不同时间揭膜对晚播小麦形态效应的研究

Studies on Morphological Effect of Late Sown Winter Wheat with Different Time of Taking Film off Field

晚播小麦地膜覆盖栽培,改善了膜下生态环境,协调了土壤中的水、肥、气、热,有利于小麦的生长发育。但是,揭膜后温室效应消失,小麦又处在自然界的条件下生长。因此,研究不同时间揭膜对小麦的形态效应,探索适宜揭膜时间,对培育壮苗提高覆膜麦的产量具有重要的意义。

To taking film off the field on time is an inportant techmical measure of late sown Win ter wheat under plastic film mulching. The microclimat'ic differences would arise in field as takeing film off field with different time, and it's roots, stems, Leaves, anel plant height, dry matter weight growth period and spikelet differentiation had a series of variation relatively. The morphogenesis of winter wheat plant has the in tegrated development effectuly after taking off film, and the vegetative growth and the generative growth would be improved. AT-same time, the number ear/per mu. number of grains/per. ear. 1000-grains weight of winter wheat were developed rationally, therefore, the yields of plastic film mulching of winter wheat increased.