半干旱地区冬小麦地膜覆盖穴播技术研究

Study on the Technique of Bunch Planting with Film Mulching of Winter Wheat in Semi-arid Region

1994～1996年，在山西浮山以露地条播等为对照，就冬小麦地膜覆盖穴播技术进行了研究。结果表明：全生育期地膜覆盖穴播技术在冬前、拔节期之前有较好的增温效果，有效地促进了小麦生育进程，延长了幼穗分化时间，使单株分蘖、次生根、绿叶数优于对照；在生长中后期有效利用深层水，使水分生产效率较对照提高0．11kg／mm，较好地协调了高产小麦水热规律需求，达到小麦公顷产量4521．0kg。该项技术有效地改善了半干旱地区冬小麦水热环境，是半干旱地区冬小麦实现高产稳产的一项战略性措施。

The results of the study at Fushan, Shanxi Province, during 1994 - 1996 showed that the technique of bunch planting with film mulching in the whole growth period could improve the water and heat environment of winter wheat in the semi-arid region distinctly. Compared with drilling planting, bunch planting with film mulching during the earlier growth stage and mulching with straw, the technique can increase the production and make higher gain. The technique can improve the process of the wheat development effectively, delay the development of the inflorescence. The number of the tiller, the adventitious roots and the green leaf were higher than those of control. Since it can utilize the deeper layer water, its water production efficiency was higher than that of water and heat demanding high - yield wheat and output achived 4521kg/hm2. This technique is a strategic method to make a high and stable yield in the semiaird regions.