摘要
在年降雨量240 mm的靖远县若笠乡曹岘村,以饲料玉米富试0601为栽培作物,进行秋季全膜双垄沟播栽培、春季顶凌全膜双垄沟播栽培、播前全膜双垄沟播栽培、半膜平铺和不覆膜5种栽培模式试验,分别测定地表5 cm、10 cm、15 cm、20 cm的土层地温,以探索全膜双垄沟播栽培技术对土壤温度的影响。结果表明,在玉米生长的每一个生育期,不同土壤深度的地温和有效积温均是秋季全膜双垄沟播栽培>春季顶凌全膜双垄沟播栽培>播前全膜双垄沟播栽培>半膜平铺>不覆膜。并且秋季全膜双垄沟播栽培、春季顶凌全膜双垄沟播栽培、播前全膜双垄沟播栽培、半膜平铺的有效积温均能满足玉米正常生长所需的积温而不覆膜的有效积温则不能满足,这导致不覆膜饲料玉米难以成熟,产量低下,667m2产籽粒仅130.95 kg,而秋季全膜双垄沟播栽培的饲料玉米667m2产量达到567.27 kg,增产效果非常显著。
Forage corn, Fushi 0601, was cultivated to investigate soil layer temperature effects respectively under five different film mulching modes which were autumn double ridges whole mulching （A）, early spring double ridges whole mulching （E）, whole mulching before sowing （W）, half flat mulching （H）, and non-film mulching （N） at Caoxian Village, Ruoli Township, Jingyuan County of Gansu Province with 240 mm annual rainfall. The trial was targeted for measurement of surface, 5 cm, 10 cm, 15 cm, and 20 cm soil layer temperatures and for the research on soil temperature effects by whole plastic-film mulching on double ridges and planting in catchment furrows of dry-land corn. The results indicated that there existed A 〉 E 〉 W 〉 H 〉 N at each different growing stage for various soil layer temperatures and effective accumulated temperatures （EAT）. EAT by different film mulching modes could satisfy normally needed growing accumulated temperature except by N in that it led to hard maturity and low yield with 130.95 kg/667m^2 instead of 567.273 kg/667m^2 by A showing significant yield increasing effect.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第5期71-75,共5页
Agricultural Research in the Arid Areas
基金
甘肃省科技厅"甘肃省地膜高效利用技术研究与示范"项目(甘农科1995-03)
关键词
覆膜
玉米田
土壤温度
film mulching
maize filed
soil temperature
