“yield decrease”

Claim · model-written summary

Rice yield tended to decrease as continual direct sowing continued and soil nitrogen supply fell.

Taxon

riceOryza sativae0

Treatment

continuance of direct sowing culturee0

Outcome

rice yielde0

Direction

decreasee0

Qualifier

fall of nitrogen supplying potentiality of soile0

Verbatim

e0

“There was observed a tendency of rice yield decrease by the continuance of direct sowing culture accompanied with the fall of nitrogen supplying potentiality of soil”

Claim · model-written summary

The authors concluded that falling soil nitrogen supply was one cause of rice yield decline.

Outcome

yield decreasee0

Qualifier

fall of nitrogen supplying potentiality of soile0

Not reportedTaxon

Verbatim

e0

“the fall of nitrogen supplying potentiality of soil must be one of the causes of the yield decrease in the continuous direct sowing culture”

Claim · model-written summary

Soil total nitrogen and total carbon decreased in successive years of continual direct sowing.

Treatment

continual direct sowing culturee0

Outcome

contents of total nitrogen and total carbon in the soile0

Direction

decreasede0

Not reportedTaxon

Verbatim

e0

“Both the contents of total nitrogen and total carbon in the soil decreased according to the succeeding year under the continual direct sowing culture”

Claim · model-written summary

Soil organic nitrogen ammonification tended to decline with continual direct sowing.

Treatment

continuance of direct sowing culturee0

Outcome

ammonification of organic nitrogen in the soile0

Direction

decreasinge0

Not reportedTaxon

Verbatim

e0

“There was a decreasing tendency in the ammonification of organic nitrogen in the soil (temperature-raising effect and pre-drying effect in ammonification), by the continuance of direct sowing culture”