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首页> 外文期刊>Applied Engineering in Agriculture >Soil loading effects of planter depth-gauge wheels on early corn growth.
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Soil loading effects of planter depth-gauge wheels on early corn growth.

机译：播种深度计轮对玉米早期生长的土壤负荷影响。

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摘要

Final soil manipulation before seed germination occurs during the planting operation. Contact force of depth-gauge wheels adjacent to the seed opener potentially alters the environment for corn seed germination and early plant growth. A field experiment was conducted measuring seed spacing, spacing variability, seed depth, emergence rate, plant dry matter, final stand, crop growth stage, and extended leaf height with different soil contact loads [light, 180 to 490 N (40 to 110 lb); medium, 490 to 890 N (110 to 200 lb); and heavy, over 890 N (200 lb)] and a range of three soil moistures (dry, moist, wet). A treatment with randomly variable contact load similar to that of a conventional planter (control) was also included. Emergence rate of corn plants was affected by load level and soil moisture conditions. With moist soil or in wet conditions, corn emerged more rapidly with a low load. In dry soil conditions, corn emerged more rapidly with a heavy load. Corn planted in the control treatment did not emerge as rapidly as the optimal loading for a given soil condition. Even though planter depth settings were set at the same position, seeds were planted deeper [8 to 13 mm (0.3 to 0.5 in.)] when load was heavier on depth-gauge wheels. Average seed spacing, standard deviation of seed spacing, final stand, growth stage, and extended leaf height were not statistically different across load levels. Plant dry matter weight was slightly increased at the V3 growth stage with low load levels in moist soils, but only at a reduced 85% confidence level.
机译：在播种过程中发生种子发芽之前的最终土壤处理。邻近开粒器的测深轮的接触力可能会改变玉米种子发芽和植物早期生长的环境。进行了田间试验，测量了不同土壤接触负荷下的种子间距，间距变异性，种子深度，出苗率，植物干物质，最终林分，作物生长阶段以及叶片高度的延长[轻，180至490 N（40至110磅） ）;中号490至890 N（110至200磅）;和重，超过890 N（200 lb）]和三种土壤湿度范围（干燥，潮湿，潮湿）。还包括与常规播种机（对照）类似的具有随机可变接触负荷的处理。玉米植物的出苗率受负荷水平和土壤水分条件的影响。在潮湿的土壤或潮湿的条件下，玉米在低负荷下生长更快。在干燥的土壤条件下，玉米在重负荷下生长更快。在给定的土壤条件下，对照处理中播种的玉米的生长速度不及最佳负载量。即使将播种机深度设置设置在相同位置，当深度规轮上的负载较重时，种子也可以播种得更深（8到13毫米（0.3到0.5英寸）。在不同的负荷水平上，平均种子间距，种子间距的标准差，最终林分，生长阶段和延伸的叶高在统计学上没有差异。在潮湿土壤中低负荷水平下，在V3生长阶段，植物干物质重量略有增加，但置信水平仅降低了85％。

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