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。

This article studied 12 different ecotypes of summer corn on grouting parameters with 2 kinds of planting modes and cluster analysis method. The results indicated that the dry material accumulation quantity and grouting duration under full irrigation were higher than that of drought condition. Using cluster analysis method, irrigation and drought methods were divided into three types. In irrigation, Jinyu No.8 was the representative variety. The main features of these were dry matter accumulation were maximum, the average grouting rate were higher, grouting duration were general. Luo06-2 represented by type Ⅱwhich kind of grouting duration were the longest, but the average grouting rate and dry material accumulation quantity were to be in the medium level. Zhengdan958 represented by other eight varieties grouting characteristics were general as type Ⅲ. Irrigation treatments had obvious role in production to Jinsai29, Xundan20, Zhengdan958 and Zhongke No.4. The average grouting rate and dry material accumulation quantity of Jinyu No.8 were the biggest.

国家玉米产业技术体系(nycyti-02)、粮食丰产科技工程(20 04BA520A-06)