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Relay and sequential cropping corn with winter oilseed crops in northern climates
Nutrient Cycling in Agroecosystems ( IF 2.4 ) Pub Date : 2019-11-20 , DOI: 10.1007/s10705-019-10036-x
Ronghao Liu , M. Scott Wells , Axel Garcia y Garcia

Winter oilseed crops camelina [Camelina sativa (L.) Crantz] and field pennycress (Thlaspi arvense L.) are potential candidates for diversifying the corn–soybean rotation in the upper Midwest U.S.; however, little is known about their performance in double cropping with corn. A 2-year study of relay- and sequential-cropping corn with winter camelina and field pennycress was conducted to evaluate such a strategy. Cropping systems did not affect the biomass and grain yield of winter oilseed crops. Overall, biomass, N uptake, and grain yield of winter camelina were, respectively, 3.1, 2.5, and 2.3 fold higher than field pennycress. Over the 2-year study, grain yield of corn in relay was decreased by 18.5% compared to its control; corresponding to 18 and 19% reduction when relayed with winter camelina and field pennycress, respectively. Relative to mono-crop, total grain yield (corn + oilseed crop) and net income of corn in relay with winter camelina decreased 12.9 and 22.9%, respectively, while total grain yield and net income of corn in relay with field pennycress decreased 16.7 and 40.1%, respectively. Over the 2-year study, grain yield of sequential corn increased 13.9% compared to its control; corresponding to 16 and 12% increase following winter camelina and field pennycress, respectively. Sequential cropping maintained or increased total grain yield and net income compared to its control. Our results support winter oilseed crops as candidates to diversify the corn–soybean rotation in northern climates; however, the development of technologies aiming at maximizing grain yield and economic value in double cropping is needed.

中文翻译:

北部气候下冬季油料作物的连作和连作玉米

冬季油料作物油茶(Camelina sativa(L.)Crantz]和田间豆瓣(Thlaspi arvenseL.)是使美国中西部上游玉米-大豆轮换多样化的潜在候选人;然而,人们对它们在玉米双作中的表现知之甚少。进行了为期2年的连作和连作玉米与冬季山茶花和田间小叶菊的研究,以评估这种策略。种植制度没有影响冬季油料作物的生物量和谷物产量。总体而言,冬季山茶花的生物量,氮素吸收和谷类产量分别比田间豆瓣高3.1、2.5和2.3倍。在为期2年的研究中,中转玉米的谷物产量比其对照降低了18.5%。分别与冬季山茶花和田间小旗菊接生时分别减少18%和19%。相对于单作,与冬季山茶花接生的玉米总产量(玉米+油料作物)和玉米净收入分别下降了12.9%和22.9%,而与田间小豆瓣接生的玉米总谷物产量和净收入分别下降了16.7%和40.1%。在为期2年的研究中,连续玉米的谷物产量比对照提高了13.9%。分别对应于冬季山茶花和田间豆瓣菜分别增加16%和12%。与对照相比,连作保持或增加了谷物总产量和净收入。我们的结果支持冬季油料作物成为北部气候下玉米-大豆轮换多样化的候选者。但是,需要开发旨在使双季作物的谷物产量和经济价值最大化的技术。田间豆科植物的总谷物产量和玉米净收入分别下降了16.7%和40.1%。在为期2年的研究中,与对照相比,连续玉米的谷物增产13.9%。分别对应于冬季山茶花和田间豆瓣菜分别增加16%和12%。与对照相比,连作保持或增加了谷物总产量和净收入。我们的结果支持冬季油料作物成为北部气候下玉米-大豆轮换多样化的候选者。但是,需要开发旨在使双季作物的谷物产量和经济价值最大化的技术。田间豆科植物的总谷物产量和玉米净收入分别下降了16.7%和40.1%。在为期2年的研究中,连续玉米的谷物产量比对照提高了13.9%。分别对应于冬季山茶花和田间豆瓣菜分别增加16%和12%。与对照相比,连作保持或增加了谷物总产量和净收入。我们的结果支持冬季油料作物成为北部气候下玉米-大豆轮换多样化的候选者。但是,需要开发旨在使双季作物的谷物产量和经济价值最大化的技术。分别对应于冬季山茶花和田间豆瓣菜分别增加16%和12%。与对照相比,连作保持或增加了谷物总产量和净收入。我们的结果支持冬季油料作物成为北部气候下玉米-大豆轮换多样化的候选者。但是,需要开发旨在使双季作物的谷物产量和经济价值最大化的技术。分别对应于冬季山茶花和田间豆瓣菜分别增加16%和12%。与对照相比,连作保持或增加了谷物总产量和净收入。我们的结果支持冬季油料作物成为北部气候下玉米-大豆轮换多样化的候选者。但是,需要开发旨在使双季作物的谷物产量和经济价值最大化的技术。
更新日期:2019-11-20
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