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地點(diǎn)： 重慶市
開展時(shí)間： 2024-10-23
舉辦單位： 重慶市機(jī)械工程學(xué)會(huì)、重慶市電子學(xué)會(huì)、重慶市自動(dòng)化儀器儀表學(xué)會(huì)
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地點(diǎn)： 長(zhǎng)沙市
開展時(shí)間： 2024-10-26
舉辦單位： 中國(guó)農(nóng)業(yè)機(jī)械流通協(xié)會(huì)、中國(guó)農(nóng)業(yè)機(jī)械化協(xié)會(huì)、中國(guó)農(nóng)業(yè)機(jī)械工業(yè)協(xié)會(huì)
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地點(diǎn)： 長(zhǎng)春市
開展時(shí)間： 2024-10-28
舉辦單位： 中國(guó)長(zhǎng)城綠化促進(jìn)會(huì)、智奧會(huì)展(哈爾濱)有限公司
2024年秋冬季設(shè)施番茄科學(xué)施肥指導(dǎo)意見
2024-10-14
09:25:31
來(lái)源：全國(guó)農(nóng)技推廣中心 閱讀量：13228
評(píng)論
導(dǎo)讀：有機(jī)肥與化肥配合施用，合理確定有機(jī)肥種類與用量，調(diào)整氮磷鉀化肥用量，非石灰性土壤及酸性土壤需補(bǔ)充鈣、鎂、硼等中微量元素。
【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新】
施肥原則
針對(duì)生產(chǎn)中存在化肥用量偏高，養(yǎng)分投入比例不合理，土壤養(yǎng)分積累明顯，過量灌溉、土壤酸化現(xiàn)象普遍，土壤質(zhì)量退化及鈣、鎂、硼等中微量元素供應(yīng)障礙等問題，提出以下施肥原則：
1、有機(jī)肥與化肥配合施用，合理確定有機(jī)肥種類與用量，調(diào)整氮磷鉀化肥用量，非石灰性土壤及酸性土壤需補(bǔ)充鈣、鎂、硼等中微量元素。
2、根據(jù)作物產(chǎn)量、茬口及土壤肥力合理分配化肥，大部分磷肥基施，氮鉀肥追施。生長(zhǎng)前期不宜頻繁追肥，重視花后和中后期追肥。推薦施用增效肥料，提高肥料利用效率，降低養(yǎng)分損失。
3、推廣滴灌施肥技術(shù)，遵循少量多次的灌溉施肥原則，做到控水控肥、提質(zhì)增產(chǎn)、提高水肥利用效率。
4、土壤退化的老棚需進(jìn)行秸稈還田或施用高碳氮比的有機(jī)肥，少施禽糞肥，增加輪作次數(shù)，減輕土壤鹽漬化和連作障礙。
5、土壤酸化嚴(yán)重時(shí)應(yīng)適量施用石灰調(diào)理土壤。
6、施肥與高產(chǎn)栽培結(jié)合，選育高產(chǎn)耐密品種，提高育苗質(zhì)量，采用合理種植密度，選擇適宜播期/移栽期。
施肥建議
1、基肥施用充分腐熟的優(yōu)質(zhì)農(nóng)家肥3—4方/畝，或者優(yōu)質(zhì)商品有機(jī)肥300—400公斤/畝。有條件的園區(qū)可采用“以磷定量”的方法確定有機(jī)肥用量，提倡施用高碳磷比有機(jī)物料。依據(jù)土壤肥力條件，適當(dāng)調(diào)整化肥用量。
2、產(chǎn)量水平8000—10000公斤/畝，氮肥(N)20—25公斤/畝，磷肥(P2O5)8—10公斤/畝，鉀肥(K2O)22—28公斤/畝。
3、產(chǎn)量水平6000—8000公斤/畝，氮肥(N)15—20公斤/畝，磷肥(P2O5)6—8公斤/畝，鉀肥(K2O)17—22公斤/畝。
4、產(chǎn)量水平4000—6000公斤/畝，氮肥(N)12—15公斤/畝，磷肥(P2O5)5—7公斤/畝，鉀肥(K2O)14—17公斤/畝。
5、基肥重視有機(jī)無(wú)機(jī)配施，70%以上的磷肥作基肥條(穴)施，其余隨復(fù)合肥追施，20%—30%氮鉀肥基施，70%—80%在花后至果穗膨大期間分4—8次隨水追施，每次追施氮肥(N)不超過3公斤/畝。雨水充沛的區(qū)域，提倡施用含脲酶抑制劑、硝化抑制劑的氮肥。在低溫、寡照等極端環(huán)境下，可施用含氨基酸、黃腐酸、海藻酸等功能性物質(zhì)的肥料，促根同時(shí)增強(qiáng)作物抗逆性。如采用滴灌施肥技術(shù)，在開花坐果期、結(jié)果期和盛果期每間隔7—10天追肥一次，每次施氮(N)量可降至2—3公斤/畝。
6、菜田土壤pH<6時(shí)易出現(xiàn)鈣、鎂、硼缺乏，可基施石灰(鈣肥)50—75公斤/畝、無(wú)水硫酸鎂(鎂肥)4—6公斤/畝。在開花期至盛果期葉面噴施2—3次0.1%硼肥水溶液、2—4次螯合態(tài)鈣肥和硫酸鎂肥。
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