摘要
在大田旱作条件下以绥粳18水稻品种为试验材料,使用吉农大抗倒专用肥,并设置T1,10∶0∶0、T2,7∶2∶1、T3,5∶3∶2、T4,3∶4∶3共4种基肥、分蘖肥和穗肥比例,探究适宜的复合肥运筹模式对旱作水稻倒伏特性的影响.结果表明:与一次性底肥施入(T1)相比,其他处理降低了株高、重心高度,增加壁厚,在成熟期T3处理较T1处理第1、2、3节间抗倒伏指数提高了 65.29％、77.17％、63.16％.T3处理相比于T1、T2、T4处理产量分别增加了 43.30％、8.16％和9.71％,氮素吸收利用率分别提高了 178.72％、43.43％和52.33％.T3处理有助于增强旱作水稻茎秆抗倒伏能力和氮素吸收利用率,最终达到高产抗倒的目的.
Abstract
Under the condition of field drying,the proportion of four kinds of base fertilizer,tillering fertilizer and ear fertilizer of Jinongda was used as the experimental material,and T1(10∶0∶0),T2(7∶2∶1),T3(5∶3∶2),T4(3∶4∶3)were set up to explore the influence of suitable compound fertilizer operation mode on the lodging characteristics of rice under dry cultivation.The results showed that compared with the one-time bottom fertilizer application(T1),the plant height and center of gravity height were reduced,the wall thickness was increased,and the lodging index between the 1st,2nd and 3rd nodes of the T3 treatment was increased by 65.29％,77.17％and 63.16％compared with the T1 treatment at the maturity stage.Compared with T1,T2 and T4,the yields of T3 treatment increased by 43.30％,8.16％and 9.71％,respectively,and the nitrogen uptake and utilization rate increased by 178.72％,43.43％and 52.33％,respectively.T3 treatment helps to enhance the lodging resistance of rice under dry cultivation stalks and nitrogen uptake and utilization,and ultimately achieve the purpose of high yield and overthrow resistance.
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维普
万方数据