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1)  full plastic-film mulching on double furrow
全膜双垄沟
1.
The mechanization technology of full plastic-film mulching on double furrow is the application of a kind of combined machine which integrates with the ridging,shaping,fertilizing,film mulching,covering soil,pressing plastic film.
全膜双垄沟机械化技术,是将起垄、整形、施肥、铺膜及膜边覆土压膜多道工序集成于一台机具进行联合作业的一项农机化技术。
2)  whole covering on double ridges and planting in catchment furrows
全膜双垄沟播
1.
\'Jin-kai 2\' was used to study the effects of six kinds of planting densities on agronomic traits, filling characteristics, photosynthetic and yield characteristics of maize with whole covering on double ridges and planting in catchment furrows , which can provide high-yielding cultivation theory of maize with whole covering on double ridges and planting in catchment furrows .
以金凯2号玉米为材料,研究了6种种植密度对全膜双垄沟播玉米农艺性状、灌浆特性、光合生理和产量特性等几个方面的影响,旨在为全膜双隆沟播玉米高产栽培提供一定的理论依据。
3)  Fully covered with plastic film on the double ridges/trenches
全膜双垄沟播技术
4)  double ridge mulching
双垄全膜覆盖
1.
Study on corn no-till planting mode of double ridge mulching "one film used for two years" on dryland;
旱地玉米双垄全膜覆盖“一膜用两年”免耕栽培模式研究
5)  Ridge with plastic film mulching-furrow irrigation
垄膜沟灌
6)  Furrow covered with film
垄沟覆膜
补充资料:全氟磺酸离子交换膜
分子式:Rf—SO3
CAS号:

性质:电解食盐水溶解离子膜电解槽所用的膜材料之一。一种强酸型离子交换膜。亲水性好。膜含水率高。膜电阻低。由于膜内固定离子浓度低,对氢氧离子的排斥力小,同时,槽的电流效率仅达80%以上,产品氢氧化钠浓度也低(小于20%)。能置于PH=1的酸性溶液中,电解时化学稳定性好。可向阳极液中加盐酸中和氢氧离子,产品氯气纯度高,含氧量也低(低于0.5%)。Nafion膜是其代表产品。以四氟乙烯同三氧化硫反应生成环状磺内酯,经过重排成为链状磺内酯。再与六氟环氧丙烷反应得离子膜树脂(XR树脂)单体。XR树脂再用热碱皂化,用酸转化成H型XR树脂即得。

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