湖北省蚕桑主产区桑园施肥状况调查  

Investigation of Fertilization on Mulberry in Main Product Area of Hubei Province

作　　者：鲁剑巍[1] 陈防[2] 万运帆[3] 张竹青[4] 

机构地区：[1]华中农业大学资源与环境学院,武汉430070 [2]中国科学院武汉植物园/武汉植物研究所,武汉430074 [3]湖北省农业科学院植保土肥研究所,武汉430064 [4]长江大学,荆州434025

出　　处：《中国农学通报》2005年第12期233-235,267,共4页Chinese Agricultural Science Bulletin

基　　金：湖北省重点科研项目(编号2001AA201C09)加拿大钾磷肥研究所(PPI/PPIC)合作项目(编号Hub-20)

摘　　要：对湖北省蚕桑主产区44个有代表性的桑园养分管理现状进行了调查。结果表明:主产区桑园 施用有机肥的比例为75．0％,所有桑园均施用一的化肥。全省桑园氮(N)、磷(P2O5)、钾(K2O)平均施用 量分别为453．0、114．0和175．5 kg/hm2,其中由有机肥提供的氮、磷、钾分别占总投入的25．5％、69．7％ 和87．2％,养分施用的N:P2O5:K2O比例为1:0．25:0．39。鄂东蚕区的肥料用量明显高于鄂北和鄂西南蚕 区。桑园NPK养分投入量相差很大:施氮(N)量>600 kg/hm2的桑园比例为15．9％,而22．7％的桑园年 施氮量<150 kg/hm2;施磷(P2O5)量>225 kg/hm2的桑园比例为6．8％,施磷<75 kg/hm2或不施磷的桑园 比例为22．7％;施钾(K2O)量>300 kg/hm2的样本比例占15．9％,而全年未施钾肥的桑园比例高达 25．0％。湖北省桑园全年施肥次数以1次和2次的比例最高,分别为25．0％和63．6％,反映出桑园施肥 次数偏少。An investigation of nutrients management on mulberry was carried out including 44 mulberry orchards distributed in main product area in Hubei province. It was showed that 75.0 and 100 percent mulberry orchards was applied organic manure and inorganic fertilizer. The average N, P2O5 and K2O application rates were 453.0kg/hm^2, 114.0kg/hm^2 and 175.5kg/hm^2, respectively, which ratio was 1：0.25：0.39. Organic resource N, P and K account for 25.5%, 69.7% and 87.2%. The result illuminated that N, P and K applied rates in east Hubei were larger than that of in other main area. The results showed that N application rate over 600 kg/hm^2 orchards was 15.9 percent while below 150 kg/hm^2 was 22.7 percent, P2O5 application rate over 225 kg/hm^2 orchards was 6.8 percent while below 75 kg/hm^2 was 22.7 percent, and K2O application rate over 300 kg/hm^2 orchards was 15.9 percent while no 22.7 percent orchards without any K applied. The investigation demonstrated that 25.5 and 63.6 percent orchards applied fertilizer once and twice in whole year which reflected mulberry fertilization times was too few.

关 键 词：湖北省 桑园 养分管理 氮(N) 磷(P2O5) 钾(K2O) 

分 类 号：S888.4[农业科学—特种经济动物饲养] F326.11[农业科学—畜牧兽医]