Special fertilizer for green Chinese onion and fertilizing method
A technology of special fertilizer and scallions, which is applied in the field of agricultural cultivation, can solve the problems of unbalanced application of chemical fertilizers, nutrient supply and demand, and inability to fully satisfy the nutrition of scallions, and achieve a balance between convenient implementation, reduced fertilizer input, and promotion of vegetative growth and reproductive growth Effect
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Embodiment 1
[0043] Embodiment 1. a kind of green onion special fertilizer comprises the following components: organic fertilizer 10000kg / hm 2 , Urea 1000kg / hm 2 (N467kg / hm 2 ), diammonium phosphate 300kg / hm 2 (P 2 o 5 168kg / hm 2 ), potassium nitrate 1000kg / hm 2 (K 2 O467kg / hm 2 ), calcium fertilizer 220kg / hm 2 , magnesium fertilizer 40kg / hm 2 , Sulfur fertilizer 40kg / hm 2 , silicon fertilizer 180kg / hm 2 .
[0044] Fertilization method:
[0045] Step 1: Apply enough basal fertilizer at the seedling stage to cultivate strong seedlings. After the seedling bed is selected, apply enough basal fertilizer combined with site preparation, and apply 3000kg / hm of organic fertilizer at the seedling stage 2 , urea 250kg / hm 2 (N116.75kg / hm 2 ), diammonium phosphate 60kg / hm 2 (P 2 o 5 33.6kg / hm 2 ), potassium nitrate 250kg / hm 2 (K 2 O116.75kg / hm 2 );
[0046] Step 2: After the seedling stage is over, select strong seedlings for planting. Before planting, apply sufficient base fert...
Embodiment 2
[0048] Embodiment 2. a kind of green onion special fertilizer comprises the following components: organic fertilizer 12000kg / hm 2 , urea 1200kg / hm 2 (N560.4kg / hm 2 ), diammonium phosphate 400kg / hm 2 (P 2 o 5 224kg / hm 2 ), potassium nitrate 1200kg / hm 2 (K 2 O560.4kg / hm 2 ), calcium fertilizer 240kg / hm 2 , Magnesium fertilizer 60kg / hm 2 , Sulfur fertilizer 60kg / hm 2 , silicon fertilizer 200kg / hm 2 .
[0049] Fertilization method:
[0050] Step 1: Apply sufficient basal fertilizer at the seedling stage to cultivate strong seedlings. After the seedling bed is selected, apply sufficient basal fertilizer combined with site preparation, and apply 4000kg / hm of organic fertilizer at the seedling stage 2 , Urea 350kg / hm 2 (N163.45kg / hm 2 ), diammonium phosphate 80kg / hm 2 (P 2 o 5 44.8kg / hm 2 ), potassium nitrate 350kg / hm 2 (K 2 O163.45kg / hm 2 );
[0051] Step 2: After the seedling stage is over, select strong seedlings for planting. Before planting, apply sufficie...
Embodiment 3
[0053] Embodiment 3. a kind of green onion special fertilizer comprises the following components: organic fertilizer 10500kg / hm 2 , Urea 1050kg / hm 2 (N490.35kg / hm 2 ), diammonium phosphate 345kg / hm 2 (P 2 o 5 193.2kg / hm 2 ), potassium nitrate 1050kg / hm 2 (K 2 O490.35kg / hm 2 ), calcium fertilizer 230kg / hm 2 , magnesium fertilizer 50kg / hm 2 , Sulfur fertilizer 50kg / hm 2 , silicon fertilizer 190kg / hm 2 .
[0054] Fertilization method:
[0055] Step 1: Apply enough basal fertilizer at the seedling stage to cultivate strong seedlings. After the seedling bed is selected, apply enough basal fertilizer combined with site preparation, and apply 3000kg / hm of organic fertilizer at the seedling stage 2 , Urea 300kg / hm 2 (N140kg / hm 2 ), diammonium phosphate 75kg / hm 2 (P 2 o 5 42kg / hm 2 ), potassium nitrate 300kg / hm 2 (K 2 O140kg / hm 2 );
[0056] Step 2: After the seedling stage is over, select strong seedlings for planting. Before planting, apply sufficient base fert...
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