本文關鍵詞： 長期施肥 有機物料 鉀素利用 鉀素盈虧 土壤速效鉀　出處：《土壤學報》2017年04期 　論文類型：期刊論文

【摘要】：以砂姜黑土長期施肥試驗為平臺,研究砂姜黑土冬小麥—夏大豆輪作系統(tǒng)下作物鉀素吸收量、鉀素回收率、土壤鉀素盈虧量和速效鉀含量的演變特征,探明土壤速效鉀與外源鉀投入、土壤累積鉀盈虧的響應關系,分析不施肥(CK)、常規(guī)化肥(CF)、化肥+麥稈(SCF)、化肥+豬糞(PCF)、化肥+牛糞(CCF)等施肥方式對土壤鉀素利用及盈虧的影響,以期探尋砂姜黑土地區(qū)高產(chǎn)高效的施鉀方式。結(jié)果表明:29 a作物鉀素平均回收率在55.1%~66.1%,高低順序為CCFPCFSCFCF。土壤累積鉀盈虧與土壤速效鉀增量呈顯著線性關系(p0.05),土壤中鉀素每盈余100 kg hm-2,CF、SCF、PCF和CCF處理土壤速效鉀含量分別增加1.4、1.8、2.3和15.8 mg kg-1;土壤鉀素投入量與速效鉀含量呈顯著線性關系(p0.05),CF處理每投入鉀100 kg hm-2,土壤速效鉀含量增加0.4 mg kg-1,而SCF、PCF和CCF處理每投入鉀100 kg hm-2,土壤速效鉀含量分別增加0.5、0.6和4.3 mg kg-1,這說明適當增施有機肥可提升土壤鉀素的供應能力。綜上所述,投入有機物料是影響土壤鉀素利用的重要調(diào)控措施,長期增施有機肥可提高作物鉀素回收率以及土壤中盈余的鉀素向速效鉀的轉(zhuǎn)化能力,本試驗條件下以增施牛糞效果最好,豬糞和秸稈次之。因此,砂姜黑土小麥—大豆輪作系統(tǒng)下秸稈養(yǎng)畜過腹還田是實現(xiàn)作物高產(chǎn)高效的一種推薦施鉀方式。
[Abstract]:Based on long-term fertilization experiment of shajiang black soil, the evolution characteristics of crop potassium uptake, potassium recovery, soil potassium profit and loss and available potassium content under winter wheat summer soybean rotation system in shajiang black soil were studied. The relationship between soil available potassium and exogenous potassium input and the profit and loss of soil accumulated potassium were investigated. The results showed that CK, CFF, SCF and PCF were not applied to CK, CFC, SCF and PCF). Effects of fertilizer, cow manure and CCF on potassium utilization, profit and loss of soil. The results showed that the average recovery rate of potassium was 55.1%. The order was CCFPCFSCF CFC.The relationship between the profit and loss of soil potassium accumulation and the increment of soil available potassium was significantly linear (p 0.05), and the surplus of potassium in soil was 100 kg 路hm ~ (-2) 路m ~ (-2) 路cm ~ (-1) 路L ~ (-1). The contents of available potassium in soil treated with SCF / PCF and CCF increased by 1.4 mg / kg ~ (-1) and 15.8 mg / kg ~ (-1), respectively. There was a significant linear relationship between soil potassium input and available potassium content. The soil available potassium content increased by 0.4 mg kg-1 per 100 kg 路h ~ (-2) of K in CF treatment. However, the content of available potassium in soil increased by 0.50.6,4.3 mg kg-1 per 100 kg hm-2 of potassium in SCF- PCF and CCF treatments, respectively. This indicated that proper application of organic fertilizer could improve the supply capacity of soil potassium. In conclusion, the input of organic materials is an important control measure affecting the utilization of soil potassium. Long-term application of organic fertilizer can improve the yield of potassium in crops and the transformation ability of surplus potassium into available potassium in soil. In this experiment, the effect of adding cow manure is the best, pig manure and straw are the second. It is a recommended potassium application method to realize high yield and high efficiency of crop in shajiang black soil wheat-soybean rotation system.
【作者單位】： 安徽省農(nóng)業(yè)科學院土壤肥料研究所;安徽省農(nóng)業(yè)科學院機關黨委;
【基金】：國家自然科學基金項目(41401331) 安徽省農(nóng)業(yè)科學院學科建設項目(15A1013) 安徽省養(yǎng)分循環(huán)重點實驗室項目(1606c08231)資助~~
【分類號】：S158
【正文快照】： 鉀是土壤肥力的重要物質(zhì)基礎,是作物生長所必需的營養(yǎng)元素之一,其對保障作物的高產(chǎn)穩(wěn)產(chǎn)有重要作用[1-4]。但是,耕地缺鉀依然是制約農(nóng)業(yè)可持續(xù)生產(chǎn)的重要因素[5-6]。近幾十年來,由于作物產(chǎn)量的提高及土壤鉀素產(chǎn)出與投入不平衡的加劇,農(nóng)田土壤缺鉀面積有不斷擴大的趨勢。因此,加

【參考文獻】

相關期刊論文 前10條

1 胡敏;任濤;廖世鵬;李繼福;李小坤;叢日環(huán);魯劍巍;;不同含鉀物料對土壤鉀素含量動態(tài)變化影響[J];土壤;2016年01期

2 王道中;花可可;郭志彬;;長期施肥對砂姜黑土作物產(chǎn)量及土壤物理性質(zhì)的影響[J];中國農(nóng)業(yè)科學;2015年23期

3 岳龍凱;蔡澤江;徐明崗;王伯仁;李冬初;黃晶;張會民;;長期施肥紅壤鉀有效性研究[J];植物營養(yǎng)與肥料學報;2015年06期

4 王西和;呂金嶺;劉驊;;灰漠土小麥-玉米-棉花輪作體系鉀平衡與鉀肥利用率[J];土壤學報;2016年01期

5 魯艷紅;廖育林;周興;聶軍;謝堅;楊曾平;;長期不同施肥對紅壤性水稻土產(chǎn)量及基礎地力的影響[J];土壤學報;2015年03期

6 何冰;薛剛;張小全;許曉敬;姚健;楊鐵釗;;有機酸對土壤鉀素活化過程的化學分析[J];土壤;2015年01期

7 張水清;楊莉;黃紹敏;婁翼來;聶勝委;郭斗斗;三\鏨饕煥，

本文編號：1463484