plastic film mulch 中文意思是什麼

plastic film mulch 解釋
塑料地膜
  • plastic : adj 1 造型的；塑造的；給與形態的。2 可塑的，塑性的，受范的；柔軟的；〈比喻〉溫順的，肯聽話的。3 ...
  • film : n 1 薄層，薄膜；薄霧，輕煙；細絲狀的東西。2 【攝影】感光乳劑，照相軟片，電影膠片；影片。3 〈 pl ...
  • mulch : n. 【林業】林地覆蓋物；護根物；地面覆蓋料。vt. 覆蓋樹根[地面]。
  1. The testing result shows that there is a difference actual seed dropping angle and the one acquired by calculation, therefore, a formula for the calculation of seed dropping angle even closely suited to production practice has been driven out and a theoretical basis for the application of 2bqm - 2 model plastic film mulch pneumatic precision planter in practical production is advanced in this paper

    通過試驗，找出種子的落種位置規律。通過試驗結果分析，找出種子的實際的落種角度和計算的落種角度之間的差別，推導出更適合實際生產中所需要的落種角度，為2bqm - 2型氣吸式精量鋪膜播種機在實際生產中的應用提供了一定的理論基礎。
  2. Results showed that by using straw and plastic film dual mulch in dry - cultivation of rice planting, both of the range of temperature difference and the loss of water in dry - cultivated field of rice were decreased, the soil structure was improved, the soil nutrient contents were increased, the ineffective tillers of rice plant were decreased, the growth and development stage were advanced, the filling stage was extended, the grain per ear and 1 000 grain weight were raised, the grain yield of rice increased obviously

    水稻秸稈+地膜二元覆蓋旱作栽培效應的研究結果表明，秸稈+地膜二元覆蓋旱作稻田土壤變溫幅度降低，水分散失減少，結構改善，養分積累增加；水稻無效分蘗減少，生育轉變提前，灌漿結實期延長，穗大粒多，千粒重高，增產效果顯著。
  3. Parametric optimization of the spiral cylinder of a plastic - film mulch seeder

    地膜播種機螺旋覆土滾筒的參數優化
  4. Computerized simulation of working process of seed metering device for 2bqm - 2 plastic film mulch pneumatic precision planter

    氣吸式膜上精量播種裝置排種過程的模擬研究
  5. The results are as follows : ( 1 ) based on soil temperature data measured at different time in the field, soil temperature characteristics under plastic mulch were analyzed at four locations : the middle, the edge, in - between the plastic film and uncovered spot ; the characteristics of soil temperature profile from 0 to 25cm depth and the correlation of soil temperatures in different soil layers were studied at different time with and without plastic mulch ; on the basis of analyzing temporal and spatial variations of soil temperature in a corn field, the relations between soil temperature and air temperature were established, and a new method that only uses air temperature to predict soil temperature profile at different time is proposed. the predicted results showed good accuracy

    成果如下： （ 1 ）根據大田實測地溫資料，分析了覆膜條件下膜中、膜邊、膜間和揭膜四種處理在早、中、晚三個不同時刻的地溫特徵；分析研究了各觀測時刻覆膜與不覆膜條件下0 25cm剖面地溫的特點及各層地溫間的相關關系；在重點對玉米田地溫時空變化特徵分析的基礎上，首次將覆膜與不覆膜不同時刻觀測的剖面地溫與氣溫建立了聯系，提出了僅根據氣溫資料來預測一日內不同時刻剖面地溫的新方法，預測結果表明其精度較高。
  6. In order to overcome the disadvantage of 2bps - 2 plastic film mulch seeder with watering apparatus that the operation speed is limited and the moisture evaporation loss is great, according to the theoretic analysis of water movement in soil, this paper offers another watering project - hidden watering under film, designs three different types of watering devices, meanwhile conducts test research with different watering devices in different position the change of the soil moisture content

    本課題針對2bps - 2型坐水鋪膜播種機坐水后，土壤水分蒸發損失大和機組作業速度低的突出問題，通過對水在土壤中運動的理論分析，提出了在行間膜下的暗道式施水方案，圍繞此方案設計了三種坐水部件，並就不同坐水部件在不同施水位置施水后，種子帶土壤含水量的變化進行了試驗研究。
  7. The effect of straw and plastic film dual mulch in dry - cultivation of rice planting was studied

    我國覆膜稻栽培研究始於1996年，但迄今都為地膜單元覆蓋。
  8. Abstract : the effect of straw and plastic film dual mulch in dry - cultivation of rice planting was studied

    文摘:我國覆膜稻栽培研究始於1996年，但迄今都為地膜單元覆蓋。
  9. To overcome the restriction of water and heat on agricultural production in northwestern arid and semiarid region, the farming practice of clear plastic film mulch was spread due to its capacity of retaining water and temperature in the winter wheat field in many areas, howeve r soil properties had also were affected significantly in the meantime

    在西北乾旱半乾旱地區，為了克服水熱資源對農業生產的限制，地膜覆蓋的農作措施以其顯著的增溫保墑作用在冬小麥農田得到了大面積的推廣和應用；與此同時，該農作措施下的土壤性質也發生了深刻的變化。
  10. In recent years, such problems as the extension and application of on - film irrigation, reclamation of salinized soils, and prevention of secondary salinization have made it important to study coupled movement of soil water, salt and heat transfer under plastic mulch in arid and semi - arid areas

    近年來覆膜灌溉的推廣應用、鹽堿地開發和改良以及土壤次生鹽堿化防治等問題使得研究西北乾旱-半乾旱地區覆膜條件下土壤水、鹽、熱耦合遷移規律成為重要課題。
  11. Drip irrigation under mul : h is a new irrigation method, as utiliz e the advance of drip irrigation and plastic film cultivation technique. the conditions influenced crop water requirement are changed in drip irrigation under mulch, thus crop water requirement pattern is different from conventional irrigation forms. it is very useful to research field mulched crops water requirement pattern watering with drip irrigation

    膜下滴灌是地膜栽培與普通地表滴灌相結合的產物，在地膜覆蓋和滴灌的綜合效應下，作物的生長與在常規條件下不同，因此影響作物需水量的一些基本條件都發生了變化，對于膜下滴灌作物需水量和作物系數還需要做進一步研究。
  12. The conclusions were as follows : 1. the farming practice of clear plastic film mulch produced significantly the effects on soil physical, chemical and biological properties

    本項研究取得如下主要結論： 1田間條件下，地膜覆蓋可導致土壤水分、溫度、硝態氮含量及土壤nr活性發生顯著變化。
  13. To offer the scientific bases for tracking the n2o sources and sinks processes well and reducing soil n2o discharge flux, effects of the farming practice of clear plastic film mulch on the changes of soil nao discharge flux in the winter wheat field in shannxi guanzhong area were studied by field and incubation experiments

    在此前提下，本丈通過田間和室內模擬試驗，研究了陜西關中地膜覆蓋的農作措施對冬小麥田土壤中n _ 2o排放通量的影響，旨在為大氣中n _ 2o源匯的探索研究和土壤中n _ 2o的農業減排措施的研究提供科學的依據。
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