摘要
河北省低平原旱作农区,水旱地插花状分布,水资源日趋紧缺,降水集中造成季节性干旱以及较高的复种指数是当地农业的基本特点。研究表明:早熟品种具有明显地避旱特性;增施肥料能提高水分生产效率;因雨耕作对土壤水分进行调控能确保全苗;开发利用浅层地下水能显著提高粮棉产量。
The basic characteristics in dryland farming in Hebei low plain area are:the random distribution of irrigated and rainfed lands;gradual short supply of irrigationwater;concentrated rainfall causing seasonal droughts;high multiple index,etc. The re-cent studies indicate that early maturing crop varieties can alleviate the droughts;in-creasing fertilizer application can raise water use efficiency;cultivation timely followingrainfall can ensure the full seedlings and regulate soil moisture;and exploiting subsurface water in the shallow layer can considerablly increase the yields of cereal crops andcotton.
出处
《干旱地区农业研究》
CSCD
北大核心
1993年第4期24-28,共5页
Agricultural Research in the Arid Areas
关键词
旱作农业
干旱区高产
栽培
dryland farming
cultivation following rainfall
soil moisture
water use efficiency
countermeasures for stable crop yield
