摘要
为了探讨不同秸秆还田对土壤及作物的影响,设置了玉米秸秆直接还田(Ms)、小麦秸秆直接还田(Ws)、玉米秸秆+牛粪还田(Ms+Cd)、小麦秸秆+牛粪还田(Ws+Cd)及秸秆不还田(CK)对小麦土壤碳、氮、水和小麦产量的变化研究。结果表明,小麦成熟后4种秸秆还田处理土壤有机碳含量提高了3.31%~31.97%、全氮含量提高了9.48%~28.43%。提高了土壤保水能力,灌浆期0~80 cm土层、成熟期0~20 cm土层土壤含水量均显著高于CK;显著促进小麦拔节期与成熟期植株生长、增加叶面积系数,比CK增产6.43%~29.82%,经济效益显著,以小麦秸秆+牛粪还田(Ws+Cd)处理最高。因此4种秸秆还田处理均能达到改善土壤质量、提高小麦产量的效果,其中以小麦秸秆+牛粪还田(Ws+Cd)综合效应最好。
In order to study effect of different straw returning methods on soil and crops, experiments of the effect of straw returning to field（Ms）,wheat straw returning to field（Ws）,straw＋corn returning to field（Ms ＋ Cd）,wheat straw ＋ corn returning to field（Ws ＋ Cd）and straw does not return to the field（CK）on wheat soil carbon, nitrogen, water and wheat yield were set up. The results showed that after maturity, soil organic carbon was increased by the four straw returning methods by 3.31% ~ 31.97% and total nitrogen increased by 9.48% ~ 28.43%, soil water retention capacity was strengthened, the water within 0~80 cm soil layer at filling stage and the water within 0~20 cm soil layer at maturity stage were significantly higher than CK. Growth of wheat was significantly promoted, leaf area coefficient was increased the, yield was increased by 6.43% ~ 29.82% at jointing and maturity stages with significant economic benefit（Ws ＋ Cd treatment, the highest）. Therefore, the four kinds of straw returning methods can all achieve the effect of improving soil quality and increasing wheat yield, and the combination of wheat straw and cow dung was the best.
作者
何芳芳
杨占喜
杨金娟
HE Fang-fang(Wuzhong City Litong District Service Center for Agricultural Technology Extension,Wuzhong, Ningxia 751100)
出处
《宁夏农林科技》
2018年第4期6-9,共4页
Journal of Ningxia Agriculture and Forestry Science and Technology
基金
2017年引黄灌区小麦品质影响因子及优质栽培技术研究
关键词
小麦
秸秆还田
生长
含水量
产量
经济效益
Wheat
Straw returning
Growth
Water content
Yield
Economic benefit
