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- Title
EFFECTS OF POLY-G-GLUTAMIC ACID SUPER ABSORBENT POLYMER ON SOIL MICROENVIRONMENT AND GROWTH OF WINTER WHEAT.
- Authors
GUO, J. Z.; ZHANG, K. P.; ZHANG, J. J.; LI, S.; ZHANG, Y. K.
- Abstract
Poly--glutamic acid super absorbent polymer (1-PGA SAP) is a novel type of SAP synthesized by 1-PGA. To study the effect of 1-PGA SAP on the growth of winter wheat and the microenvironment of the soil root zone, five levels of 1-PGA SAP addition (0, 40 kg/hm2, 80 kg/hm2, 120 kg/hm2, 160 kg/hm2) and three different irrigation levels (270 mm, 229.5 mm, and 189 mm) were set in the field. The average soil water content of each treatment increased gradually with increasing 1-PGA SAP addition. The number of soil microorganisms and the activities of soil enzymes increased with increasing 1-PGA SAP addition. The wheat yields without 1-PGA SAP addition were 5873.08 kg/hm2 (270 mm), 5081.65 kg/hm2 (229.5 mm) and 4181.41 kg/hm2 (189 mm) in three different irrigation levels, respectively. Wheat yield increased with increasing 1-PGA SAP addition. The yield of winter wheat increased by 9.00% (270 mm), 17.94% (229.5 mm) and 26.31% (189 mm) respectively compared with the control group when the 1-PGA SAP addition was 160kg/hm2. However, the increasing rate of wheat yield decreased when the 1-PGA SAP addition was more than 80 kg/hm2.
- Subjects
WINTER wheat; POLYMERIC sorbents; SUPERACIDS; SOIL moisture; SOIL microbiology
- Publication
Applied Ecology & Environmental Research, 2023, Vol 21, Issue 3, p2457
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/2103_24572475