Rice Straw Returning to No-tillage and Planting Wheat Technique
Rice straw stalk returning to no-tillage technology refers to the simple method of planting wheat after the rice is harvested and the rice stalk is evenly laid in the field without plowing and only chemical weeding is performed. The technology was successfully tested in May 2000 by the Second Institute of Agricultural Sciences in Chengdu. Rice stalks returning to no-tillage planting wheat technology fully combines the advantages of straw returning, no-tillage, and broadcast sowing and scientific assembly to form new supporting technologies. At present, no official reports have been reported at home and abroad. Experimental studies have shown that this comprehensive supporting technology can not only increase income, save money, and increase efficiency, but also has significant ecological and economic benefits. In 1999, the experiment yielded 355.31 kg of wheat per mu, which yielded an increase of 11.37 kg compared with the traditional cultivation method of the same field in the same field. The yield increased by 3.3%, and the saving investment of the mu was about 80 yuan. The success of this technology can not only increase soil organic nutrients, reduce chemical fertilizer pollution, protect soil aggregate structure, facilitate the flow of water, fertilizer, and gas in the soil, reduce plant aboveground and underground diseases, but also greatly accelerate the planting schedule and reduce labor intensity. At the same time, environmental pollution caused by incineration of straw is avoided, a new outlet has been found for the reuse of straw, and it is suitable for the needs of modern technology. It is a cost-saving and advanced technology. Now we will introduce the technical points of the sowing of wheat straw in the field of no-tillage rice straw.
(a) After weeding rice for soil preparation and weeding, all the straw shall be evenly spread throughout the field, allowing it to be exposed to the sun and rain. 7m before sowing, carry out 5m open, make a good ditch, groove width 30cm, ditch depth 30cm, so that the field surface formation, in order to facilitate the drainage and irrigation at the end of the time, while mu with gram trace 0.25kg, chemical weeding.
(2) Fertilization Before 1-2 d sowing, use the method of base fertilizer and clearing, using 12 kg of pure nitrogen, 10 kg of superphosphate, and 10 kg of potassium oxide for mu, which requires uniform application, and should not be applied at high temperature.
(3) The sowing time for fine sowing is 2-3 days earlier than the local average. Two cropping fields in Chengdu Plain are sown on October 30th, with 10-20kg of selected fine varieties, soaked with plant nutrient solution such as “vigor†500 times, and then dried and dried. . In areas with good conditions, horse water may be irrigated 1-2 times after sowing to moisturize the seedlings. At the same time, pay attention to rodent damage.
(D) After the sowing of field management, the emergence of good or bad depends mainly on the humidity in the field. Therefore, we must strengthen water management and pay attention to moisture. After the Miao Qi to the second leaf and one heart according to the situation of the local grassland damage, select the appropriate herbicide for a weeding period of weeding, such as the use of 75% of mu to make it Long 5g spray 50kg of water. At the same time mu 75% paclobutrazol 150g water spray 75kg, in order to seedlings dwarfing more. Before the jointing, Mushi Zhejian Zhuangsu 25g will promote the thickening of stems and enhance the lodging resistance. Potassium dihydrogen phosphate 0.5 kg is sprayed during the booting stage and can also be combined with other nutrients to increase the seed setting rate. Timely mu with 50% rust and 100g prevent rust, heading and flowering period mu 75% thiophanate-methyl 100g control scab.
(5) Timely harvest When the wheat reaches 90% maturity, grab the sunny harvest in time, lighten the sun and store it slowly to ensure the quality.
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