北疆麦后免耕滴灌复播青贮玉米生理特性和产量结构特点研究

【目的】研究不同生育期复播青贮玉米的生长发育规律,筛选适宜于新疆北疆麦后复播的青贮玉米品种。【方法】以3个生育期不同的玉米品种新玉15号、新玉28号和垦青129为试验材料,研究各品种的生长发育特性和产量结构特点。【结果】在北疆地区选择新玉15号、新玉28号作为麦后复播青贮玉米种植,可以正常成熟;垦青129麦后复播种植不能完全成熟。复播青贮玉米的叶面积指数在吐丝期后急速下降,干物质积累从小喇叭口期到抽雄期速度最快。【结论】新疆北疆地区种植复播青贮玉米选择生育期在95～100 d的玉米品种是达到高产优质关键,新玉15号和新玉28号可作为新疆北疆光热资源较丰富地区适宜种植的高产复播青贮玉米品种。

Comparison of Physiological Property and Yield Production with Multiple Cropping Silage Corn in the condition of No - tillage and Drip Irrigation in Northern Xinjiang

Objective]The experiment's aim was to study the growth and development of multiple cropping silage corn,and choose the suitable growth and development period varieties in northern Xinjiang. Method]Three multiple cropping silage corn varieties,XINYU15,XINSIYU10,KENQING129 were selected to compare the yield production and physiological property with different growth period multiple cropping silage corn.Result]The results showed that Xinyu No.15 and Xinyu No.28 as the multiple cropping silage corn could mature naturally,Kenqing No.129 couldn't mature normally.The LAI of the multiple cropping silage corn descended rapidly,and the speed of DMA is the fastest from small boll bottom stage to tasseling stage. Conclusion]The Choice of the variety of the growth period from 95 to 100 days as the multiple cropping silage corn is right.