A method of side-deep fertilization for double-cropping rice machine insertion

Abstract

The invention belongs to the field of rice planting, and discloses a method for machine-inserted side deep fertilization of double-cropping rice. The method includes: (1) finishing and controlling the field surface; (2) synchronous fertilization by machine transplanting: adjust the depth of mechanical planting, and apply the special slow-release fertilizer for rice into the vicinity of the root system of the rice seedlings at the same time as the seedlings are transplanted; Fertilizers are applied at a distance of 3 to 4 cm from the seedlings and 3 to 4 cm from the field surface, and the amount of fertilizer is 30 to 50 kg / mu; (3) The special slow and controlled release fertilizers for rice are respectively: the nutrient content of the slow and controlled release fertilizers for early rice N:P 2 o 5 :K 2 O=18-22:9-11:17-19, the ratio of nitrogen fertilizer in the slow and controlled release period of 0, 30, and 60 days is 45-55:30-35:15-20; the nutrient content of slow and controlled release fertilizer for late rice N:P 2 o 5 :K 2 O=20-24:7-10:17-19, the ratio of nitrogen fertilizer in the slow and controlled release period 0, 30, and 60 days is 40-50:30-35:20-25. The method uses mechanized seedling transplanting and synchronous fertilization, and one time of fertilization during rice transplanting meets the nutrient requirements of the rice growth period, reduces the number of times of fertilization, reduces the amount of fertilizer, and improves the utilization rate of nutrients.

Description

technical field [0001] The invention relates to the field of rice planting, in particular to a method for machine-inserted side deep fertilization of double-cropping rice. Background technique [0002] Double cropping rice refers to a rice farming system in which two crops of rice are planted and harvested in the same paddy field a year. It is an important rice production method in southern my country, accounting for about 25% of the country's rice planting area and 35% of the output It is of great significance to ensure the food security of our country. The emergence and development of double-cropping rice is a great progress in rice cultivation technology. It has played a positive role in improving the multiple cropping index and making full use of agricultural resources, and has achieved remarkable results in increasing grain production. Although the national average annual output of early rice and late rice is lower than that of single-cropping rice, the annual yield per...

AI Technical Summary

Problems solved by technology

[0003] The planting cycle of double-cropping rice is long. Early rice generally runs from March to mid-July, and late rice runs from June to November. If the harvest of early rice and the transplanting of late rice are not timely, it is easy to cause cold dew wind in the later stage of late rice, which will affect the fruiting and filling

However, most of the young and middle-aged people in rural areas nowadays go out to work, and those who stay at home are mostly old people and children. The labor force is seriously insufficient and cannot adapt to the rhythm of double-cropping rice planting, which leads to a further decline in the enthusiasm for double-cropping rice planting.

In addition, double-cropping rice has a long planting cycle and rural labor is in short supply. At present, double-cropping rice is generally fertilized 4 to 6 times (early and late rice each 2 to 3 times), which requires a large amount of labor and the amount of fertilizer is unreasonable. If mechanized fertilization is used, There is also a lack of special fertilizer formulas for early rice and late rice suitable for mechanization, and the cost of mechanized fertilization is high, and too many times of fertilization will undoubtedly increase the burden on farmers

At the same time, applying too much chemical fertilizer to farmland is not only a waste of resources, but also causes imbalance of soil nutrients, soil acidification, nutrient loss causes nitrogen and phosphorus pollution in water bodies, and affects the stability of agricultural ecosystems

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