Abstract
This study was to set up a new model for good quality and high yield evaluation of water-saving watermelon cultivation in the arid regions of northwest China. The coupling effects of water and fertilizers on plant growth, yield and fruit quality of watermelon under plastic film mulch using drip irrigation were studied in a field experiment. Nine treatments were designed including three irrigation amount levels(W1, 450 m3/hm2; W2, 900 m3/hm2; and W3, 1350 m3/hm2) and three fertilizer levels(F1, N 81.53 kg/hm2+ P2O5 33.43 kg/hm2+ K2O 101.09 kg/hm2; F2, N 163.05 kg/hm2+ P2O5 66.85 kg/hm2+ K2O 202.18 kg/hm2; and F3, N 244.58 kg/hm2+ P2O5 100.28 kg/hm2+ K2O 303.27 kg/hm2). The results indicated that at the same fertilizer level, plant height increased but stem diameter decreased with increasing irrigation quantity. Compared with the other treatments, F2W2 showed much higher chlorophyll content in each growth stage. In the seedling stage, treatments with increased supplying of water and fertilizer gave rise to increases in leaf net photosynthetic rate and transpiration rate, and the net photosynthetic rate and transpiration rate in leaf were not significantly different between F2W2 and the other treatments. After the flowering stage, F2W2 treatment revealed a relatively high photosynthesis(with no significant difference with F3W3) in leaves, leading to the highest fruit yield(which was 3.6% higher than F3W3) and the highest water use efficiency(35.73% higher than F3W3) at the end of the experiment. For the fruit quality, F2W1 treatment and F3W2 treatment showed the highest soluble sugar content and total vitamin C content(but no significant difference with F2W2), respectively. The F2W2 treatment revealed the best performance with high content of total soluble solids(TSS), soluble protein and lycopene in fruits as well as good sugar acid ratio and excellent taste. The supply of water and fertilizer in the F2W2 treatment could meet needs for the watermelon growth, making plant grow strongly(with high photosynthesis capability in leaves and good quality as well as high yield in fruits) by economical irrigation water use efficiency. So, the F2W2 treatment was recommended as the best combination of water and fertilizer for the production of watermelon under drip irrigation and plastic film mulch in the arid area of northwest China.
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Claims 13
Claim · model-written summary
At each fertilizer level, watermelon plant height increased with irrigation quantity.
- Taxon
- watermelon
Citrullus lanatuse1 - Treatment
- increasing irrigation quantitye0
- Outcome
- plant heighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the same fertilizer level, plant height increased but stem diameter decreased with increasing irrigation quantity”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
At each fertilizer level, watermelon stem diameter decreased with irrigation quantity.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- increasing irrigation quantitye0
- Outcome
- stem diametere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the same fertilizer level, plant height increased but stem diameter decreased with increasing irrigation quantity”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W2 had higher watermelon chlorophyll content at each growth stage than other treatments.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- F2W2e0
- Outcome
- chlorophyll contente0
- Direction
- much highere0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the other treatments, F2W2 showed much higher chlorophyll content in each growth stage”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
In seedlings, increased water and fertilizer raised watermelon leaf photosynthesis and transpiration.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- increased supplying of water and fertilizere0
- Outcome
- leaf net photosynthetic rate and transpiration ratee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the seedling stage, treatments with increased supplying of water and fertilizer gave rise to increases in leaf net photosynthetic rate and transpiration rate”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W2 seedling photosynthesis and transpiration did not significantly differ from other treatments.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- F2W2e0
- Outcome
- net photosynthetic rate and transpiration rate in leafe0
- Direction
- not significantly differente0
- Comparator
- the other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“net photosynthetic rate and transpiration rate in leaf were not significantly different between F2W2 and the other treatments”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
After flowering, F2W2 leaves had relatively high photosynthesis without a significant difference from F3W3.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- F2W2 treatmente0
- Outcome
- photosynthesise0
- Direction
- relatively highe0
- Comparator
- F3W3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the flowering stage, F2W2 treatment revealed a relatively high photosynthesis(with no significant difference with F3W3) in leaves”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W2 yielded 3.6% more watermelon fruit than F3W3.
- Taxon
- watermelonCitrullus lanatuse2
- Treatment
- F2W2 treatmente1
- Outcome
- fruit yielde0
- Direction
- highere0
- Value
- 3.6%e0
- Comparator
- F3W3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest fruit yield(which was 3.6% higher than F3W3)”
e1“The F2W2 treatment revealed the best performance”
e2“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W2 water-use efficiency was 35.73% above F3W3.
- Taxon
- watermelonCitrullus lanatuse2
- Treatment
- F2W2 treatmente1
- Outcome
- water use efficiencye0
- Direction
- highere0
- Value
- 35.73%e0
- Comparator
- F3W3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest water use efficiency(35.73% higher than F3W3)”
e1“The F2W2 treatment revealed the best performance”
e2“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W1 produced the highest soluble sugar content, without significant difference from F2W2.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- F2W1 treatmente0
- Outcome
- soluble sugar contente0
- Direction
- higheste0
- Comparator
- F2W2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F2W1 treatment and F3W2 treatment showed the highest soluble sugar content and total vitamin C content(but no significant difference with F2W2), respectively”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F3W2 produced the highest vitamin C content, without significant difference from F2W2.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- F3W2 treatmente0
- Outcome
- total vitamin C contente0
- Direction
- higheste0
- Comparator
- F2W2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F2W1 treatment and F3W2 treatment showed the highest soluble sugar content and total vitamin C content(but no significant difference with F2W2), respectively”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W2 gave strong soluble solids, protein and lycopene content in watermelon fruit.
- Taxon
- watermelonCitrullus lanatuse1
- Treatment
- F2W2 treatmente0
- Outcome
- total soluble solids(TSS), soluble protein and lycopenee0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F2W2 treatment revealed the best performance with high content of total soluble solids(TSS), soluble protein and lycopene in fruits”
e1“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
F2W2 gave a good sugar-acid ratio and excellent watermelon taste.
- Taxon
- watermelonCitrullus lanatuse2
- Treatment
- F2W2 treatmente1
- Outcome
- sugar acid ratio and excellent tastee0
- Direction
- goode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“good sugar acid ratio and excellent taste”
e1“The F2W2 treatment revealed the best performance”
e2“fruit quality of watermelon under plastic film mulch”
Claim · model-written summary
The authors recommend F2W2 for drip-irrigated watermelon production under plastic film mulch in arid northwest China.
- Taxon
- watermelonCitrullus lanatuse0
- Outcome
- best combination of water and fertilizer for the production of watermelone0
- Setting
- arid area of northwest Chinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“F2W2 treatment was recommended as the best combination of water and fertilizer for the production of watermelon under drip irrigation and plastic film mulch in the arid area of northwest China”
The same questions in other papers
irrigation · growth · Citrullus lanatus (watermelon)Positive and negative results
8 papers in the same direction as this paper · 6 in the opposite direction
- negative
- no effect
- negative
11 papers more in this group
See all 15 papers →fertilization · physiology: photosynthesis · Citrullus lanatus (watermelon)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.