藥肥混用要(yao)點

根據(ju)水(shui)溶液(ye)的酸堿度(du)，農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)可分為中(zhong)(zhong)性(xing)(xing)、酸性(xing)(xing)、堿性(xing)(xing)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)。堿性(xing)(xing)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)包括石硫(liu)合(he)劑(ji)、波爾(er)多液(ye)、松脂合(he)劑(ji)、石灰等(deng)；酸性(xing)(xing)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)包括硫(liu)酸銅、硫(liu)酸鋇、硫(liu)酸鋅、馬拉(la)硫(liu)磷等(deng)；中(zhong)(zhong)性(xing)(xing)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)較多，大(da)多數化學合(he)成農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)、植物(wu)性(xing)(xing)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)、微生物(wu)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)等(deng)都是(shi)中(zhong)(zhong)性(xing)(xing)農(nong)(nong)(nong)(nong)(nong)藥(yao)(yao)。

一(yi)般(ban)來說，堿(jian)(jian)性(xing)(xing)(xing)農(nong)(nong)藥(yao)應(ying)單獨使用，但有(you)時也(ye)可(ke)與(yu)其他堿(jian)(jian)性(xing)(xing)(xing)物質(zhi)混(hun)(hun)(hun)(hun)用，如：敵百蟲與(yu)肥皂混(hun)(hun)(hun)(hun)用，藥(yao)效可(ke)以(yi)提(ti)高(gao)。酸(suan)(suan)(suan)性(xing)(xing)(xing)農(nong)(nong)藥(yao)之間(jian)(jian)，中(zhong)(zhong)性(xing)(xing)(xing)農(nong)(nong)藥(yao)之間(jian)(jian)，中(zhong)(zhong)性(xing)(xing)(xing)農(nong)(nong)藥(yao)與(yu)酸(suan)(suan)(suan)性(xing)(xing)(xing)農(nong)(nong)藥(yao)之間(jian)(jian)多(duo)可(ke)混(hun)(hun)(hun)(hun)用，但也(ye)不(bu)是都(dou)可(ke)以(yi)混(hun)(hun)(hun)(hun)用。混(hun)(hun)(hun)(hun)用時應(ying)以(yi)不(bu)提(ti)高(gao)農(nong)(nong)藥(yao)對人畜毒性(xing)(xing)(xing)為原則。部(bu)分農(nong)(nong)藥(yao)如甲基托布津(jin)（甲基硫菌靈）不(bu)能與(yu)銅制(zhi)劑，如硫酸(suan)(suan)(suan)銅、波爾多(duo)液、可(ke)殺得(de)(de)、科(ke)博甲霜銅、綠得(de)(de)保、綠乳銅、病(bing)毒A、病(bing)毒克星、醋酸(suan)(suan)(suan)銅及其制(zhi)劑等混(hun)(hun)(hun)(hun)用。

化(hua)肥(fei)按其水(shui)溶液的酸(suan)(suan)(suan)堿度，可分為堿性、酸(suan)(suan)(suan)性、中(zhong)性三(san)類(lei)。堿性肥(fei)料包括(kuo)氨水(shui)、碳銨、鈣鎂磷(lin)(lin)等。酸(suan)(suan)(suan)性肥(fei)料包括(kuo)硫酸(suan)(suan)(suan)銨、氯化(hua)銨、硝(xiao)酸(suan)(suan)(suan)銨、普鈣、磷(lin)(lin)酸(suan)(suan)(suan)二氫鉀等；中(zhong)性肥(fei)料主(zhu)要有尿素、硫酸(suan)(suan)(suan)鉀、氯化(hua)鉀、硝(xiao)酸(suan)(suan)(suan)鉀等。

堿性肥料應(ying)單獨使用(yong)，但有時(shi)也可(ke)(ke)以(yi)與某(mou)些化(hua)肥隨(sui)混(hun)(hun)隨(sui)用(yong)，如碳(tan)銨與硫酸銨混(hun)(hun)合施用(yong)，但不能久放；酸性農藥、化(hua)肥均可(ke)(ke)與中性肥料混(hun)(hun)用(yong)；中性農藥、化(hua)肥也可(ke)(ke)以(yi)混(hun)(hun)用(yong)。

含氯(lv)化肥(fei)不能用于(yu)忌氯(lv)作物(wu)上，如煙草、茶葉(xie)等，否則會對作物(wu)造(zao)成(cheng)傷害或影響產品(pin)品(pin)質。氯(lv)化鉀(jia)、氯(lv)化銨及(ji)其復合(he)混劑(ji)就是含氯(lv)化肥(fei)，購(gou)用時應(ying)特別注意(yi)。鑒于(yu)農(nong)藥化肥(fei)品(pin)種(zhong)極多，這里不能一一列舉(ju)，建(jian)議(yi)農(nong)民朋友(you)混用時應(ying)向當地農(nong)業技術部門咨(zi)詢(xun)，以免出現失誤(wu)。

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