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2022年宿州市夏季主要農作物科學施肥指導意見
2022-05-12
08:58:11
來源：宿州市農業農村局 閱讀量：16599
評論
【農機網 地方農機】為做好夏季主要農作物科學施肥工作，特制定本施肥意見。
一、夏玉米
(一)施肥原則及指導意見
1.以種肥同播為主要施肥方式，大力推進緩控釋高氮配方肥，將肥料施入種子以下8厘米部位。
2.全市高鉀地區減少鉀素用量，普遍可減少3-4公斤，土壤速效鉀含量在150mg/kg以上的田塊本季可以全減鉀肥。鉀素不足的田塊相應施入所需鉀肥。高磷田塊減少磷素施用，土壤速效磷含量在30mg/kg以上的田塊本季可不施磷肥。
3.玉米喜鋅，本市大部分土壤缺鋅，凡缺鋅田塊補施鋅肥。
4.提倡秸稈還田，推廣麥草(在玉米行間)覆蓋還田，可提高土壤有機質含量，培肥地力。
5、有機肥易施入的田塊，提倡施入有機肥，或有機無機復混肥，利于提高糧食生產能力。
6、請各地施肥時注意查詢各縣測土配方施肥應用管理系統，或微信APP或聯系當地土肥部門，力爭施用配方肥或有效指導農民按方施肥，有效提高測土配方施肥技術覆蓋率90%以上。
(二)施肥建議
1.產量水平700公斤/畝以上：氮肥(N)16-17公斤/畝，磷肥(P2O5)6-7公斤/畝，鉀肥(K2O)5-6公斤/畝。
2、產量水平600-700公斤/畝以上：氮肥(N)15-16公斤/畝，磷肥(P2O5)5-6公斤/畝，鉀肥(K2O)4-5公斤/畝。
3.產量水平500-600公斤/畝：氮肥(N)14-15公斤/畝，磷肥(P2O5)4-5公斤/畝，鉀肥(K2O)3-4公斤/畝。
4.沒有選購到緩釋配方肥的，氮肥不宜一次性基施。基肥用上述產量所需的全部磷素和鉀素以及50%的氮素作基肥。余下的氮肥于大喇叭口期追肥。
推廣鋅肥在大喇叭口期用無人機葉面噴施，畝用2兩農用硫酸鋅加2兩磷酸二氫鉀溶解50公斤水配成溶液，于晴天下午4點后噴施，對促進灌漿，增加粒重具有很好的效果。
二、大豆
(一)施肥原則指導意見
1.以種肥同播為主要施肥方式，大力推進新型優質大豆根瘤菌肥應用(不同品種肥料使用方法參加使用說明)，或在缺鉬田塊補施鉬肥，提高結瘤效率。注重大豆配方肥施用，尤其做好大豆玉米復合帶狀種植區配方肥施肥指導。
2.土壤速效鉀含量在150mg/kg以上的田塊本季可以不施鉀肥。鉀素不足的田塊相應施入所需鉀肥。土壤速效磷含量在30mg/kg以上的田塊本季可不施磷肥。
3.提倡秸稈還田，推廣麥草(在大豆行間)覆蓋還田，可提高土壤有機質含量，有效提升土壤保墑能力，培肥地力。
4、有機肥易施入的田塊，提倡施入有機肥，或有機無機復混肥，有效提高耕地質量，同時提高
農產品品質。
5、在埇靈泗南部偏酸性土壤上，選用以鈣鎂磷肥為磷原料的配方肥。
(二)施肥建議
高產田塊施肥量高些，低產田塊施肥量少些。花莢期植株生長健壯繁茂，不需追肥，防徒長倒伏。
1、目標產量為200公斤/畝以上：氮肥(N)5-6公斤/畝，磷肥(P2O5)3-4公斤/畝，鉀肥(K2O)3-4公斤/畝。
2、目標產量為175-200公斤/畝：氮肥(N)4.5-5公斤/畝，磷肥(P2O5)2.5-3公斤/畝，鉀肥(K2O)2.5-3公斤/畝。
3、目標產量150-175公斤/畝：氮肥(N)4-4.5公斤/畝，磷肥(P2O5)2-2.5公斤/畝，鉀肥(K2O)2-2.5公斤/畝。
4、沒有施用生物根瘤菌肥的田塊，推廣花期葉面噴施0.02%鉬酸銨，促進根瘤菌形成，提高固氮能力，促進蛋白質的合成。
附：各縣新研發的測土配方施肥信息查詢系統
蕭縣農技公共服務平臺，微信公眾號：xxnjggfwpt168
泗縣農業農村局， 微信公眾號：sxnyjstg
靈璧縣農業農村局， 微信公眾號：gh_71032fcfe753
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