Abstract
The relay-sowing system of maize-soybean is a new cultivation technique in hilly area of southwest China. Field experiments were conducted to determine the optional preceding crop and nitrogen fertilizer. Four different interplanting preceding crops of wheat( A1),peas( A2),beans( A3) and potato( A4) and 0 kg·hm- 2( B1),30 kg·hm- 2( B2) and 60 kg·hm- 2( B3)three kinds of nitrogen levels were set to analyze the effect on soybean agronomic traits,dry matter accumulation and yield. The results showed that among the different preceding crops treatments,the yield of soybean increased with the treatment of preceding crop beans. Under the conditions of preceding crop beans,the soybean reached the highest yield,followed by treatment peas.Compared with its preceding crop wheat( A1),the treatment of peas and beans increased the soybean stem diameter,number of branches and dry matter accumulation of period R2,R8,decreased plant height. Among four preceding crops treatments,compared with the preceding crop wheat,under the conditions of preceding crop beans( A3) the soybean stem diameter increased3. 5%,number of branches per plant increased 5. 9%,dry matter accumulation increased 5. 7%,the soybean yield exceeded197. 94 kg·ha- 1. Plant height,number of branches and plant dry matter accumulation of soybean increased with the increas of nitrogen level in different preceding crops treatments. Effects of the different nitrogen fertilizer treatments on the different preceding crops were different. Under the treatmens of preceding crop broad bean and pea,the plant height,number of branches and plant dry matter accumulation increased with increasing nitrogen level. Under the preceding crops treatments of peas and beans,soybean field with increasing nitrogen rate increased firstly and then decreased. It can reach the highest field with the nitrogen level 30 kg·ha- 1Proceding crops treatments of wheat and potato,the soybean field with increasing amount of nitrogen is increased,The hightest field of soybean combination was A3B2. It was benefical to improve the dry matter accumulation and yield in relay-sowing system of maize and soybean with proper preceding crop( beans) and proper nitrogen fertilizer level( 30 kg·ha- 1).
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Claims 15
Claim · model-written summary
Soybean yield increased with preceding crop beans among the preceding crop treatments.
- Taxon
- soybean
Glycine maxe0 - Treatment
- preceding crop beanse0
- Outcome
- yield of soybeane0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield of soybean increased with the treatment of preceding crop beans”
Claim · model-written summary
Under preceding crop beans soybean reached the highest yield, followed by preceding crop peas.
- Taxon
- soybeanGlycine maxe0
- Treatment
- preceding crop beanse0
- Outcome
- highest yielde0
- Direction
- higheste0
- Comparator
- treatment pease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the conditions of preceding crop beans,the soybean reached the highest yield,followed by treatment peas”
Claim · model-written summary
Compared with preceding crop wheat, preceding crops peas and beans increased soybean stem diameter, number of branches and dry matter accumulation at R2 and R8.
- Taxon
- soybeanGlycine maxe0
- Treatment
- the treatment of peas and beanse0
- Outcome
- stem diameter,number of branches and dry matter accumulatione0
- Direction
- increasede0
- Comparator
- preceding crop wheat( A1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with its preceding crop wheat( A1),the treatment of peas and beans increased the soybean stem diameter,number of branches and dry matter accumulation of period R2,R8,decreased plant height”
Claim · model-written summary
Compared with preceding crop wheat, preceding crops peas and beans decreased soybean plant height.
- Taxon
- soybeanGlycine maxe0
- Treatment
- the treatment of peas and beanse0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Comparator
- preceding crop wheat( A1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with its preceding crop wheat( A1),the treatment of peas and beans increased the soybean stem diameter,number of branches and dry matter accumulation of period R2,R8,decreased plant height”
Claim · model-written summary
Under preceding crop beans, soybean stem diameter increased by 3.5% compared with preceding crop wheat.
- Taxon
- soybeanGlycine maxe0
- Treatment
- preceding crop beans( A3)e0
- Outcome
- stem diametere0
- Direction
- increasede0
- Value
- 3. 5%e0
- Comparator
- preceding crop wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared with the preceding crop wheat,under the conditions of preceding crop beans( A3) the soybean stem diameter increased3. 5%”
Claim · model-written summary
Under preceding crop beans, soybean number of branches per plant increased by 5.9% compared with preceding crop wheat.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- preceding crop beans( A3)e0
- Outcome
- number of branches per plante1
- Direction
- increasede1
- Value
- 5. 9%e1
- Comparator
- preceding crop wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“compared with the preceding crop wheat,under the conditions of preceding crop beans( A3)”
e1“number of branches per plant increased 5. 9%”
Claim · model-written summary
Under preceding crop beans, soybean dry matter accumulation increased by 5.7% compared with preceding crop wheat.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- preceding crop beans( A3)e0
- Outcome
- dry matter accumulatione1
- Direction
- increasede1
- Value
- 5. 7%e1
- Comparator
- preceding crop wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“compared with the preceding crop wheat,under the conditions of preceding crop beans( A3)”
e1“dry matter accumulation increased 5. 7%”
Claim · model-written summary
Under preceding crop beans, soybean yield exceeded that under preceding crop wheat by 197.94 kg per ha.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- preceding crop beans( A3)e0
- Outcome
- soybean yielde1
- Direction
- exceedede1
- Value
- 197. 94 kg·ha- 1e1
- Comparator
- preceding crop wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“compared with the preceding crop wheat,under the conditions of preceding crop beans( A3)”
e1“the soybean yield exceeded197. 94 kg·ha- 1”
Claim · model-written summary
Soybean plant height, number of branches and plant dry matter accumulation increased with increasing nitrogen level across preceding crop treatments.
- Taxon
- soybeanGlycine maxe0
- Treatment
- nitrogen levele0
- Outcome
- Plant height,number of branches and plant dry matter accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,number of branches and plant dry matter accumulation of soybean increased with the increas of nitrogen level in different preceding crops treatments”
Claim · model-written summary
Under preceding crops broad bean and pea, soybean plant height, number of branches and plant dry matter accumulation increased with increasing nitrogen level.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- increasing nitrogen levele0
- Outcome
- plant height,number of branches and plant dry matter accumulatione0
- Direction
- increasede0
- Qualifier
- preceding crop broad bean and peae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“Under the treatmens of preceding crop broad bean and pea,the plant height,number of branches and plant dry matter accumulation increased with increasing nitrogen level”
Claim · model-written summary
Under preceding crops peas and beans, soybean yield (written as field) first increased and then decreased with increasing nitrogen rate.
- Taxon
- soybeanGlycine maxe0
- Treatment
- increasing nitrogen ratee0
- Outcome
- soybean fielde0
- Direction
- increased firstly and then decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the preceding crops treatments of peas and beans,soybean field with increasing nitrogen rate increased firstly and then decreased”
Claim · model-written summary
Soybean yield (written as field) was highest at the nitrogen level of 30 kg per ha under preceding crops peas and beans.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- nitrogen level 30 kg·ha- 1e0
- Outcome
- highest fielde0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean”
e0“It can reach the highest field with the nitrogen level 30 kg·ha- 1”
Claim · model-written summary
Under preceding crops wheat and potato, soybean yield (written as field) increased with increasing amount of nitrogen.
- Taxon
- soybeanGlycine maxe0
- Treatment
- increasing amount of nitrogene0
- Outcome
- soybean fielde0
- Direction
- increasede0
- Qualifier
- Proceding crops treatments of wheat and potatoe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Proceding crops treatments of wheat and potato,the soybean field with increasing amount of nitrogen is increased”
Claim · model-written summary
The highest soybean yield (written as field) was obtained with the combination A3B2 (preceding crop beans with 30 kg per ha nitrogen).
- Taxon
- soybeanGlycine maxe0
- Treatment
- A3B2e0
- Outcome
- hightest fielde0
- Direction
- highteste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hightest field of soybean combination was A3B2”
Claim · model-written summary
The authors conclude that in the maize-soybean relay-sowing system, preceding crop beans with nitrogen at 30 kg per ha benefits soybean dry matter accumulation and yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- proper preceding crop( beans) and proper nitrogen fertilizer level( 30 kg·ha- 1)e0
- Outcome
- dry matter accumulation and yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was benefical to improve the dry matter accumulation and yield in relay-sowing system of maize and soybean with proper preceding crop( beans) and proper nitrogen fertilizer level( 30 kg·ha- 1)”
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