不同土壤水分条件下宁南旱地春小麦覆膜穴播栽培效应研究初报  

Cultivation effect with plastic film mulching and hole sowing of dryland spring wheat under different soil moisture conditions in semiarid area of South Ningxia

作　　者：李梅 贾志宽[1] 蒋骏[1] 

机构地区：[1]西北农林科技大学干旱半干旱研究中心,陕西杨凌712100

出　　处：《干旱地区农业研究》2000年第1期54-59,共6页Agricultural Research in the Arid Areas

基　　金：国家旱农攻关项目!( 96 - 0 0 4 - 0 4 - 0 7)

摘　　要：在宁南旱农试区就不同土壤水分条件下旱地春小麦覆膜穴播栽培效应进行研究 ,结果表明 :地膜覆盖对春小麦生长发育具有明显的促进作用 ,与露地小麦相比 ,覆膜春小麦生育进程提前 ,生育期延长 ,植珠高大健壮 ,其叶面积系数、干物质重都显著提高 ;覆膜可使春小麦单位面积穗数、穗粒数、千粒重显著增加 ,产量增加幅度达 30 .2 3%～ 45.89% ,同一水分处理 ,覆膜与露地春小麦耗水差异不大 ,但覆膜春小麦 WUE显著提高 ,增幅达 49.53% ;覆膜栽培可有效抑制农田水分的无效蒸发 ,具有明显的抗旱增产作用。In the backing of experiment farm in the south Ningxia cultivation effect of plastic mulching and hole sowing of dryland spring wheat under different soil moisture condition has been studied. As is shown in this paper compared with that uncovered, the growth and development of the covered spring wheat has obvious advances for example, time of emergence is ahead, its growing time is prolonged, the plant is taller and sturdier, and its Leaf Area Index (LAI), dry material weight of over ground plant parts are all strikingly enhanced, it has the function of obvious drought resistance and increasing yield; Spike number per unit area, kernel number per spike, thousand kernel weight of spring wheat are also obviously enhanced by covering with plastic film, the range of which is from 30.23% to 45.89%. In the same moisture treatment, there is no notable difference between the mulched and exposed in its water consumption, but the WUE of the covered is obviously increased, as much as 49.53%. Cultivation by covering with plastic film can effectively restrain the invalid evaporation of soil moisture, especially before the period of jointing.

关 键 词：旱地春小麦 覆膜穴播 土壤水分 生长发育 产量 

分 类 号：S512.1[农业科学—作物学] S316