Double cropping rice machine transplanting lateral and deep fertilization method

Abstract

The invention belongs to the field of rice planting, and discloses a double cropping rice machine transplanting lateral and deep fertilization method. The method comprises the following steps of (1) tidying and controlling a field surface; (2) performing mechanical transplanting and synchronous fertilization: adjusting the mechanical transplanting depth, and laterally and deeply applying special slow / controlled-release fertilizer for rice near root systems of rice seedlings while the rice seedlings are transplanted, wherein the transplanting depth is 2 cm, the distances between the applied fertilizer and the seedlings are 3-4 cm, the depth between the applied fertilizer and the field surface is 3-4 cm, and the use amount of the fertilizer is 30-50 kg / mu; and (3) determining the special slow / controlled-release fertilizer for the rice, wherein the special slow / controlled-release fertilizer for the rice is special slow / controlled-release fertilizer for early rice, and in the special slow / controlled-release fertilizer for the early rice, the nutrient content ratio of N to P2O5 to K2O is (18-22) to (9-11) to (17-19), and the ratio of nitrogen fertilizers in the slow / controlled-release periods of 0, 30 and 60 days is (45-55): (30-35): (15-20); and the special slow / controlled-release fertilizer for the rice is special slow / controlled-release fertilizer for late rice, and in the special slow / controlled-release fertilizer for the late rice, the nutrient content ratio of N to P2O5 to K2O is (20-24) to (7-10) to (17-19), and the ratio of nitrogen fertilizers in the slow / controlled-release periods of 0, 30 and 60 days is (40-50): (30-35): (20-25). According to the method, through mechanical rice transplanting and synchronous fertilization, the nutrient requirement of the rice in the growth period can be met through one-time fertilization during rice transplanting, the fertilization frequency is reduced, the fertilizer consumption is reduced, and the nutrient utilization rate isincreased.

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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