Abstract
The experiment was completed in pool with Siza3(popularized cultivar in Jiangsu province)at Pailou experiment station in Nanjing Agricultural University.By simulating the short-term waterlogging during the flowering and boll forming stage,set five water treatments including one well-watering(soil relative water content was(75±5)%)and four waterlogging treatments(3,6,9,12days),this study aimed to assess the effects of waterlogging on soil microbe quantity,enzyme activity,nutrient content of two soil layers(0-20,20-40cm)and the accumulation of cotton biomass and yield.The results showed that the growth of the cotton plant height and biomass accumulation were inhibited significantly by waterlogging during the flowering and boll forming stage,and resulted in the reduction of seed cotton due to the decrease of the number of boll per plant and boll weight.With increasing the waterlogging days,the content of soil organic matter and total nitrogen accumulated for a certain degree,while the available nitrogen content reduced significantly,the number of soil fungi and actinomycetes had an obvious decreasing trend,while the variation of the number of bacteria was gentle.On the condition of waterlogging,soil urease,invertase and phosphatase activities gradually decreased,while soil catalase activity increased in certain amplitude.Except catalase,soil nutrient content,the number of soil microbe quantity and soil enzyme activity in 0-20cm layer was significantly higher than that in 20-40cm layer,and the variations of soil bio-indicators in 0-20cm layer were larger than that in 20-40cm layer basically.In summary,the soil microbe quantity and soil enzyme activity of two layers were extremely sensitive to waterlogging,and the low soil nutrient availability was not conducive to the accumulation of cotton biomass and yield.
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Claims 15
Claim · model-written summary
Waterlogging significantly inhibited cotton plant height growth.
- Taxon
- cotton
Gossypium hirsutume0 - Organ / stage
- flowering and boll forming stagee0
- Treatment
- waterlogginge0
- Outcome
- plant heighte0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of the cotton plant height and biomass accumulation were inhibited significantly by waterlogging during the flowering and boll forming stage”
Claim · model-written summary
Waterlogging significantly inhibited cotton biomass accumulation.
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- flowering and boll forming stagee0
- Treatment
- waterlogginge0
- Outcome
- biomass accumulatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass accumulation were inhibited significantly by waterlogging during the flowering and boll forming stage”
t0“Cotton”
Claim · model-written summary
Waterlogging reduced seed cotton yield.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- waterloggingt0
- Outcome
- seed cottone0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in the reduction of seed cotton due to the decrease of the number of boll per plant and boll weight”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Waterlogging decreased bolls per plant.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Waterloggingt0
- Outcome
- number of boll per plante0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease of the number of boll per plant and boll weight”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Waterlogging decreased boll weight.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Waterloggingt0
- Outcome
- boll weighte0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease of the number of boll per plant and boll weight”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Longer waterlogging increased soil organic matter.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- waterlogging dayse0
- Outcome
- soil organic mattere0
- Direction
- accumulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing the waterlogging days,the content of soil organic matter and total nitrogen accumulated for a certain degree”
t0“Cotton”
Claim · model-written summary
Longer waterlogging increased soil total nitrogen.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- waterlogging dayse0
- Outcome
- total nitrogene0
- Direction
- accumulatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing the waterlogging days,the content of soil organic matter and total nitrogen accumulated for a certain degree”
t0“Cotton”
Claim · model-written summary
Longer waterlogging significantly reduced available soil nitrogen.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Waterloggingt0
- Outcome
- available nitrogen contente0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the available nitrogen content reduced significantly”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Longer waterlogging decreased soil fungi and actinomycetes.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Waterloggingt0
- Outcome
- number of soil fungi and actinomycetese0
- Direction
- decreasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the number of soil fungi and actinomycetes had an obvious decreasing trend”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Soil bacteria numbers varied gently with waterlogging duration.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Waterloggingt0
- Outcome
- number of bacteriae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the variation of the number of bacteria was gentle”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Waterlogging gradually decreased soil urease, invertase and phosphatase activities.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- waterlogginge0
- Outcome
- soil urease,invertase and phosphatase activitiese0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the condition of waterlogging,soil urease,invertase and phosphatase activities gradually decreased”
t0“Cotton”
Claim · model-written summary
Waterlogging increased soil catalase activity.
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- Waterloggingt0
- Outcome
- soil catalase activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil catalase activity increased in certain amplitude”
t0“Waterlogging on Soil Fertility and Cotton Growth”
Claim · model-written summary
Most soil nutrient, microbial and enzyme measures were higher at 0-20cm than at 20-40cm.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- soil nutrient content,the number of soil microbe quantity and soil enzyme activitye0
- Direction
- highere0
- Qualifier
- Except catalasee0
- Comparator
- 20-40cm layere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except catalase,soil nutrient content,the number of soil microbe quantity and soil enzyme activity in 0-20cm layer was significantly higher than that in 20-40cm layer”
t0“Cotton”
Claim · model-written summary
Soil bio-indicator variation was larger at 0-20cm than at 20-40cm.
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- variations of soil bio-indicatorse0
- Direction
- largere0
- Comparator
- 20-40cm layere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the variations of soil bio-indicators in 0-20cm layer were larger than that in 20-40cm layer basically”
t0“Cotton”
Claim · model-written summary
Low soil nutrient availability was unfavorable for cotton biomass and yield accumulation.
- Taxon
- cottonGossypium hirsutume0
- Compound
- soil nutrient availabilitye0
- Outcome
- accumulation of cotton biomass and yielde0
- Direction
- not conducivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the low soil nutrient availability was not conducive to the accumulation of cotton biomass and yield”
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