|Table of Contents|

Effects of Reduced Chemical Fertilization and Organic Fertilizer Supplement on Growth and Quality of Early-spring Watermelon in Large Arch Shed

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年23
Page:
48-56
Research Field:
Publishing date:

Info

Title:
Effects of Reduced Chemical Fertilization and Organic Fertilizer Supplement on Growth and Quality of Early-spring Watermelon in Large Arch Shed
Author(s):
GU Duanyin; JIAO Juan; LIU Zhongliang; YAN Weiqiang; GAO Junjie
(Vegetable Institute,Tai′an Academy of Agricultural Sciences,Tai′an,Shandong 271000)
Keywords:
reduced chemical fertilization; organic fertilizer supplement; large arch shed; watermelon; physiological characteristics; yield; quality
PACS:
-
DOI:
10.11937/bfyy.20190573
Abstract:
The early spring watermelon growed in large arch shed was used as the test material in the field plot test,the experiment was carried out with the farmer′s normal fertilization treatment (T1),the different types and amounts of organic fertilizer (T2-T4) under the reduced fertilization,and the different types and dosages under the optimized fertilization (T5-T8) treatment of organic fertilizer to study the effects of different fertilization combinations on the growth,leaf and root physiological characteristics,yield and quality of early spring watermelon in large arch shed,in order to lay a theoretical foundation for the application of different types and amounts of organic fertilizer to replace fertilizer technology.The results showed that,compared with the constant fertilization T1 (chemical nutrients,15 kg N，15 kg P2O5，15 kg K2O)?(667m2)-1,the fertilization was reduced (chemical nutrients,10 kg N，10 kg P2O5，10 kg K2O)?(667m2)-1 with organic fertilizer (rice-hull manure,chicken manure,rice-hull manure+chicken manure) T2-T4 treatment promoted the elongation of watermelon main vine,increased content of chlorophyll a.Compared with the T1 and T5 (purified fertilizer treatments),the treatments with organic fertilizer significantly increased the root activity.Compared with T1,the yield of watermelon treated with T2 and T3 were improved,but it did not reach a significant level,and the optimized fertilization (chemical nutrients per 667 m2,7.64 kg N,5.11 kg P2O5,8.48 kg K2O) T5 and T6-T8 (rice-hull manure,chicken manure,rice-hull manure+chicken manure) decreased.Compared with the T1 and T5 with purified fertilizer,the reduction of chemical fertilizers combined with organic fertilizer increased the mass fraction of central and marginal soluble solids,and the application of organic fertilizer promoted the formation of organic acids.The ratio of sugar to acid in each treatment of optimized fertilization was at a relatively high level.Compared with the treatment of purified fertilizer,T1 and T5,the application of organic fertilizer increased the content of soluble protein,lycopene and citrulline in watermelon fruit,and decreased the content of nitrate in watermelon fruit.In summary,when the NPK reduction of chemical fertilizers was 33.3% and a certain amount of rice-hull manure and chicken manure were applied,the yield showed no increase significantly,but the dry matter accumulation of watermelon plants increased,and the flavor quality of watermelon improved.When the fertilizer nitrogen reduced 49.1%,the phosphorus 65.9% and the potassium 43.5%,and the amount of rice-hull manure and chicken manure was applied,the yield decreased significantly,but the nitrate content of watermelon decreased significantly.

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Last Update: 2019-12-19