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[1]ZHANG Xiao-hong,ZHANG Xu-cheng.Effects of Different Mulching Methods on Water Consumption and Yield of Millet in Rain-fed Semiarid Area[J].Research of Soil and Water Conservation,2012,19(05):29-33.

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Effects of Different Mulching Methods on Water Consumption and Yield of Millet in Rain-fed Semiarid Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 05 Page number: 29-33 Column: Public date: 2012-10-20

Title:: Effects of Different Mulching Methods on Water Consumption and Yield of Millet in Rain-fed Semiarid Area

Author(s):: ZHANG Xiao-hong¹, ZHANG Xu-cheng^2,3; 1. Huining Center of Agricultural Technology Extension, Huining, Gansu 730700, China;
2. Key Laboratory of Northwest Crop Drought-resistant Farming, Ministry of Agriculture, PRC, Gansu Academy of Agriculture Sciences, Lanzhou 730070, China;
3. College of Resources and Environment, China Agricultural University, Beijing 100094, China

Keywords:: rain-fed semiarid area; whole field surface plastic mulching; soil water content; yield; millet

CLC:: S516

DOI:: -

Abstract:: In order to understand the effects of different mulching methods on water consumptive characteristics and yield of millet, the two-year field experiment involved in three treatments: whole field surface plastic mulching and soil covered on plastic film(PMS), whole field surface plastic mulching(PM) and uncovered treatment(CK), were carried out. The growth stages, seasonal change of soil water content in 0-200 cm soil profile, dynamics of aboveground biomass, grain yield and water consumption of millet were measured in this field experiment. The results showed that the plastic mulching shortened the vegetative growth stage, elongated reproductive growth stage, caused the whole growth stage to shorten. The growth stage of millet in PMS treatment shortened by 12~13 days and elongated by 10～11 days compared with CK and PM treatment, respectively. The soil water content in 0-200 cm profile increased in PM and PMS treatment before millet heading, the vegetative growth of millet also was promoted compared with CK. With the millet growth, there was a significant difference in water consumption between three treatments, which followed the sequence as PM>PMS>CK. Conversely, the change of soil water storage followed the sequences as CK>PMS>M. Before millet heading, the aboveground biomass in PM treatment was higher than that in PMS treatment, and was lowest in CK. However, the aboveground biomass in PMS treatment was significant higher than those in PM and CK, and it was also lowest in CK in harvest stage. The yield of millet in PM and PMS treatment increased by 83.53% and 64.56%, 115.51% and 84.47% in 2009 and 2010, respectively, compared with CK. Additionally, the yield of millet in PMS treatment increased by 17.42% and 18.18% in 2009 and 2010, respectively, compared with PM treatment. However, the soil water consumption was not significantly different between PMS and PM treatments in both experimental years. was indicated that plastic mulching decreased soil surface evaporation, which was an efficient way to increase millet yield and water use efficiency(WUE). Selecting the appropriate mulching method could regulate millet developmental and water consumptive process, which is also important to increase yield and water use efficiency of millet.

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