论文部分内容阅读
研究稻田人工生物圈的综合调控技术对水稻生长和稻田生态环境的影响结果表明，稻田人工生物圈中水稻的分蘖能力比传统稻作（对照）稍弱，但其成穗率提高１３．４％，结实率提高５．５％，产量提高５．７％，而且稻草和稻谷中的Ｎ、Ｐ、Ｋ、Ｍｇ含量比对照高。稻田人工生物圈的稻飞虱比对照减少４８．９％～６５．１％，枯心苗减少４０．０％～４６．２％，纹枯病减少４５．５％～５３．５％，稻田杂草的发生率减少９９．５％。稻田人工生物圈采用的宽窄行插秧方式，其宽行稻间透光率比对照提高５７．０％～５２１．５％，窄行的透光率比对照下降１６．３％～８０．５％，总的透光率比对照提高。在稻鱼共生期间，稻田人工生物圈鱼对红萍的摄食量为３１６２３ｋｇ／ｈｍ２。夏季稻田人工生物圈中鱼坑的最高水温比气温下降３～４℃，比田面水温下降０．９～２．６℃。试验证明稻田人工生物圈的综合调控技术有提高水稻产量和品质，及改善稻田生态环境的作用。
The results showed that the tillering ability of paddy field in artificial paddy field was weaker than that of traditional paddy rice (control), but the rate of spike of panicle increased by 13.4% The rate increased by 5.5% and the yield increased by 5.7%. The contents of N, P, K and Mg in straw and rice were higher than the control. Compared with the control, planthopper in rice paddy field decreased by 48.9% -65.1%, decreased by 40.0% -46.2% in the artificial biosphere, decreased by 45.5% -53.5% in the artificial biosphere of paddy field, The incidence of grass decreased by 99.5%. The width-width row transplanting method used in paddy field artificial biosphere showed that the light transmittance of wide-width rice increased 57.0% -52.1.5% compared with the control, and the light transmittance of narrow rows decreased by 16.3% -80.5% The total light transmittance is higher than the control. During the symbiosis of rice and fish, the feeding amount of Artificial Biosphere Fish to Rhodiola was 31,623 kg / hm2. The maximum water temperature of fish pits in summer paddy biosphere decreased by 3 ~ 4 ℃ than the temperature and 0.9 ~ 2.6 ℃ lower than the surface water temperature. The experiment proves that the comprehensive regulation technology of paddy field artificial biosphere has the functions of improving the yield and quality of rice and improving the ecological environment of paddy field.