定西42号小麦适宜播种期研究  

Study on Suitability of Sowing Date of Wheat Dingxi No.42

作　　者：董莉霞[1] 李广[1,2] 逯玉兰 聂志刚 王钧[1] DONG Lixia;LI Guang;LU Yulan;NIE Zhigang;WANG Jun(College of Information Science and Technology,Gansu Agricultural University,Lanzhou,Gansu 730070,China;Gansu Provincial Key Laboratory of Aridland Crop Sciences,,Lanzhou,Gansu 730070,China)

机构地区：[1]甘肃农业大学信息科学技术学院,兰州730070 [2]甘肃省干旱生境作物学重点实验室,兰州730070

出　　处：《作物研究》2020年第5期408-413,共6页Crop Research

基　　金：甘肃农业大学信息科学技术学院发展基金项目(GAU-XKFZJJ-2020-10)。

摘　　要：为了研究定西42号小麦在陇中黄土高原干旱区的适宜播种期,对试验区内1971—2017年3个播期(3月1日、3月15日、3月30日)的历史气候数据进行相关性分析,并运用APSIM模型模拟定西42号在3个播期下的产量和产量构成因素。结果表明:3个播期的降水都偏少,没有显著差异;播期3气温值高,总体稳定,波动较小;播期2条件下太阳辐射量值较稳定,波动较小。小麦产量和千粒质量随着播期的推迟先增大后减小。综合各种因素,播期2即3月15日前后播种是定西42号在陇中黄土高原干旱区的最佳播期。In order to study the sowing date suitability of wheat Dingxi No.42 in the arid area of Longzhong Loess Plateau,the historical climatic data of three sowing dates(March 1,March 15,March 30)in the experimental area from 1971 to 2017 were analyzed,and the yield and yield components of Dingxi No.42 under three sowing dates were simulated by APSIM model.The results showed that the precipitation of the three sowing dates was less,and there was no significant difference.The temperature value of sowing date 3 was high,the overall stability and fluctuation was small,followed by sowing date 2,the value of solar radiation under sowing date 2 was relatively stable and the fluctuation was small.The yield and 1000-grain weight of wheat increased at first and then decreased with the delay of sowing date.Based on various factors,sowing date 2(around March 15),was the best sowing date for Dingxi No.42 in the arid area of Longzhong Loess Plateau.

关 键 词：小麦 播种期 气候因素 定西42号 

分 类 号：S512.104.2[农业科学—作物学]