|Table of Contents|

Effects of Plastic Mulching on Soil Moisture Conservation, Temperature Improvement and Soybean Yield Increase in Dryland of Northwest China(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2016年01期
Page:
58-63
Research Field:
Publishing date:

Info

Title:
Effects of Plastic Mulching on Soil Moisture Conservation, Temperature Improvement and Soybean Yield Increase in Dryland of Northwest China
Author(s):
CHEN Qi-xian1; 2;  WANG Ben-hui3;  LIU Lu-ping1;  ZHOU De-lu2;  HAN Tian-fu1;  WU Cun-xiang1
1. Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
2.Gansu General Station of Agrotechnology Extension, Lanzhou 730020, China;
3.Qingcheng Agricultural Technology Extension Center, Qingcheng 745600, China
Keywords:
Soybean;  Plastic mulching;  Soil moisture;  Temperature;  Dryland
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2016.01.0058
Abstract:
Mulching is an effective way for alleviating the stresses of limiting factors including drought and low spring temperature in soybean production of Northwest China. In order to investigate the application consequences of different plastic mulching in soybean production, we used soybean cv. Zhonghuang 41 as material and conducted five mulching treatments: Full mulching on double ridges and furrows (FMDRF); Full flat-mulching with soil covering (FFMSC); Full flat-mulching with no soil covering (FFMNSC); Half flat-mulching (HFM); No mulching on flat land (NM).The comparisons were made between different mulching in the effects on soil moisture, temperature and soybean yield. The results showed that mulching had significant effect on soil moisture and temperature at various growth stages of soybean. At the seedling stages the soil moisture in FMDRF was slightly higher than in FFMSC and FFMNSC, but it was significantly higher than in HFM and NM. From branching to podding stages, differences of the treatments in soil moisture became even greater than in seedling stage. The moisture content in FFMSC, FMDRF and FFMNSC was 15.6%-16.8%, 15.1%-17.1% and 14.4%-17.1% respectively, with increasing 2.5-5.1 percentage points compared to NF and 2.0-4.2 percentage points to HFM. Concerning the soil temperature, it was 2.0-4.6℃ and 2.9-5.1℃ higher in FMDRF than that in HFM and NM at seedling stage. At branching stage, the soil temperature in FMDRF was 1.6-2.9℃ and 2.6-4.5℃ higher than in HFM and NM, respectively. At the flowering stage, it was 0.9-2.3℃ and 3.5-5.2℃ higher in FMDRF than in HFM and NM. Soybean yield in FMDRF was the highest among the treatments and it was 45.78% higher than that in NM. It could be drawn that plastic mulching improved the soil moisture and the temperature, resulting in yield increase in soybean. FMDRF performed best in soybean yield among the mulching modes because of its unique water channeling and depositing functions in dryland.

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Last Update: 2016-01-28