Practical Study on Non-Tilled Farming in Paddy Field of Heavy Clay Soil

八郎田圩田重粘土的免耕效果主要表现在：（1）节省劳动力和成本免耕减少了耕作和搅泥所需的劳动力和能源。因此，这有助于降低水稻成型的成本，并在农民忙碌其他工作时更好地分配劳动力。(2)通过地下水位下降提高渗透性和承载力由于植物根系的孔隙不被破坏并保留在土壤中，地下水位下降，稻田排水得到改善。随着承载能力的提高，联合收割机的管理操作和收获工作变得更加容易。(3)土壤管理技术的建立与管道排水功能的改善免耕农业是一种有效的土壤管理技术，因为它有助于水稻根系的生长，改善重粘土壤的物理性质。FUT ...更多信息 因此，如果能发明一种方法，将侧沟与植物根孔（植物根形成的大孔）连接起来，就能改善管道排水的功能，扩大其效果。(4)改重粘土稻田为多用途稻田，排水条件的改善，使重粘土稻田最有可能改多用途稻田，这是建立轮作制度所必需的，因为它为复种水稻引进小麦和大豆创造了有利条件。(5)发展环保型农业可以预见，免耕成型将有助于环保型农业的发展，首先是因为它可以摆脱因携带肥料和泥水而造成的水体污染，其次是因为它可以减少切割秸秆混入耕层产生的甲烷气体，第三，因为它保存了土壤微生物和微观土壤动物的生物圈。(6)稳定产量免耕栽培在水稻栽培期间，通过植物根系的孔隙向土壤层提供充足的氧气，使水稻根系在收获前保持活跃，使水稻在生长的最后阶段能够特别生长，从而保持产量稳定。少

The effects by non-tilled farming in the heavy clay soil of paddy field in Hachiro-gata Polder are summarized as follows :(1) Labor and cost savingNon-tilled farming reduces labor and energy necessary for cultivation and puddling. This consequently, contributes to cost reduction in rice forming and to a better distribution of labor during that period when farmers are busy with other work.(2) Improvement of permeability and bearing capacity by the descent down of underground water levelAs the pores of plant roots are not destroyed and preserved in the soil, the underground water level is descended down and paddy field drainage is improved. With improvement of bearing capacity, management operation and harvesting work by combine become easier.(3) Establishment of soil management technique and improvement of pipe drainage functionNon-tilled farming can be an effective soil management technique, because it helps plant roots of rice to improve the physical properties of heavy clay soil. Fut … More her, if we could invent methods to connect lateral drains with pores of plant roots (macropore formed by plant roots), it could improve the function of pipe drainage and extend its effects.(4) Change paddy field of heavy clay soil into multipurpose paddy fieldImprovement of drainage makes it most probable to change paddy field of heavy clay soil into multipurpose paddy field which is necessary to establish crop rotation system, because it forms favorable conditions to introduce wheat and soybean cropping as second cropping of rice.(5) Development of agriculture of environmental conservation typeWe can expect non-tilled forming will contribute to the development of agriculture of environmental conservation type, firstly because it can get rid of muddling which often causes water pollution by carrying off fertilizer and muddy water, secondly because it can reduce the amount of methanegas which is generated by mixing cut straw into the plow layer, and thirdly because it conserves biological spheres of soil microorganisms and microscopic soil animals.(6) Stabilization of yieldNon-tilled forming keeps oxygen supply to soil layers through pores of plant roots sufficient during the rice cultivation period, so that rice roots, which remain active until the harvest, enables rice to grow specially at the last period of the growth, and consequently, to keep the yield stable. Less