Abstract
The micro plot experiment was conducted on the cinnamon soil in Xinxiang, Henan province during the period of 1992～1998. The zinc initial application could increase the effective tillering and the ear length of winter wheat(1st crop) . The increase of corn(2nd crop) yield characteristics including the number of grains in each ear, the ear length and the mean weight of 10,00 grains was also contributed to Zn initial application. Therefore, the increase in yield of the first crop (wheat) and the second crop(corn) with all Zn initial application rates was noticed in the wheat corn rotation system, suggesting that the residual effects of Zn initial application could last for only two years. The concentrations of soil DTPA Zn and Zn in crop grains with all Zn initial application rates were more than those of free Zn treatment .Moreover, with the cropping, The concentrations of soil DTPA Zn and Zn in crop grains decreased. The 30～60 kg/hm 2 ZnSO 4·7H 2O should be applied to the wheat corn rotation system in Zn deficient calcareous soils of North China every two years.
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Claims 10
Claim · model-written summary
Initial zinc increased effective tillering and ear length in winter wheat.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- zinc initial applicatione0
- Outcome
- effective tillering and the ear lengthe0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The zinc initial application could increase the effective tillering and the ear length of winter wheat(1st crop) .”
Claim · model-written summary
Initial zinc increased corn grain number per ear, ear length, and grain weight.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Zn initial applicatione0
- Outcome
- the number of grains in each ear, the ear length and the mean weight of 10,00 grainse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase of corn(2nd crop) yield characteristics including the number of grains in each ear, the ear length and the mean weight of 10,00 grains was also contributed to Zn initial application.”
Claim · model-written summary
All initial zinc rates increased first-crop wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- all Zn initial application ratese0
- Outcome
- yield of the first crop (wheat)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in yield of the first crop (wheat) and the second crop(corn) with all Zn initial application rates was noticed”
Claim · model-written summary
All initial zinc rates increased second-crop corn yield.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- all Zn initial application ratese0
- Outcome
- second crop(corn)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in yield of the first crop (wheat) and the second crop(corn) with all Zn initial application rates was noticed”
Claim · model-written summary
Residual effects of initial zinc lasted only two years in the rotation.
- Taxon
- wheatTriticum aestivume1
- Outcome
- residual effects of Zn initial application could last for only two yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the residual effects of Zn initial application could last for only two years.”
e1“in the wheat corn rotation system”
Claim · model-written summary
Soil DTPA zinc concentrations were higher after initial zinc than after zinc-free treatment.
- Taxon
- wheatTriticum aestivume1
- Treatment
- all Zn initial application ratese0
- Outcome
- soil DTPA Zne0
- Direction
- more thane0
- Comparator
- free Zn treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of soil DTPA Zn and Zn in crop grains with all Zn initial application rates were more than those of free Zn treatment .”
e1“in the wheat corn rotation system”
Claim · model-written summary
Crop grain zinc concentrations were higher after initial zinc than after zinc-free treatment.
- Taxon
- wheatTriticum aestivume1
- Treatment
- all Zn initial application ratese0
- Outcome
- Zn in crop grainse0
- Direction
- more thane0
- Comparator
- free Zn treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of soil DTPA Zn and Zn in crop grains with all Zn initial application rates were more than those of free Zn treatment .”
e1“in the wheat corn rotation system”
Claim · model-written summary
Soil DTPA zinc concentration decreased with cropping.
- Taxon
- wheatTriticum aestivume1
- Outcome
- soil DTPA Zne0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the cropping, The concentrations of soil DTPA Zn and Zn in crop grains decreased.”
e1“in the wheat corn rotation system”
Claim · model-written summary
Crop grain zinc concentration decreased with cropping.
- Taxon
- wheatTriticum aestivume1
- Outcome
- Zn in crop grainse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the cropping, The concentrations of soil DTPA Zn and Zn in crop grains decreased.”
e1“in the wheat corn rotation system”
Claim · model-written summary
The authors recommend 30～60 kg/hm 2 ZnSO 4·7H 2O every two years for wheat-corn rotation in deficient North China soils.
- Taxon
- wheatTriticum aestivume0
- Outcome
- 30～60 kg/hm 2 ZnSO 4·7H 2O should be applied to the wheat corn rotation system in Zn deficient calcareous soils of North China every two yearse0
- Setting
- North Chinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 30～60 kg/hm 2 ZnSO 4·7H 2O should be applied to the wheat corn rotation system in Zn deficient calcareous soils of North China every two years.”
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