全膜双垄沟播玉米田覆盖化学除草地膜对后茬亚麻生长发育的影响

在陇东旱塬区正常的土壤环境和气候背景下,测定了全膜双垄沟播玉米田覆盖化学除草地膜对后茬亚麻生长发育的影响。结果表明,全膜双垄沟播玉米田覆盖化学除草地膜,其后茬亚麻的出苗率、密度（幼苗期至成熟期）、株高（枞形期至成熟期）、根部干重（枞形期至始花期）、地上部干重（枞形期至始花期）、果粒数、千粒重和产量较覆盖普通白色地膜处理分别降低2.21%、3.39%~3.67%、0.04~2.05cm、0.00~6.33mg/株、8.33~84.67mg/株、0.55粒/果、0.06g和2.66%,有效分茎数、蒴果数则较覆盖白色地膜处理分别增加0.04个/株和0.69果/株。但除地上部在始花期的干重在2种地膜处理间有显著差异外,其他各主要农艺性状及产量均在2种地膜处理间无显著差异。综合看出,全膜双垄沟播玉米田覆盖化学除草地膜对后茬亚麻主要农艺性状及产量均有一定的影响,但其效应多较弱,具有一定的安全性。当茬口安排趋紧时,对于覆盖了化学除草地膜的全膜双垄沟播玉米田,其后茬可安排种植亚麻。

Effects of Chemical Weeding Mulching Film on Growth and Development of Succeeding Crop Linseed in Corn Field of Whole-Mulching Plastic Films on Double Ridges

Effects of chemical weeding mulching film on growth and development of succeeding crop linseed in corn field of whole-mulching plastic films on double ridges was measured under the background of normal soil environment and climate in Longdong dryland area. The results showed that seeding emergence, density, stem length, root dry weight, dry weight of overground part, fruit grain number, thousand seed weight and yield of succeeding crop linseed in corn field of whole-mulching plastic films on double ridges with chemical weeding mulching film were reduced 2.21%, 3.39%-3.67%, 0.04-2.05cm, 0.00-6.33mg/plant, 8.33-84.67mg/plant, 0.55 grain/fruit, 0.06g and 2.66% comparing with covering ordinary white film, respectively. Effective points stem number and capsule number were increased 0.04 per plant and 0.69 fruit/plant, respectively. Dry weight of overground part at the beginning of flowering was significantly different between two treatments, and other major agronomic characters and yield were not significantly different. Taken together, major agronomic characters and yield of succeeding crop linseed had positive influence in corn field of whole-mulching plastic films on double ridges with chemical weeding mulching film, but the effect was weak and had certain security. When crop arrangement is tighter, the succeeding crop linseed can be arranged in corn field of whole-mulching plastic films on double ridges with chemical weeding mulching film.