蓮藕田怎樣科學施肥

藕(ou)田(tian)基(ji)地的(de)施肥量(liang)應根(gen)據土(tu)壤肥瘦而定，一般(ban)選(xuan)擇土(tu)質(zhi)疏松(song)，肥沃，有機質(zhi)豐(feng)富，灌(guan)排(pai)方(fang)便(bian)的(de)田(tian)塊(kuai)，結合(he)整地每畝(mu)施入畜糞肥2500～3000公(gong)(gong)(gong)斤(jin)(jin)，二銨25公(gong)(gong)(gong)斤(jin)(jin)；硫酸(suan)鉀10～15公(gong)(gong)(gong)斤(jin)(jin)，生石(shi)灰(hui)50～100公(gong)(gong)(gong)斤(jin)(jin)，過(guo)磷酸(suan)鈣50公(gong)(gong)(gong)斤(jin)(jin)，餅(bing)肥150公(gong)(gong)(gong)斤(jin)(jin)，耙平即(ji)可(ke)！

蓮藕整(zheng)個生育期追(zhui)肥(fei)(fei)(fei)3次(ci)(ci)。第(di)1次(ci)(ci)在1～2片立(li)(li)葉（大(da)約(yue)(yue)定植(zhi)25天）時(shi)施(shi)用(yong)，結(jie)(jie)合(he)中(zhong)耕除草，每(mei)畝(mu)(mu)追(zhui)尿(niao)(niao)素3～5公(gong)(gong)斤(jin)(jin)或(huo)施(shi)入人(ren)(ren)糞尿(niao)(niao)750～1000公(gong)(gong)斤(jin)(jin)；第(di)二次(ci)(ci)在有5～6片立(li)(li)葉（約(yue)(yue)定植(zhi)后(hou)40天，即將封行時(shi)）施(shi)用(yong)，每(mei)畝(mu)(mu)施(shi)復合(he)肥(fei)(fei)(fei)20～25公(gong)(gong)斤(jin)(jin)，尿(niao)(niao)素5公(gong)(gong)斤(jin)(jin)，或(huo)人(ren)(ren)糞尿(niao)(niao)肥(fei)(fei)(fei)800公(gong)(gong)斤(jin)(jin)左右(you)；第(di)三次(ci)(ci)追(zhui)肥(fei)(fei)(fei)在終止葉出現時(shi)進行，這(zhe)時(shi)結(jie)(jie)藕開始，即為追(zhui)藕肥(fei)(fei)(fei)，每(mei)畝(mu)(mu)施(shi)入糞尿(niao)(niao)肥(fei)(fei)(fei)1000～1500公(gong)(gong)斤(jin)(jin)，餅肥(fei)(fei)(fei)30～50公(gong)(gong)斤(jin)(jin)，第(di)三次(ci)(ci)追(zhui)肥(fei)(fei)(fei)主(zhu)要(yao)以補充鉀(jia)肥(fei)(fei)(fei)為主(zhu)，每(mei)畝(mu)(mu)施(shi)硫酸(suan)鉀(jia)肥(fei)(fei)(fei)10公(gong)(gong)斤(jin)(jin)左右(you)，或(huo)噴施(shi)0.2%磷酸(suan)二氫鉀(jia)葉面肥(fei)(fei)(fei)，每(mei)隔7天噴施(shi)1次(ci)(ci)。

施(shi)肥應選擇晴朗(lang)無(wu)風的天氣，避免(mian)在烈日的中午進(jin)行，放淺水(shui)位，有利(li)于肥料滲入(ru)土中，然后再灌水(shui)到(dao)原來的深度，在深水(shui)藕(ou)田中，肥料易流失，所以不能直接施(shi)用(yong)液化(hua)肥料，應施(shi)用(yong)固體肥料，即重(zhong)施(shi)青草(cao)綠肥，并(bing)埋入(ru)泥塘(tang)中，追肥用(yong)化(hua)肥時，首先將化(hua)肥與(yu)河泥充(chong)分混合，做成泥團，再施(shi)入(ru)藕(ou)田。