Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (22): 76-83.doi: 10.11924/j.issn.1000-6850.casb2020-0564

Special Issue: 农业气象

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Effects of Jiaosu on Soil Physical and Chemical Properties and Crop Growth in Tropical Region

Fan Heling(), Wang Haochen, Chen Weiyi, Lu Jianming, Sun Xuebing, Zhu Qing, Li Changjiang, Zhang Rongping()   

  1. College of Tropical Crops, Hainan University, Haikou 570228
  • Received:2020-10-17 Revised:2020-12-30 Online:2021-08-05 Published:2021-08-26
  • Contact: Zhang Rongping E-mail:664580513@qq.com;zhangrp75@163.com

Abstract:

To explore the effects of Jiaosu compost and liquid fertilizer on the regulation of soil physical and chemical properties, and crop growth in tropical region, a series of pot and field experiments were carried out in Hainan to study the effects of Jiaosu compost materials, application amount, biofertilizer types, Jiaosu solution and their materials on pepper and cucumber. The results show that (1) the soil organic matter under treatments with Jiaosu could reach 2.55%-3.87%, increase the content of available nitrogen, phosphorus, potassium, pH and field water capacity, and reduce the bulk density, meanwhile, the peanut straw treatment is the best composting material, and the more application amount of the peanut straw is better; (2) the fruit weight under Jiaosu treatment could be increased by 53%-92% compared with the traditional treatment, the Vc content of fruit under Jiaosu treatment is 1.12 times as much as that of the traditional fertilization treatment, and the economic coefficient under Jiaosu compost treatment is over 48%, 8%-28% higher than that of the traditional fertilization treatment; compared with Hainan bio-fertilizer, the fruit weight under Jiaosu compost treatment could be increased by 24% and the Jiaosu solution increases fruit weight by 20%-38% of cucumber; (3) Jiaosu compost and liquid fertilizer treatment could significantly increase defense enzyme activity of plants and decrease withering rate and withering index of pepper under drought and cold injury compared with chemical fertilizer treatment, and reduce pest index significantly of cucumber. So the study reveals that Jiaosu compost and liquid fertilizer could not only improve the physical and chemical properties of soil, but also obtain better quality, high yield, high resistance, safe and ecological production of tropical crops, which is benefit to the sustainable development of modern green agriculture in tropical areas.

Key words: Jiaosu, tropical region, physical and chemical properties of soil, crop growth, integrative resistance

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