Effects of Different Film Mulching Treatments on Soil Moisture, Temperature and Growth of Flue-cured Tobacco in Cold Mountainous Area

doi:10.11924/j.issn.1000-6850.casb2022-0957

Abstract

Abstract:

Field experiments were conducted to study the effects of different mulching methods on the hydrothermal effects, agronomic traits and yield quality of flue-cured tobacco soils in cold and cool mountainous areas of the plateau of Zhaotong City. The following 4 treatments were conducted: black plastic film mulching on ridges (RC), reflective plastic film mulching on ridges (RF), black-white bilayer films mulching on ridges (BF) and black plastic film mulching on ridges and white plastic film mulching on furrows (FF). The results showed that during the early growth period of flue-cured tobacco field, soil temperature in the treatments of FF and BF increased by 0.47-0.80 and 0.23-0.34℃ respectively compared with RC. Soil temperature in the treatments of RF decreased by 0.49-0.73℃ compared with RC. Soil moisture in the treatments of FF and BF increased by 2.46%-4.76% and 0.63%-2.45% respectively compared with RC，soil moisture in the treatments of RF decreased by 0.01%-0.19% compared with RC. During the seedling stage, the soil moisture decrease rate could be expressed as power function of time, which of FF and BF was less than RC. In topping period, the agronomic characters of biomass, plant height, stem diameter, leaf number and leaf area coefficient in the treatments of BF were higher than those of RC, and yield and output value increased by 1.14% and17.77% specifically. In summary, mulch film covering significantly improves soil temperature and humidity, and double-layer film covering has a good effect on flue-cured tobacco yield improvement, which was suitable for promotion and application in flue-cured tobacco planting in cold and cool mountainous areas.

Key words: plastic film mulching, cold mountainous area, water and heat effect, the flue-cured tobacco, agronomic characters

HUANG Yunzhi, SONG Pengfei, JI Zeshun, SHEN Zhong, MA Xiang, HUANG He, YU Fengtang, YANG Yong, FU Bin, WANG Chi, SHI Jian. Effects of Different Film Mulching Treatments on Soil Moisture, Temperature and Growth of Flue-cured Tobacco in Cold Mountainous Area[J]. Chinese Agricultural Science Bulletin, 2023, 39(33): 92-98.

Figures/Tables 6

References 20

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处理	株高/ cm	茎围/ cm	叶片数/ cm	上部叶 (叶长×叶宽) /cm	中部叶 (叶长×叶宽) /cm	下部叶 (叶长×叶宽) /cm	单叶面积/ cm²	叶面积系数	生物产量/(g/株)
处理	株高/ cm	茎围/ cm	叶片数/ cm	上部叶 (叶长×叶宽) /cm	中部叶 (叶长×叶宽) /cm	下部叶 (叶长×叶宽) /cm	单叶面积/ cm²	叶面积系数	根	茎	叶
RC	109.4ab	10.8b	17.0b	59.2×17.0	76.8×23.7	63.8×28.4	988ab	2.777b	60a	73b	157a
RF	105.8b	10.7b	16.2c	54.5×18.3	73.2×24.7	62.2×27.2	949b	2.537c	50b	74b	146b
BF	111.6a	11.5a	18.6a	64.8×18.8	81.0×23.8	68.2×32.1	1130a	3.473a	60a	88a	159a
FF	107.4ab	11.3a	19.2a	63.6×17.4	76.8×23.3	63.3×31.8	1042a	3.306a	50b	69b	157a

处理	株高/ cm	茎围/ cm	叶片数/ cm	上部叶 (叶长×叶宽) /cm	中部叶 (叶长×叶宽) /cm	下部叶 (叶长×叶宽) /cm	单叶面积/ cm²	叶面积系数	生物产量/(g/株)
处理	株高/ cm	茎围/ cm	叶片数/ cm	上部叶 (叶长×叶宽) /cm	中部叶 (叶长×叶宽) /cm	下部叶 (叶长×叶宽) /cm	单叶面积/ cm²	叶面积系数	根	茎	叶
RC	109.4ab	10.8b	17.0b	59.2×17.0	76.8×23.7	63.8×28.4	988ab	2.777b	60a	73b	157a
RF	105.8b	10.7b	16.2c	54.5×18.3	73.2×24.7	62.2×27.2	949b	2.537c	50b	74b	146b
BF	111.6a	11.5a	18.6a	64.8×18.8	81.0×23.8	68.2×32.1	1130a	3.473a	60a	88a	159a
FF	107.4ab	11.3a	19.2a	63.6×17.4	76.8×23.3	63.3×31.8	1042a	3.306a	50b	69b	157a

处理	产量/(kg/hm²)	产值/(元/hm²)	上等烟比例/%	中等烟比例/%
RC	2359a	48896b	49.25	47.01
RF	2197b	47704b	38.00	44.93
BF	2385a	57586a	57.67	38.32
FF	2362a	48804b	49.02	47.60

处理	产量/(kg/hm²)	产值/(元/hm²)	上等烟比例/%	中等烟比例/%
RC	2359a	48896b	49.25	47.01
RF	2197b	47704b	38.00	44.93
BF	2385a	57586a	57.67	38.32
FF	2362a	48804b	49.02	47.60