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首页> 外文期刊>Arkansas Agricultural Experiment Station: Research Series >No-till, Reduced Tillage, and Conventional Tillage Systems for Small-grain Forage Production
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No-till, Reduced Tillage, and Conventional Tillage Systems for Small-grain Forage Production

机译:小粒饲料生产的免耕,减耕和常规耕作系统

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摘要

This study compared no-till techniques to reduced tillage and conventional tillage for the production of small-grain forages for grazing stacker calves. A mixture of wheat and rye was planted in the first 2 weeks of September at a rate of 60 Ib of each/acre in 15 four-acre pastures (n = 5 pastures/tillage system). Initial stocking consisted of 90 steers (six steers/ pasture, BW = 458 Ib), which grazed 88 d from October 28, 2003 to January 23, 2004. A second group of 135 steers (BW = 513 Ib) grazed 56d from March 2, 2004 to April 27, 2004. Fall ADG of stacker calves on no-till pastures was 0.37 Ib/d higher (P < 0.05) than on reduced tillage and conventional tillage pastures. ADG was not different among tillage treatments during spring grazing. Gains/acre were greater (P < 0.10) for no-till than reduced tillage and conventional tillage (490, 446, and 427 Ib, respectively). Forage production was higher (P < 0.05) in no-till pastures than it was in the conventional tillage pastures at the initiation of fall grazing (1,708 vs. 1,386 Ib), the end of fall grazing (1,140 vs. 923 Ib), and the initiation of spring grazing (1,064 vs. 778 Ib). No-till pastures also contained more (P < 0.05) forage at the initiation of spring grazing than reduced tillage pastures (1,064 vs. 830 Ib). It appears that establishing wheat and rye using no-till is superior in the fall grazing period. Based on these data, no-till methods of establishing small-grain forages to be utilized under stacker cattle are as successful as reduced tillage and conventional tillage practices.
机译:这项研究将免耕技术与减少耕种和常规耕种相比,用于生产放牧堆肥犊牛的小粒饲料。在9月的前两周,将小麦和黑麦的混合物以每英亩60磅的比例种植在15个四英亩的牧场(n = 5牧场/耕作系统)中。最初的放养量为90头(六头/牧场,BW = 458 Ib),从2003年10月28日至2004年1月23日放牧了88 d。第二组135头(BW = 513 Ib)从3月2日放牧了56 d。 ,从2004年至2004年4月27日。免耕草场秋季小牛的日均ADG比减少耕种和传统耕作草场的平均ADG高0.37 Ib / d(P <0.05)。春季放牧期间,耕作处理之间的ADG并无差异。免耕耕作的收益/英亩要比减少耕作和传统耕作(分别为490、446和427 Ib)更大(P <0.10)。在开始放牧之前(1,708 vs. 1,386 Ib),结束放牧之前(1,140 vs. 923 Ib),免耕牧场的牧草产量高于传统耕作牧场(P <0.05),并且春季放牧的开始(1,064对778 Ib)。在春季放牧开始时,免耕牧场的草料也比减少耕种的牧场更多(P <0.05)(1,064比830 Ib)。看来在秋季放牧期间使用免耕种植小麦和黑麦更为优越。根据这些数据,免耕法建立堆肥牛利用的小粒饲料的方法与减少耕种和常规耕作方法一样成功。

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