Furrow irrigation infiltration with multiple traffic and increased axle mass
Furrow irrigation infiltration with multiple traffic and increased axle mass
复制标题
沟灌渗透，具有多种流量和增加的轴质量
DOI：
10.13031/2013.21588
复制
发表时间：
1997
影响因子：
0.9
通讯作者：
J. T. Musick
中科院分区：
文献类型：
--
作者：
R. R. Allen;J. T. Musick
南部高平原的普尔曼粘壤土和相关土壤具有缓慢至中等渗透性，
沟轮运输降低了灌溉渗透率。交通影响进行了评估与处理一（1）和两个
(2)使用质量为4.1和8.2 Mg（9，000和18，000 lb）的相对较轻（L）和较重（H）拖拉机进行犁沟，
分别在后轴上具有75%的质量。处理被指定为L-1、L-2、H-1和H-2。两者都较大
拖拉机的质量和重复运输增加了耕作区的压实度，降低了灌溉渗透率和总渗透率。
浸润来自车轮交通压实的土壤强度（锥形土压力计）在100至150 mm（4至6英寸）处最大。
所有处理的深度，接近150米（6英寸）的底部。主要耕作区对于第一个8小时的渗透
耕作后，采用流动式沟灌入渗仪进行试验，L-1、L-2、H-1和H-2处理均降低了平均入渗量
分别增加23、33、38和43%;与212 mm（8.3 in.）进行禁止通行检查因为
第一次灌溉后，沟表层固结，所有处理的入渗量在第一次灌溉期间减少约20%。
60天后进行第二次测试。支票渗透171 mm（7.3 in.）交通引起的渗透减少为16，
L-1、L-2、H-1和H-2处理分别为23、28和36%。更好地理解可变沟道流量
对灌溉入渗的影响使生产者能够通过使用交通压实来提高水的应用效率，
减少早期季节的过度渗透，或在作物季节后期低渗透是一个问题时限制交通。
Pullman clay loam and related soils in the Southern High Plains are slowly to moderately permeable, and
furrow wheel traffic reduces irrigation infiltration rates. Traffic effects were evaluated with treatments of one (1) and two
(2) furrow passes with relatively light (L) and heavy (H) tractors of 4.1 and 8.2 Mg (9,000 and 18,000 lb) mass,
respectively, having 75% of the mass on the rear axle. Treatments are designated L-1, L-2, H-1, and H-2. Both larger
tractor mass and repeated traffic increased tillage zone compaction and reduced irrigation infiltration rates and total
infiltration. Soil strength (cone penetrometer) from wheel traffic compaction was greatest at the 100 to 150 mm (4 to 6 in.)
depth for all treatments, which is near the bottom of the 150 m (6 in.) primary tillage zone. For the first 8-h infiltration
test after tillage, using a flowing furrow infiltrometer, the L-1, L-2, H-1, and H-2 treatments reduced average infiltration
by 23, 33, 38, and 43%, respectively; compared with 212 mm (8.3 in.) of infiltration for the no-traffic check. Because of
furrow surface layer consolidation after the first irrigation, infiltration for all treatments was about 20% less during the
second tests about 60 days later. The check infiltrated 171 mm (7.3 in.) and traffic induced infiltration reductions were 16,
23, 28, and 36%, respectively, for L-1, L-2, H-1, and H-2 treatments. A better understanding of variable furrow traffic
effects on irrigation infiltration enables producers to improve water application efficiency by using traffic compaction to
reduce excessive early season infiltration or by limiting traffic where low infiltration is a concern later in a crop season.