Application of weeding and fertilizing rice in paddy field

The effect of weeding and fertility after rice bran is applied to paddy fields provides a scientific basis for future bio-weeding, ecological environment protection, and organic and green rice production. I. Materials and Methods 1. Selection of test materials In Baoqing County Institute of Science and Technology, seven years of drought and water change, the soil was white pulp meadow soil, and irrigation and drainage conditions were good. The rice bran and its varieties were provided by the Rice Research Institute of the Academy of Agricultural Sciences. The tested variety was Japonica No. 10. 2. The methods and treatments were compared with each other in the large area without duplicates. The test and control area was 7.5 mu. The test area is the treatment area: 200 g/m2 of fine rice is spread after the rice turns green, and the control area is conventional fertilization and weeding. The basic conditions before transplanting were the same, namely, the nursery on April 19, the tillage on May 20, the appropriation of No. 2 ecological compound fertilizer by 16.5kg per mu, and mechanical transplanting on May 27, the specification was 3014cm, and each plug inserted 3 to 5 Strains. Treatment area: On June 6, 200 g/m2 of processed rice output was used for one-time application. The principle of killing grass is that when the rice bran is applied to the surface of the paddy field, the tannins are most likely to be decomposed by the microorganisms, and a large amount of co2 and a large amount of o2 are consumed in a week, so that the field enters a reduced state, that is, a layer of brown oil film is formed on the surface, o2 The decrease can hinder the germination of grass seed, and the increase of co2 can hinder the growth and development of weeds and achieve the weeding effect. Because of the organic matter produced by the decomposition of tannins, which has the effect of land fertility and yield increase, the treatment area is treated with chemical fertilizers and pesticides at the end of the period, but the green rice food is produced by biological methods. Control area: Use conventional fertilization and weeding methods. In the returning green stage and jointing stage of rice, 3.3 kg/mu urea was applied. Chemical weeding grass nemesis 10g/mu and cockroach cleansing 20g/mu mixed spray one time, later manual weeding. 2. Result analysis Rice bran applied to paddy field has good weeding, fertilizing and yield increasing effects, and the herbicidal effect can reach above 95%. The application method is simple and has a good promoting effect on rice growth and development. The performance was spike length, multiple grains, empty grains, low grain weight, high grain weight, live stalk maturation, etc., but 0.8 cm higher and lower than the control, and 0.4 fewer tillers. The hectare yield of the treatment area is 8368.5kg, and the yield of the control area is 7804.5kg, an increase of 7.2%. III. Economic Benefits The application of this technical measure has the functions of herbicide, fertilization and production increase. From the test results, the rate of increase in production is not very significant. Calculating the same rice price, the total investment is 13.4 yuan. At present, the price of green rice market is higher than ordinary rice by 0.15 yuan/kg or more. If calculated at this price, weeds and weeds will increase by 64.6 yuan more than the control. Therefore, from the perspective of protecting the ecological environment, producing pollution-free green rice food, and protecting human health, there is still great potential for development in terms of production.

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