耕地

1Nitrogen,phosphorus,and potassium fertilizer application amounts in Jiangsu province paddyfield in 1995 are 663,221,373 kg/ha,which is 3,2,4 times as much as those of same unitcultivated area in China,and 10,9,23 times as much as chemical nitrogen,phosphorus andpotassium fertilizer application amount in the world.

1995年全省稻田氮磷钾施用量分别为663、221、371公斤/公顷分别是我国同年单位耕地面积的施用量212、99.8、84.9公斤/公顷的3、2、4倍多，是世界单位耕地化学氮磷钾肥用量的10、9、23倍多。

The father added: Tomorrow, we are going to plough the field.

父亲又说："明天我们要耕地，谁想耕地呢"

Reclamation of tidal flat is one of the main ways to get a dynamic balance of the total amount of plowland. With the development of social economy and the increasing demand for plowland, the contradiction between tidal flat reclamation and environment protection becomes more and more outstanding.

滩涂围垦是基础设施建设占用大量耕地情况下江苏省实现耕地总量动态平衡的主要途径之一，随着社会经济的发展和对土地需求量的不断增加，滩涂围垦与海岸带环境保护之间的矛盾日渐突出。

The land utilization governance system as a big reform in land management system and land utilization means will produce a far-reaching influence over plowland protection, crop supply, and the relationship among population, plowlands, crop and environment.

实施土地用途管制制度是中国土地管理制度和利用方式的重大变革，对保护耕地和粮食供应安全以及协调人口、耕地、粮食和环境之间的关系将产生深远影响。

The conclusions show that most of the agricultural land resources are of good quality. However, the dry land and paddy field covering an area of \{17.11\} km\+2 are contaminated seriously heavy metals, which are not fit for growing crops. At the same time, the high\|quality plowland, which i...

定量评价的结果表明，区域农业土地资源中大部分土地资源质量较好，但旱地和水田共有 1 7.1 1km2 的重金属重度污染区，这部分耕地已不适宜种植农作物，同时，适合人类耕作的高质量耕地由于土壤重金属污染减少了近 1 / 3 ，说明贵阳市区进行土壤重金属污染防治具有重要的意义。

Does the plowman plow all day long to sow his seed?

28：24 那耕地为要撒种的，岂是终日耕地呢？

Doth the plowman plow all day to sow? doth he open and break the clods of his ground?

28：24 那耕地为要撒种的，岂是常常耕地呢，岂是常常开垦耙地呢。

Quot;Doth the plowman plow all day to sow?

"那耕地为要撒种的岂是常常耕地呢？"

Doth the plowman plow all day to sow?

"那耕地为要撒种的，岂是常常耕地呢？"

The CCFG is a kind of economical activity with positive externality, its final products offered -the ecological benefits belong to the pure public goods, the nature of the economical compensation is to internalize the externality of the CCFG, so an economical compensation mechanism should be established with the government playing a leading role. The compensation receivers should be not only peasant households but also the county-level authority that performs the project. Besides central government, the compensation payers should still include the provincial-level governments who implement the project, the provincial-level governments of those beneficiary areas of midstream and downstream of basin, international organizations, enterprises and individuals, etc. Multiple channels of raising funds for the program should be worked out and the practice method should be transformed. Thediversified compensation ways should be chosen. In reality, insufficient compensation is the normality, the cost compensation may have more maneuverability. The decision-maker should carry on proper adjustment to the compensation standard, taking into account the factors about the environment conditions, the social-economic conditions, the ecological function of vegetation, etc. and make out different compensation criterions for different areas and different levels. The author puts forward it should be kept the policy of financial subsidies to the farmers who reforest ecological forest for a long term, should prolong the compensation time frameworks to the farmers who reforest economical forest.

本文认为，退耕还林还草是一项具有正外部性的经济活动，其提供的最终产品—生态效益属典型公共产品，经济补偿的实质就是要实现这种外部性的内部化，故应构建以政府为主导的经济补偿机制；补偿对象除了退耕农户以外，还应包括实施退耕还林还草的县级政府；补偿主体除中央政府外，还需将退耕地区省级政府、流域中下游受益地区的省级政府、国际社会、企业和个人等纳入其中；多渠道筹措退耕还林还草补偿投入资金，切实转变经济补偿的运作方式；选择相互协调、相互补充的多样化补偿方式；现实中，不充分补偿是常态，实行成本补偿更具可操作性；应对补偿标准进行适当调整，在综合考虑退耕地区自然环境条件、社会经济状况以及林草植被的生态功能等多种因素的基础上，制定分区分级补偿标准：对还生态林应采取长期补偿政策，对还经济林也要适当延长补偿年限。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。