摘要
通过在成都平原稻油轮作田2种秸秆覆盖栽培模式与传统栽培模式的4年定位试验,进行了油菜土壤含水率与油菜产量的研究。试验结果表明:在油菜全生育期,覆盖处理土壤含水率含量均极明显地高于翻耕不覆盖处理(CK),而免耕覆盖处理的土壤含水率又明显高于翻耕覆盖处理。油菜苔花期,覆盖处理比翻耕不覆盖处理(CK)的土壤含水率增加4.7%一29.8%,而免耕覆盖处理的土壤含水率又比翻耕覆盖处理高5.4%~13.0%;覆盖处理的油菜单株角果数极显著多于翻耕不覆盖处理(CK),增加2.0%~13.1%,而免耕覆盖处理又比翻耕覆盖处理增加1.6%一5.6%;覆盖处理的油菜产量比翻耕不覆盖处理(CK)的增产幅度为3.3%~14.2%,免耕覆盖处理又比翻耕覆盖处理增产3.2%~4.6%。成都平原区两熟制稻田(油菜)秸秆覆盖栽培有利于提高油菜产量,免耕覆盖栽培的增产效果更为明显,土壤含水率的提高是油菜增产的主要原因。
Through the four-year experiment of oil-seed rape cultured under rice-oilseed rape cropping system in plain area of Chengdu,2 straw covering farming patterns were compared with the traditional farming pattern to study the effect of different fanning patterns on soil moisture and rape yield. The results indicated that,during the growth period of rape,the soil water content of the field treated by straw covering was higher than that in the field treated by tillage non-straw covering (CK). Furthermore, the soil water content of the field treated by nontillage straw covering was higher than that in the field treated by tillage straw covering. From bolting period to flowering period of rape, the soil water content of the field treated by straw covering was from 4.7% to 29.8% and higher than that in the field treated by tillage non-straw covering ( CK), and the soil water content of the field treated by non-tillage straw covering was from 5.4% to 13.0% and higher than that in the field treated by tillage straw covering. In addition ,the pod numbers of each rape in the straw covering farming increased 2.0% to 13.1% compared with the tillage non-straw covering farming (CK) ,and the pod numbers of each rape in the non-tillage straw covering fanning increased 1.6% to 5.6% compared with the tillage straw covering fanning. The rape yield in the straw covering farming increased 3.3% to 14. 2% compared with the tillage non-straw covering farming ( CK), and the rape yield in the non-tillage straw covering fanning increased 3.2% to 4.6% compared with the tillage straw covering farming. The straw covering farming patterns was propitious to the increase of rape yield in Chengdu plain area,and the non-tillage straw covering fanning pattern could especially increase the rape yield ,and the higher soil water content could increase the number of rape pod.
出处
《西南农业学报》
CSCD
北大核心
2010年第2期354-358,共5页
Southwest China Journal of Agricultural Sciences
基金
国家支撑计划项目(2007BAD89B15)
四川省现代农业示范工程专项(2007Z06-30)
四川省公益性项目(NY2007001)
农业部跨越计划(2006跨25)
关键词
稻油轮作田
覆盖栽培
油菜产量
土壤含水率
Rice-oilseed rape cropping system
Straw covering farming patterns
Oil-seed rape yield
Soil water content