A fertilization method suitable for machine-transplanted japonica rice in northern Jiangsu
A fertilization method and the technology of the stubble machine, applied in the direction of fertilization method, fertilization device, application, etc., can solve the problems of complex fertilization methods and high cost, and achieve the effects of meeting the characteristics of rice fertilizer requirements, simple operation, and improving fertilizer utilization rate
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Embodiment 1
[0067] (1) Select Lianjing 11, a medium-maturing medium-japonica rice variety, with a germination rate of 95% and an ear number of 200,000 to 230,000 / 667m 2 , the number of grains per panicle is 120-130, the seed setting rate is about 93%, and the thousand-grain weight is 26g;
[0068] (2) Cultivate standardized strong seedlings, the seedling age of cultivating is 18d, the leaf age is 3.5, the number of white roots is 11.3, the dry weight of 100 plants is 5.4g, and the seedling leaf color is emerald green without disease and insect spots;
[0069] (3) Return the whole amount of wheat straw to the field, the length of the straw is about 7cm, spread evenly in the field; apply compound fertilizer (N-P-K, 15%-15%-15%) 20kg / 667m 2 days before planting 2 Add urea (N, 46%) 7.5kg / 667m 2 ; The field preparation generally meets the requirements of "flat, paste, and clean", that is, the height difference of the field is about 2.6cm, the mud is evenly mixed, and the straw is not piled up...
Embodiment 2
[0074] (1) The late-maturing medium-japonica rice variety Nanjing 9108 was selected, the germination rate of the variety was 96%, and the number of ears was 22-240,000 / 667m 2 , the number of grains per panicle is 125-140, the seed setting rate is about 91%, and the thousand-grain weight is about 27g;
[0075] (2) Cultivate standardized strong seedlings. The seedling age of the cultivated seedlings is 20 days, the leaf age is 3.8, the number of white roots is 12.5, the dry weight of 100 plants is 5.8g, and the leaves of the seedlings are emerald green without disease and insect spots;
[0076] (3) Return the whole amount of wheat straw to the field, the length of the straw is about 6cm, spread evenly in the field; apply compound fertilizer (N-P-K, 15%-15%-15%) 25kg / 667m 3 days before planting 2 Add urea (N, 46%) 5.0kg / 667m 2 ; The field preparation generally meets the requirements of flatness, paste and cleanness, that is, the height difference of the field is about 2.0cm, th...
Embodiment 3
[0081] (1) Select Wuyunjing 24, a late-maturing mid-japonica rice variety, with a germination rate of 93% and an ear number of 230,000 to 250,000 / 667m 2 , the number of grains per panicle is 126-130, the seed setting rate is about 90%, and the thousand-grain weight is about 26g;
[0082] (2) Cultivate standardized strong seedlings. The seedling age of the cultivated seedlings is 17 days, the leaf age is 3.2, the number of white roots is 12.3, the dry weight of 100 plants is 5.1g, and the leaf color of the seedlings is emerald green without disease and insect spots;
[0083] (3) Return the whole amount of wheat straw to the field, the length of the straw is about 5cm, spread evenly in the field; apply compound fertilizer (N-P-K, 15%-15%-15%) 15kg / 667m 1 day before planting 2 Add urea (N, 46%) 10.0kg / 667m 2 ; The field preparation generally meets the requirements of "flat, paste, and clean", that is, the height difference of the field is about 2.4cm, the mud is evenly mixed, and...
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