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采用灌溉处理和自然降水处理2种种植模式和聚类分析法,对12个不同生态类型的夏玉米灌浆特性进行分析研究。结果表明,灌水处理条件下,不同品种干物质积累均较自然降水条件下有所提高,且不同程度的延长灌浆持续时间。模糊聚类分析表明,灌溉和自然降水两种处理均分为3种类型,灌水处理下,金豫8号为代表的品种干物质积累量最多,平均灌浆速率较高,灌浆持续时间一般;洛06-2为代表的品种灌浆持续时间较长,但平均灌浆速率和干物质积累量都处于中等水平;郑单958为代表的品种,灌浆特性一般。自然降水处理以中科4号、洛玉5号、金豫8号为代表的品种归为第一类,此类品种灌浆性能最好,干物质积累量最大;金赛29干物质积累量、灌浆持续时间和平均灌浆速率等灌浆特性较差,归为第二类;以郑单958为代表的品种灌浆性能一般,归为第三类。灌水处理对金赛29、浚单20、郑单958、中科4号有明显的增产效果;金豫8号平均灌浆速率和干物质积累量均最大,灌浆性能较为突出。
Using two kinds of planting patterns of irrigation treatment and natural precipitation treatment and cluster analysis method, the grouting characteristics of 12 different types of summer maize were analyzed. The results showed that under irrigation treatment, the dry matter accumulation of different cultivars was higher than that under natural rainfall and the grouting duration was prolonged to some extent. Fuzzy cluster analysis showed that irrigation and precipitation were divided into three types. Under irrigation treatment, the varieties represented by Jinyu 8 had the highest accumulation of dry matter, the higher average filling rate and the same duration of filling. 06-2 for a long time, but the average filling rate and dry matter accumulation are in the medium level; Zhengdan 958 is the representative of the varieties, filling characteristics in general. Natural Precipitation The varieties represented by Zhongke No.4, Luoyu No.5 and Jinyu No.8 were classified as the first type, the best grouting performance and the highest accumulation of dry matter. Kinsey 29 dry matter accumulation, Grouting characteristics such as duration of grouting and average filling rate are poor, which are grouped into the second category. The grouting performance represented by Zhengdan 958 is generally classified as the third category. Irrigation treatment had obvious stimulation effect on Kinsai 29, Xundan 20, Zhengdan 958 and Zhongke 4; Jinyu 8 had the largest average grain filling rate and dry matter accumulation, and the grouting performance was outstanding.