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以湖北省崇阳县原种场试验田为研究对象探讨秸秆不同还田量对后茬中稻生长产量及发育影响。水稻品种为广两优香66,试验田试验共设3个处理对照组(NPK,无秸秆还田),秸秆半量还田(处理A),秸秆全量还田(处理B),对比分析三组后茬中稻生长产量及发育期干物质积累量的变化。结果显示供试肥料品种相同情况下,后茬水稻生长前期,秸秆还田量越大,分蘖起步越迟,叶面积指数、茎蘖数、干物质积累量及有效穗数越低,而后茬水稻生长中后期趋势相反,秸秆还田量越大,每穗粒数、千粒质量、结实率、水稻产量越高。
A study was conducted in the experimental field of original seedlings in Chongyang County, Hubei Province to investigate the effects of different straw returning amounts on the growth and development of middle-late rice cultivars. There were three treatment groups (NPK, no straw returning), half straw returning (treatment A) and straw returning to soil (treatment B) in the experimental field. After comparative analysis of the three groups Changes of Growth and Yield of Dry Matter and Dry Matter Accumulation in Developing. The results showed that under the same conditions of the tested fertilizers, the amount of straw returned to paddy, the later the tiller started, the lower the leaf area index, the number of stems and tillers, the dry matter accumulation and the effective panicle, In the late growth stage, the more straw returning, the number of grains per spike, the quality of 1000 grains, the seed setting rate, the higher the rice yield.