宁南半干旱地区豌豆农田微集水种植技术研究

在宁南旱作农业区用豌豆进行的田间试验表明：采用微集水种植方式，豌豆耗水量增加９６．５％－１１４．９％，产量提高４８．４％－９０．２％，水分利用效率达４．５５－８．６３ｋｇ／ｍｍ．ｈｍ＾２；处理中窄垄型增产效果优于宽垄型。集水种植技术是提高半干旱地区降水利用率的有效种植方式。

Research on Pea Planting Technique of Micro water Harvesting in Semi arid Area of South Part of Ningxia

The planting technique of micro-vater harvesting includes two parts:water harvesting area and planting area.Thewater harvesting area is a ridge mulched with plastic film,even small rain can easily run down planting area,so soil moisture in planting area can be improved greatly.This technique has been developed in dryland of the south part of Ningxiain order to improve the capability of soil water supplying in planting area,decrease the water stress and increase the water use efficency(WUE).The results of experiment from 1997 to 1998 show that thewater consumption of pea by 96.5%-114.9%,the yield of pea by 48.4%-90.2% compared with CIA.And WUE reaches to 4.55-8.63 kg/mm·hm².Effect of the ridge with 60 cm of width is prior to the ridge with 75 cm wide on improving pea yield.