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首页> 外文期刊>Journal of Maize Research and Development >Tillage and planting density affect the performance of maize hybrids in Chitwan, Nepal
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Tillage and planting density affect the performance of maize hybrids in Chitwan, Nepal

机译：耕作和种植密度影响尼泊尔Chitwan玉米杂交种的性能

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To find out whether the different tillage methods at different planting densities affect the performance of maize hybrids, an experiment was carried out at National Maize Research Program, Rampur during spring season of 2013 and 2014.The experiment was laid out in strip plot design with three replications having 12 treatments.The vertical factor was tillage with conservation tillage (No Tillage + residue=NT) and conventional tillage (CT) and the horizontal factor were genotypes (Rampur Hybrid-2 and RML-32/RML-17) and in split planting geometries (75cm × 25cm =53333 plants/ha, 70cm × 25cm=57142 plant/ha and 60cm ×25cm= 66666 plants/ha).In both the years, the highest number of cobs (73,177 and 67638/ha) was recorded at planting density of 66666/ha.NT had the highest no of kernel rows/cob (14.01) as against 12.12 in CT in 2014.The highest number of kernels (27.3 and 29.29) per row was recorded in NT during 2013 and 2014 respectively.Similarly, in 2014, the highest number of kernels were found in RML-32/RMl-17 (29.17/row) and planting density of 53333/ha (28.46/row).In 2013, RML-32/RML-17 produced the highest test weight of 363.94g over the Rampur hybrid-2 with 362.17g. Significantly the highest grain yield of 9240.00 kg/ha in 2013 and 7459.80 kg/ha in 2014 at planting geometry of 65cm ×25cm were recorded.No effects was found by tillage methods for grain yields of maize in 2013, but was found in 2014 (7012.18 kg in NT compared to 6037.59 kg/ha in CT).NT and wider spaced crop matured earlier in both the years; however Rampur hybrid-2 matured earlier to RML- 32/RML-17 in 2013.In 2014, harvest index of 47.85 % was recorded in planting geometry of 66666/ha, the highest benefit cost ratio of 1.36 was worked out in NT and 1.46 at the density of 66666/ha.The highest value of 2.46% of soil organic matter was recorded in NT as compared to 2.43% in CT.
机译：为了了解不同种植密度下的不同耕作方法是否会影响玉米杂交种的性能，2013年和2014年春季在拉姆普尔国家玉米研究计划中进行了一项试验，该试验以带状样地设计方式进行，其中三个重复处理有12种处理。垂直因子是保护性耕作的耕作（No免耕+残渣= NT）和常规耕作（CT），水平因子是基因型（Rampur Hybrid-2和RML-32 / RML-17）并分种植几何形状（75cm×25cm = 53333株/公顷，70cm×25cm = 57142株/公顷和60cm×25cm = 66666株/公顷），这两年的穗轴数量最高（73,177和67638 /公顷）种植密度为66666 / ha.NT上的玉米粒数/穗轴数最高（14.01），而2014年的CT为12.12.2013年和2014年，NT记录的玉米粒数/行数最高（27.3和29.29）同样，在2014年，内核数量最多的是f重量为RML-32 / RMl-17（29.17 /行），种植密度为53333 / ha（28.46 /行）。2013年，RML-32 / RML-17的最高测试重量为363.94克，高于Rampur杂交种- 2装362.17克。种植面积为65cm×25cm时，2013年的最高谷物产量为9240.00 kg / ha，2014年的最高谷物产量为7459.80 kg / ha.2013年耕作方法对玉米的谷物产量没有影响，但在2014年被发现（西北地区为7012.18千克，而北部地区为6037.59千克/公顷。但是Rampur hybrid-2在2013年成熟到RML-32 / RML-17较早.2014年，在种植几何形状66666 / ha中记录的收获指数为47.85％，在北领地和1.46的最高收益成本比为1.36。氮的最高记录值为土壤有机质为2.4666％，最高密度为66666 / ha。

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