复播玉米干物质累积及产量对不同膜下滴灌灌水量的响应研究

2016年在新疆阿克苏地区林果试验基地无底测坑内进行灌溉试验,设两个灌溉条件,分别为定灌水周期变灌溉定额试验和定灌溉定额变灌水周期试验,以当地传统地面灌溉为对照,分析不同灌水条件下各生育期夏玉米的干物质累积量、产量及产量构成因素的变化规律。结果表明,相同灌水周期灌水量较大的处理,在各生育期内夏玉米的干物质积累量及产量均较大;相同灌溉定额灌水次数较频繁的处理,在各生育期内夏玉米的干物质积累量及产量均较大。因此,在阿克苏地区选择灌水量为300 m~3/hm~2,灌水周期为6 d的灌溉制度较适宜;选择灌水量为450 m~3/hm~2,灌水周期为8 d的灌溉制度较适宜。

Effects of Different Irrigation Systems on Dry Matter Accumulation and Yields of Multiple Cropping Maize under Mulch Drip Irrigation

An irrigation experiment was carried out in fruit experiment of Aksu prefecture of Xinjiang in 2016. Setting up two irrigation tests, respectively, one of the tests is different irrigation levels with same irrigation cycle and the other one is different irrigation cycle with same irrigation level, the local traditional surface irrigation for comparison. The dynamic changes of maize growth were analyzed, including dry matter accumulation and grain yield. The results showed that the same cycle with high irrigation level had the highest dry matter accumulation and grain yeild during maize growth. Same irrigation level with more irrigation times had the highest dry matter accumulation and grain yeild during maize growth. In general, it is suitable that to choose 300 m³/ha for irrigation water with 6 days for irrigation cycle and 450 m³/ha for irrigation water with 8 days for irrigation cycle in Aksu.