随着高分子聚合物-聚氯乙烯、聚乙烯的产生,塑料薄膜广泛应用于农业。日本及欧美国家于50年代初期应用薄膜覆盖温床获得成功,随后又覆盖小棚及温室也获得良好效果。我国于1955年秋引进聚氯乙烯农用薄膜,首先在北京用于小棚覆盖蔬菜,获得了早熟增产的效果。大棚原是蔬菜生产的专用设备,随着生产的发展大棚的应用越加广泛。当前大棚已用于盆花及切花栽培;果树生产用于栽培葡萄、草莓、西瓜、甜瓜、桃及柑桔等;林业生产用于林木育苗、观赏树木的培养等;养殖业用于养蚕、养鸡、养牛、养猪、鱼及鱼苗等。
n. greenhouse
Objective The aim of the research was to study the intelligent temperature control system in vegetable greenhouse.
目的研究蔬菜大棚智能温度控制系统。
参考来源 - 蔬菜大棚智能温度控制系统应用研究Objective To investigate the clinical and image features of greenhouse farmer’s lung so as to reduce the misdiagnosis rate.
目的探讨大棚作业农民肺(简称大棚肺)的临床特征及影像学特点,减少误诊率。
参考来源 - 大棚肺308例临床特征分析·2,447,543篇论文数据,部分数据来源于NoteExpress
一排排的大棚,有些上面的塑料膜被揭去
他们必须砍树才能盖大棚,这也是耕种的不利条件之一。
One of the disadvantages of their farming is the fact they have to cut trees, because they need a lot of wood to build greenhouses.
他们必须砍树才能盖大棚,这也是耕种的不利条件之一。
One of the disadvantages of their farming is the fact they have to cut trees because they need a lot of wood to build greenhouses.
应用推荐