论文部分内容阅读
为了解玉米秸秆还田下耕作方式与增施有机肥对小麦茎秆抗倒特性的调节作用,在前期定位试验的基础上,于2014-2015和2015-2016小麦生长季,选用百农207为材料,分析玉米秸秆全量粉碎还田条件下,不同耕作方式(深耕、浅耕、免耕)与增施有机肥相结合后小麦茎秆主要物理特性、抗倒性及产量的变化。结果表明,增施有机肥后小麦灌浆中后期的茎秆重心高度降低,茎秆鲜重、基部第二节间的茎壁粗度及茎壁厚度增加,抗折力增强,倒伏指数降低,抗倒性提高。两个年度的数据显示,小麦茎秆抗倒性均以深耕+有机肥处理效果最好,浅耕+有机肥处理次之;同时,深耕+有机肥处理(2014-2015)与浅耕+有机肥处理(2015-2016)产量较高。
In order to understand the regulating effect of tillage under corn stalks and the regulation mechanism of wheat stalk lodging resistance by applying organic manure, based on the pre-positioning test, in the wheat growing season from 2014-2015 and 2015-2016, The changes of main physical properties, lodging resistance and yield of wheat stalks under different tillage (deep plowing, shallow tillage and no tillage) combined with organic manure were analyzed under full crushing of corn stalks. The results showed that after the organic manure was added, the height of stem center decreased, the fresh weight of stem, the thickness of stem wall and the thickness of stem in the second internode increased, the resistance to stress increased, the lodging index decreased, Inverted increase. The data of two years showed that the lodging resistance of wheat stem was the best with deep plowing + organic fertilizer and the second with shallow tillage + organic manure. At the same time, the effect of deep plow + organic manure (2014-2015) and shallow tillage + organic Fertilizer treatment (2015-2016) higher yield.