沙地衬膜对小麦生长和产量的影响

Effects of the film-bottomed sandy land on the growth and yield of wheat

采用随机区组设计对景电二期灌区衬膜沙地（深度分别为60cm、70cm、90cm）和不衬膜沙地（对照周）小麦的生长状况和产量进行了观测分析，结果表明：衬膜沙地小麦的出苗期比对照地提前2～4d；在测定期内，村膜样地小麦的平均高度、叶面积指数、叶干质量均明显高于对照。分别较对照增加14．5％、70．9％和48．5％，其中以70cm村膜深度的生长状况最好，分别较对照增加22．3％、991％和867％；收获后产量测定结果表明，衬膜小麦比对照平均增产3495kg／hm2，最大增产幅度为189％。

The paper analyzed the growth and the yield of wheat in the film-bottomed sandy land (60 cm, 70 cm, 9O cm deepth respectively) and the non-film-bottomed sandy land (the contrast) in the Electronic-irrigated Secondary Area of Jingtai sandy land with random group design. The result showed that the wheat seedling emergency in the film-bottomed sandy land was 2 to 4 days ahead of the contrast. In the different growth periods, the mean height,leaf area index and its dry weight of wheat in the film-bottomed sandy land were much more than th0se of the contrast. These growth indexs increased by 14-5 %, 70.9 % and 48.5 % respectively. As the best situation of which the growth indexs of the wheat in the film-bottomed sandy soil in 70 cm deep increased by 22.3 %, 99.1 % and 86.7 %, respectively- The result of the yield showed that, the mean yield in the film-bottomed sandy land was 3 495 kg/hm2 more than the contrast and the utmost yield rate increase by 189 %