A fertilization method suitable for machine-transplanted japonica rice in northern Jiangsu

Abstract

The invention provides a fertilization method suitable for machine-transplanted japonica rice with wheat stubble in the northern Jiangsu area, and relates to the technical field of rice planting. The steps of the fertilization method include: selecting medium-maturing medium-japonica or late-maturing medium-japonica rice varieties, and cultivating strong seedlings; After all the wheat straw is returned to the field, apply basal fertilizer to the plot to be planted 0-3 days before planting to prepare the site; plant rice seedlings after planting strong seedlings, spray herbicides; apply tiller fertilizer 8-12 days after planting; Apply ear fertilizer 45-50 days after planting medium-japonica rice varieties or 50-55 days after planting medium-japonica rice varieties. The method of the invention is suitable for the fertilization of japonica rice planted by machine-transplanting wheat stubble in the northern Jiangsu area, effectively reduces the application of nitrogen fertilizer, controls the frequency of fertilization, improves the utilization rate of fertilizer and the yield of rice, and reduces the cost of fertilization. It not only overcomes the problems of high fertilization amount, difficulty in grasping the fertilization period, and high frequency of fertilization, but also solves the problems of delayed harvest and wheat not being able to sow properly due to the late colony being prone to corruption and lodging.

Description

technical field

[0001] The invention relates to the technical field of rice planting, in particular to a fertilization method suitable for machine-transplanted japonica rice with wheat stubble in the northern Jiangsu area. Background technique

[0002] The rice planting area in northern Jiangsu is about 20 million mu, of which the area of ​​machine-transplanted japonica rice with wheat stubble is about 14 million mu, accounting for 70% of the total area. The high and stable yield of machine-transplanted japonica rice in northern Jiangsu has an important impact on the safety of food production in the province. Because the rice season temperature and light resources in northern Jiangsu are relatively scarce compared with central and southern Jiangsu, especially the machine-transplanted rice with wheat stubble is more obvious. Therefore, medium-small panicle-type japonica varieties are mostly used for machine-transplanted rice, resulting in generally low yields, with an average ...

Examples

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...

technical field

[0001] The invention relates to the technical field of rice planting, in particular to a fertilization method suitable for machine-transplanted japonica rice with wheat stubble in the northern Jiangsu area. Background technique

[0002] The rice planting area in northern Jiangsu is about 20 million mu, of which the area of ​​machine-transplanted japonica rice with wheat stubble is about 14 million mu, accounting for 70% of the total area. The high and stable yield of machine-transplanted japonica rice in northern Jiangsu has an important impact on the safety of food production in the province. Because the rice season temperature and light resources in northern Jiangsu are relatively scarce compared with central and southern Jiangsu, especially the machine-transplanted rice with wheat stubble is more obvious. Therefore, medium-small panicle-type japonica varieties are mostly used for machine-transplanted rice, resulting in generally low yields, with an average ...

Examples

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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