渭北地膜覆盖小麦最佳种植模式及微生境效应研究  

Optimal planting pattern of film mulching wheat and its micro-environmental effects on Weibei dry-land

作　　者：张正茂[1] 王虎全[1] 

机构地区：[1]西北农林科技大学,陕西杨凌712100

出　　处：《干旱地区农业研究》2003年第3期55-60,共6页Agricultural Research in the Arid Areas

摘　　要：以露地小麦为对照,对膜上穴播和膜侧沟播两种模式进行比较研究。两地多年试验结果表明,起垄覆膜沟播模式在小麦生育期具有聚水、保墒、增温、透光等作用,是符合渭北自然条件的旱地小麦高产、稳产最佳模式;其微生境效应,除冬前增温效果没有膜上穴播模式明显外,其它诸如聚水保墒效果、土壤微生物数量、土壤养分吸收以及水分利用效率等均好于膜上穴播模式。Experiments were conducted on Weibei dryland to investigate the effects of hole seeding on plastic film and furrow seeding beside plastic film, compared with unmulched drill seeding. The results showed that furrow seeding beside plastic film was an optimal planting pattern of dryland wheat which was beneficial for waterharvesting, waterconserving, temperature increase and light penetration. Compared with hole seeding, furrow seeding was more effective to improve soil moisture, increase soil microbe, promote soil nutrient absorption and raise water use efficiency. Film mulch may become an important technique to realize high and stable production of dryland wheat and to ensure food security in Weibei area.\;

关 键 词：渭北旱地 地膜覆盖 冬小麦 种植模式 微生境效应 增产机理 

分 类 号：S512.11[农业科学—作物学]