Effects of Tillage,Moisture Conservation on Water Use and Yield in Wheat at Different Growth Stages

doi:10.7668/hbnxb.2016.03.027

Abstract

Abstract: To develop the better practices of tillage,moisture conservation and soil improvement for improving water use at different growth stages of wheat,a field experiment was conducted to investigate the effects of the conventional tillage (CK),subsoiling,straw mulching,super absorbent polymer (SAP) and organic fertilizer on water consumption,dry biomass accumulation and water utilization at different growth stages of wheat.The results showed that:at the different growth stages of wheat,the treatments of straw mulching and subsoiling were better in preserving soil moisture.During the whole growth period of wheat,the water consumption of the treatment of organic fertilizer was the largest in all treatments,while the consumption of the treatments of subsoiling and straw mulch was less compared with other treatments.Before jointing stage of wheat,the treatment of organic fertilizer was more advantageous to the accumulation of dry biomass.From jointing to booting stage,dry biomass of the treatments of SAP and subsoiling were higher than other treatments.After flowering growth stage and at the whole growth period,dry biomass of the treatment of straw mulching was the highest compared with other treatments.And in addition to regreening-jointing and booting-flowering stage,water use efficiency at different growth stages of the treatment of straw mulching was still the highest.The water production efficiency and the water production efficiency of the treatment of straw mulching was still highest,increased by 50.9% and 11.7 kg/(mm · ha) respectively,compared with the CK.The results of this study showed that the straw mulching could improve the water environment at different growth stages of wheat,so as to improve the yield and water utilization of wheat.

Key words: Tillage, Soil moisture, Growth stage, Dry biomass, Water use

CLC Number:

S512.01

YANG Yonghui, WU Jicheng, ZHANG Yuting, PAN Xiaoying, DING Jinli, ZHANG Jiemei, HE Fang, WANG Yue. Effects of Tillage,Moisture Conservation on Water Use and Yield in Wheat at Different Growth Stages[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(3): 184-190. doi: 10.7668/hbnxb.2016.03.027.

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