Effect of Green Manure Sowing Methods on the Nutrition Supply of Green Manure in Gaocong Tea Garden
FAN Wen-xing
WU Xing-yi
YUE Rong-xu
LUO Xu-hui
Abstract：The exploration on the effects of green manure monoculture and mixed sowing on the nutrient supply of green manure in Gaozong tea garden could provide the basis for the reduction of chemical fertilizer in Gaozong tea garden.Three treatments of the single sowing of Brassica napus,single sowing of Vicia benghalensis and mixed sowing of Brassica napus and Vicia benghalensis were set up in Gaozong tea garden in Xingtian Town,Wuyishan City.Then,the effects of green manure monoculture and mixed sowing on the above-ground dry matter yield,nutrient supply,land equivalent ratio and competition ratio of Brassica napus and Vicia benghalensis were studied.The results showed that the dry matter yield of green manure was as follows:the single sowing of Vicia benghalensis(1 554.36 g·m-2)>the single sowing of Brassica napus(881.75 g·m-2)>the mixed sowing of Brassica napus and Vicia benghalensis(725.16 g·m-2).The contents of nitrogen(N)and phosphorus(P2O5)in the single sowing of Vicia benghalensis were significantly higher than those in the single sowing of Brassica napus and the mixed sowing of Brassica napus and Vicia benghalensis,but the contents of carbon(C)and potassium(K2O)were not significantly different.The C supply amount ranged as the single sowing of Vicia benghalensis(503.23 g·m-2)>the single sowing of Brassica napus(432.82 g·m-2)>the mixed sowing of Brassica napus and Vicia benghalensis(265.79 g·m-2).The N supply amount ranged as the single sowing of Vicia benghalensis(47.43 g·m-2)>the mixed sowing of Brassica napus and Vicia benghalensis(18.68 g·m-2)>the single sowing of Brassica napus(17.81 g·m-2).The P2O5 supply amount ranged as the single sowing of Vicia benghalensis(6.42 g·m-2)>the single sowing of Brassica napus(4.88 g·m-2)>the mixed sowing of Brassica napus and Vicia benghalensis(3.71 g·m-2).The K2O supply amount ranged as the single sowing of Vicia benghalensis(16.90 g·m-2)>the single sowing of Brassica napus(9.31 g·m-2)>the mixed sowing of Brassica napus and Vicia benghalensis(7.60 g·m-2).The land equivalent ratio of Brassica napus and Vicia benghalensis mixed sowing was 0.65,and the competition ratios of Brassica napus and Vicia benghalensis were 1.52 and 0.66,respectively.The comprehensive analysis showed that the mixed sowing of Brassica napus and Vicia benghalensis reduced the above-ground dry matter yield of green manure.There was interspecific competition between Brassica napus and Vicia benghalensis,and the competitive advantage of Brassica napus was greater than that of Vicia benghalensis.Therefore,the single sowing mode of Vicia benghalensis should be adopted for the nutrient supply of green manure in Gaozong tea garden system.
Keywords：Green manureNutrition constitutionLand equivalent ratioTea garden
Publication Date：2025-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 60-65 )