村工人拖着疲惫的身躯，顶着落日余晖，从狄更斯式的工厂里下班回家。

Results show that ammonia emission occurred within the first 6 days after fertilizer application, and it was less after the basal dressing and the first top-dressing than after the second top-dressing-N loss through ammonia emission accounted for 0.4%~12% of the total nitrogen applied for the basal and the first top dressings. However for the second top-dressing the percentage was 5.8%, 9.7%, 25.6%, 15.6%, 11.6% during the 2002 rice season, and 27.4%, 26.2%, 30.0%, 35.1%, 27.6% during the 2003 rice season for Treatments LN, OPT, LP, HP and HN, respectively.

结果表明，稻田氨挥发损失主要发生在施肥后6d内，基肥和第一次追肥后各处理氨挥发量占施氮量的0.4%~11.5%，而第二次追肥后氨挥发损失比例较大，对照、低氮、优化、低磷、高磷和高氮处理的氨挥发在2002年稻季分别占施氮量的5.8%、9.7%、25.6%、15.6%和11.6%，在2003年稻季则分别为27.4%、26.2%、30.0%、35.1%和27.6%。

One day, I pass through the 小港, I saw the green rice plant which tassel will full, The yellow tassels with the green leaves were swinging by the wind, It was composed........

那天路过小港机场区，望见一片绿油油的稻田，稻禾抽出的穗子已近饱满黄穗绿叶迎风摇曳著曼妙的波浪舞姿，那种祥和的动感真教人感动

Weedy rice is one of the most notorious weeds found in rice-planting areas all over the world. It commonly causes reduction of rice yield and affects grain quality.

杂草稻是广泛分布在世界各地稻田中的一种恶性杂草，能降低水稻的产量和质量。

The residues of 20% triazophos EC in rice field water, plant, rice shell and unpolished rice were determined by gas chromatography.

用气相色谱法测定了田间试验中20%三唑磷乳油在稻田水、植株、土壤、稻壳和糙米中的残留。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐