农田

Therefore, doing research of the nutrient balance in the loessplateau has its practical signification. Using the long-term rotation and fertilization experiment that disposed in dry land on theloess plateau, the paper has studied nutrients in rainfall import to farmland ecosystem andAmmonia volatilization losses and nutrients disbursal of crop, also estimated the balance ofnutrients in farmland soil.

本文利用设在黄土高原旱地上的长期轮作与施肥试验，主要研究了黄土高原农田生态系统养分的降水带入、作物地上部分的氨挥发损失和作物的养分支出，并进行了 N、P、K 养分平衡评价。

Mechanisation and the consolidation of land plots will boost productivity, meaning that fewer farmers will be needed.

机械化和小块农田的整合将提高生产率，这意味着农业需要的劳动力更少。

To reach the farmhouse the soldiers had to break cover and run across a field.

为了到达那户农家，士兵们不得不从躲藏处出来，并穿过那块农田。

The objectives were to analyze the effects of wind erosion under plough tillage and no-tillage, evaluate changes in soil physical, chemical and biological properties due to different tillage practices, and to discuss the effects of soil properties on wind erosion.

以北方农牧交错带为研究对象，分析了免耕对农田土壤风蚀的影响，评价了不同耕作方式下与土壤风蚀相关的土壤物理、化学和生物学特性的差异。

In order to evaluate the effect of different tillage types on soil moisture,the paper analyses the temporal and spatial variations of soil moisture under plough tillage and no-tillage.

为了揭示农牧交错地区不同农田耕作方式对其水分环境的影响过程及规律，选择翻耕地和免耕地两种土地耕作类型，分析不同耕作方式下土壤水分的时空变化情况。

Results showed that:(1) soil loss from plough tillage was as much as 3~8 times that from no-tillage; the aerodynamic roughness lengths under plough and no-tillage were 0.032, 0.417, respectively.(2) No-tillage soil contained more clay and fine sand in the 0-10cm topsoil layer than the plough tillage soil. In the 0-5 and 5-10cm soil depth, the bulk density, soil hardness and soil moisture were more under no-tillage than plough tillage. Especially, the soil hardness in 0-5, 5-10 and 10-20cm under no-tillage were as much as 4.7, 2.8 and 3.8 times, respectively.

研究结果表明：翻耕农田土壤风蚀量是免耕地的3~8倍，翻耕地和免耕地的地表粗糙度分别为0.032和0.417；与翻耕地相比，免耕地表层0~10cm土壤粘粒和粉粒含量较多；免耕地土层0~5cm和5~10cm的土壤容重、坚实度和土壤水分都大于翻耕地，其中0~5cm、5~10cm和10~20cm土层土壤坚实度分别是翻耕地的4.7、2.8倍和3.8倍。

The factory offered to pay compensation to a handful of families whose plots abutted the factory gates.

榕屏化工厂同意对农田临近工厂门口的几家农户进行赔偿。

The C stock in 0-60 cm soil layer was decreased by 31% after afforested for 5 years, hut increased by 47% and 41% after afforested for 10 and 15 years respectively.

与对照农田相比，5年生杨树人工林0~60cm土壤有机碳储量下降了31%，而10年和5年生杨树人工林土壤有机碳储量分别增加了47%和41%。

The basic farmland protects the policy produces with current agriculture the construction adjust to do not went with should, the farmer have no positive to the agriculture, certain the degree ascends the baffling agricultural development to rush with farmer the amasses a fortune.

基本农田保护政策与当前农业生产结构调整不相适应，农民对农业无积极性，一定程度上阻碍农业的发展和农民奔康致富。

Straw returned to field played a positive role in increasing soil insect communities with the largest contribution, primarily the amounts of individuals and dominant species of macro and meso/micro soil animal, especially Neanuridae and Isotomidae animals individual amounts increased by nearly 10 times.(3) Soil nutrien had a positive correlation with soil bacteria, azotobacter, ammonifying bacteria, cellulose decomposing bacteria and denitrifying bacteria. Straw returned to field could stimulate effective microorganisms growth and population quantity in the soil. The increase of microbe community amount is 15%~44% more than that of CK.(4) Soil nutrien had a positive correlation with soil phosphatase, urease and sucrase activities, and a negative correlation with catalase.

研究发现：(1)长期配施秸秆能提高土壤速效氮、磷、钾含量，平均分别提高15%、48%和22%；(2)配施秸秆对土壤昆虫群落呈正向作用且贡献最大，主要增加了大型、中小型农田土壤动物的个体总数和优势类群数量，尤其是疣跳科和等节跳科动物个体数量增加近10倍；(3)土壤养分与土壤细菌、固氮菌、氨化细菌、纤维分解菌和反硝化细菌呈正相关，秸秆还田激发土壤有益微生物的生长和类群数量，使土壤微生物类群数量比对照增加15%~44%；(4)土壤养分与土壤磷酸酶、脲酶、蔗糖酶活性呈正相关，与过氧化氢酶呈负相关，秸秆还田增强土壤蔗糖酶、磷酸酶和脲酶活性，特别是脲酶和蔗糖酶活性平均提高26.5%。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。