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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 來源：全國農(nóng)技推廣中心 閱讀量：20159 評論

導(dǎo)讀：有機肥與化肥配合施用，合理確定有機肥種類與用量，調(diào)整氮磷鉀化肥用量，非石灰性土壤及酸性土壤需補充鈣、鎂、硼等中微量元素。

　　【農(nóng)機網(wǎng) 科技創(chuàng)新】
 
　　施肥原則
 
　　針對生產(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、有機肥與化肥配合施用，合理確定有機肥種類與用量，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行秸稈還田或施用高碳氮比的有機肥，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、土壤酸化嚴重時應(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”的方法確定有機肥用量，提倡施用高碳磷比有機物料。依據(jù)土壤肥力條件，適當調(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、基肥重視有機無機配施，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，促根同時增強作物抗逆性。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時易出現(xiàn)鈣、鎂、硼缺乏，可基施石灰(鈣肥)50—75公斤/畝、無水硫酸鎂(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。
 
　　來源：農(nóng)業(yè)農(nóng)村部種植業(yè)管理司、全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心、農(nóng)業(yè)農(nóng)村部科學(xué)施肥專家指導(dǎo)組

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