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首页> 外文期刊>Field Crops Research >How two ridges and the furrow mulched with plastic film affect soil water, soil temperature and yield of maize on the semiarid Loess Plateau of China
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How two ridges and the furrow mulched with plastic film affect soil water, soil temperature and yield of maize on the semiarid Loess Plateau of China

机译：黄土高原半干旱区两垄沟覆盖地膜对土壤水分，温度和玉米产量的影响。

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Plastic film mulching is an effective practice to improve water harvest and crop productivity in semiarid areas. The grain yield of maize (Zea mayis) as affected by various mulching practices was studied in the field in 2006 and 2007 to determine a mulching pattern that would increase rainwater harvest and crop yield. In 2006, three treatments were used: (1) flat plot without mulch (CK); (2) two ridges and furrows mulched by one plastic film and maize planted in the furrow between the two ridges (DRM); (3) two rows of maize planted in a ridged bed mulched with plastic (RM). Two additional treatments were tested in 2007: (4) two rows of maize mulched with a 70-cm wide plastic film and then 30cm of bare soil alternated (NM); (5) maize planted without ridges in double rows 80cm apart and the whole plot mulched with plastic film (WM). Maize yield was highest in the DRM treatment: 1150kghap# in 2006 and 6130kghap# in 2007. This was associated with better topsoil moisture in the planting zone and higher soil temperature in the DRM treatment compared with the other treatments. The soil moisture in DRM reached 10.5% and 22.6%, in 2006 and 2007, respectively, the highest of all the treatments. The mean temperature in DRM was higher than in CK and RM by 1.2pC and 0.4pC, respectively in 2006, while in 2007, it was higher than that in CK by 3.1pC, in RM by 0.6pC, in NM by1.7pC and in WM by 0.6pC in 2007. The higher temperatures in the DRM treatments resulted in the maize maturing earlier than in the other mulched treatments, 15 days earlier than in RM in 2006 and 11 days, 3 days, and 14 days earlier than in RM, WM, and NM, respectively in 2007. The highest water-use efficiency (WUE) was found in DRM in both years. In 2006, the WUE in DRM was six times greater than that in CK and 9.96% greater than in RM. In 2007, the WUE for grain in the DRM treatment was 16.6kghap# mmp#, 11 times greater than that in CK and greater than RM, NM and WM by 67.7%, 26.7% and 9.2%, respectively. It is concluded that the double ridges and furrow mulching treatment could serve as a model for maize production for small-holder farmers in semiarid regions.
机译：覆盖塑料膜是提高半干旱地区水的收成和作物生产率的有效措施。 2006年和2007年，在田间研究了受各种覆盖措施影响的玉米（Zea mayis）的谷物产量，以确定可以增加雨水收成和农作物产量的覆盖方式。在2006年，使用了三种处理方法：（1）不覆盖地块（CK）; （2）用一个塑料膜覆盖两个垄和沟，在两个垄之间的沟中种植玉米。 （3）将两行玉米种植在覆盖有塑料（RM）的垄床上。 2007年对另外两种处理方法进行了测试：（4）用70厘米宽的塑料膜覆盖两排玉米，然后交替覆盖30厘米的裸土（NM）; （5）玉米以80cm的双行无垄种植，整个地块覆盖有塑料膜（WM）。在DRM处理中，玉米单产最高：2006年为1150kghap＃，2007年为6130kghap＃。与其他处理相比，这与播种区表土更好的水分和更高的土壤温度相关。在2006年和2007年，DRM中的土壤水分分别达到10.5％和22.6％，是所有处理中最高的。 2006年，DRM的平均温度分别比CK和RM高1.2pC和0.4pC，而2007年，它比CK的平均温度高3.1pC，RM的平均温度高0.6pC，NM的平均温度高1.7pC。 2007年WM的玉米平均熟化时间为0.6pC。DRM处理的较高温度导致玉米成熟，比其他覆盖处理更早，2006年比RM提前15天，比RM提前11天，3天和14天。 ，WM和NM，分别是2007年。在这两年中，DRM的用水效率（WUE）最高。 2006年，DRM中的WUE是CK中的WUE的六倍，RM中的WUE的9.96％。 2007年，DRM处理的谷物WUE为16.6kghap＃mmp＃，比CK高11倍，比RM，NM和WM分别高67.7％，26.7％和9.2％。结论是，双垄沟垄覆盖处理可以作为半干旱地区小农户玉米生产的模型。

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