不溶性钾矿产品部分替代氯化钾下晚稻钾素吸收特征  

Characteristics of K uptake by late rice under partially substitute of potassium chloride by insoluble potash products

作　　者：杨曾平[1,2] 聂军[1,2] 廖育林[1,2] 谢坚[1,2] 鲁艳红[1,2] 周兴[1,2,3] 黄科延 

机构地区：[1]湖南省土壤肥料研究所,湖南长沙410125 [2]农业部湖南耕地保育科学观测实验站,湖南长沙410125 [3]湖南农业大学资源与环境学院,湖南长沙410128 [4]长沙县大禾优质稻专业合作社,湖南长沙410132

出　　处：《中国土壤与肥料》2017年第2期87-94,共8页Soil and Fertilizer Sciences in China

基　　金：公益性行业(农业)科研专项(201203013);国家"十二五"科技支撑计划项目(2013BAD07B11)

摘　　要：在南方稻区通过大田试验研究不溶性钾矿产品—颗粒硅钙钾肥和多元素微孔矿物肥部分替代氯化钾对晚稻产量、经济效益以及对钾素吸收利用的影响。结果表明:施钾使晚稻增产200.4~577.4 kg/hm^2,40%颗粒硅钙钾肥替代氯化钾增产122.8 kg/hm^2,其他不溶性钾矿产品(颗粒硅钙钾肥、微孔矿物肥)替代氯化钾处理使晚稻减产191.5~254.2 kg/hm^2。施氯化钾和40%颗粒硅钙钾肥使晚稻增收574.7和465.7元/hm^2,不溶性钾矿产品部分替代氯化钾均降低晚稻产投比。施钾处理均能够提高晚稻累积吸钾量和吸钾总量。不溶性钾矿产品部分替代氯化钾对晚稻累积吸钾量和吸钾总量效果不明显,对晚稻钾素利用率的提高没有明显效果。南方稻区晚稻生产中不溶性钾矿产品可以部分替代氯化钾,但不能给当季晚稻生产带来良好的经济效益。Field experiment was conducted to study the effects of partially substitute of potassium chloride by insoluble potash products （granular Si-Ca-K fertilizer and multi element microporous mineral fertilizer） on yield of late rice, economic efficien- cy and K absorption and utilization in the southern rice region. The results showed that application of potassium increased the yield by 200.4 - 577.4 kg/hm2 , partially substitute of potassium chloride by 40% granular Si-Ca-K fertilizer increased the yield by 122. 8 kg/hm2 , and the other treatments which partially substitute of potassium chloride by insoluble potash products decreased the yield by 191.5 -254. 2 kg/hm2. Application of potassium chloride and 40% granular Si-Ca-K fertilizer increased the income of late rice by 574. 7and 465.7 yuan/hm2. Partially substitute of potassium chloride by insoluble potash products all decreased the output/input ratio of late rice. Application of potassium improved cumulative K uptake and total amount of K up- take of late rice. The effects of partially substitute of potassium chloride by insoluble potash products on cumulative K uptake and total amounts of K uptake of late rice were not obvious. Partially substitute of potassium chloride by insoluble potash prod- ucts had no significant effect in increasing K use efficiency. The insoluble potash products can partially substitute for potassium chloride in late rice production in the southern rice region, but can not bring good economic efficiency for seasonal late rice pro- duction.

关 键 词：颗粒硅钙钾肥 微孔矿物肥 钾矿产品 钾替代 晚稻 

分 类 号：S511.33[农业科学—作物学]