The rice and wheat cultivation project group of the Jiangsu Academy of Agricultural Sciences carried out years of research on the cultivation techniques of full-planting wheat straw. According to Yang Sijun, a researcher in charge of the project team, in recent years, the technology has been demonstrated in many places in our province. The demonstration site is in the south of Yixing, and the northernmost site in Tongshan has achieved an increase in production. In recent years, the rice harvest period in Huaibei area has been postponed. The necessity of interplanting wheat in paddy fields is stronger, and the symbiosis period of rice and wheat is suitable for 7 to 10 days and the longest period is no more than 15 days. Planting rice in wheat in southern Jiangsu, the symbiotic period is not long, 0 to 5 days can be. The key to this technology is to harvest rice using semi-feeding combine harvesters such as Yanmar and Kubota. The rice straw is chopped and evenly spread over the field. Rice stubble height is less than 10 cm. Rice straw can only degrade about 60% during the entire wheat growing season. Undegraded straw can be turned into the field before planting rice. After the total amount of straw was covered, it had little effect on fertilization and had a greater impact on weeding. Broad-leaved weeds in rice fields are significantly reduced, but weedy grasses have large pressure control, because weed grasses are older when they pass through the straw, and it is difficult to control them before winter. In the early spring medication control.
The roots of the rice cultivars were shallowly distributed, and varieties with strong lodging resistance, strong antifreeze ability, and compact plant type were selected. The sowing date of rice straw should be determined according to the appropriate sowing date of wheat itself and the rice harvest time, preferably within the appropriate time for wheat sowing, and when the rice is harvested, the wheat is in the seedling stage (1 leaf and 1 heart period). It is conducive to the formation of strong seedlings. Generally, the seeds are sown about 7 days before the rice is harvested, so as to avoid premature planting of rice straw causing damage to the seedlings. Do not blindly broadcast in due time. The symbiotic period is too long and it is easy to cause weak seedlings. The appropriate sowing time is 8 to 10 kilograms per acre, and the sowing of field plots will increase the seeding rate. Spraying seeds through a mist sprayer ensures uniform seeding. Before harvesting rice, about 15 kg of formula fertilizer per acre, about 10 kg of urea, to achieve early-onset strong seedlings. 3 leaf 1 combined with anterior three groove and mechanical excavation of field furrows, appropriately increasing the density of open trenches, uniform mud cover 1 to 2 cm thick. Early application of strong fertilizer, to achieve base (sets) fertilizer deficiency Miaofeibu, overwinter and return to the green period of lack of seedlings or power off the yellow field should be appropriate balance (relay) fertilizer to catch the Yellow Pond, promote balance, weight Stretching season booting fertilizer, generally about 15 kilograms of urea with urea, to pour 3 leaves and flag leaf phase twice better.
The roots of the rice cultivars were shallowly distributed, and varieties with strong lodging resistance, strong antifreeze ability, and compact plant type were selected. The sowing date of rice straw should be determined according to the appropriate sowing date of wheat itself and the rice harvest time, preferably within the appropriate time for wheat sowing, and when the rice is harvested, the wheat is in the seedling stage (1 leaf and 1 heart period). It is conducive to the formation of strong seedlings. Generally, the seeds are sown about 7 days before the rice is harvested, so as to avoid premature planting of rice straw causing damage to the seedlings. Do not blindly broadcast in due time. The symbiotic period is too long and it is easy to cause weak seedlings. The appropriate sowing time is 8 to 10 kilograms per acre, and the sowing of field plots will increase the seeding rate. Spraying seeds through a mist sprayer ensures uniform seeding. Before harvesting rice, about 15 kg of formula fertilizer per acre, about 10 kg of urea, to achieve early-onset strong seedlings. 3 leaf 1 combined with anterior three groove and mechanical excavation of field furrows, appropriately increasing the density of open trenches, uniform mud cover 1 to 2 cm thick. Early application of strong fertilizer, to achieve base (sets) fertilizer deficiency Miaofeibu, overwinter and return to the green period of lack of seedlings or power off the yellow field should be appropriate balance (relay) fertilizer to catch the Yellow Pond, promote balance, weight Stretching season booting fertilizer, generally about 15 kilograms of urea with urea, to pour 3 leaves and flag leaf phase twice better.
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