鹽漬平地 的英文怎麼說
中文拼音 [yánzìpíngde]
鹽漬平地
英文
kavir-
The environmental geological problems existing in the west liaohe plain involve desertification of land, salinization of soil, declining of groundwater level and pollution of groundwater
摘要西遼河平原的環境地質問題主要表現為土地沙漠化、土壤鹽漬化、區域地下水位元下降及地下水污染等。Prevention of soil secondary salinization by turning upland cropland into paddy fields in depressions of the songneng plain
松嫩平原低平易澇地旱改水種稻治澇防止土壤次生鹽漬化技術的研究According to our analysis, the farmers in quzhou are in the second phase, which means they already have enough food and put much more inputs for earning high yield and high income. ( 4 ) the ground water table was getting down, caused by precipitation decreasing, no river water coming due to the upstream reservoir, complete drainage in rainy season and irrigation using groundwater
（ 4 ）自然降水量的降低、上游水庫的攔蓄，使平原失去了獲得水源的機會；內部防洪排瀝體系的完善，致使入滲補充地下水減少；耕地灌溉率的增加，導致農業用水量不斷加大，這些因素共同作用使區域水資源失去平衡，引起地下水位的下降，從而促使鹽漬土表層脫鹽。This paper chooses the indicators of economy and land quality input which has influence on the output, depending on cd - productive function to establish the function between input and output : y : productive forces of the cultivated land f : input of the fertilizer and agricultural chemical i : input of the irrigation l : input of the labor q : input of the land quality a : the level of average management t : the level of changing management a, b, c, d, f : productive elasticity coefficient the factor of the land quality includes texture, content of the organic matter, degree of the pickled, the structure of the soil
本項研究選擇了影響農用地總產出的經濟投入指標和土地質量投入指標，藉助c - d生產函數，建立土地投入產出的函數關系： y = a ? e ~ （ ft ） ? f ~ a ? i ~ b ? l ~ c ? q ~ dy為以土地總產值表示的土地生產力f為化肥和農藥的投入i為灌溉投入，即灌溉所需用的水電費l為勞動力投入（考慮了農業機械投入的修正） q為土地質量投入a為平均管理水平t為變化的管理水平a 、 b 、 c 、 d 、 f分別為各相應生產要素的產出彈性系數其中，土地質量因子包括表土質地（ t人有機質含量矚入鹽漬化程度px土體構型p ）等。他們之間的關系為： q （ a ； xt a 。The study is mainly about the irrigating of song nen plain region and its water - salt sport environment condition and artificial factor etc
摘要主要研究了松嫩平原地區的灌溉方式、土壤水鹽運動狀況、環境條件以及人為因素等，對土壤次生鹽漬化的形成，提出預防與防治具有重要的意義。分享友人