稻田土壤功能调控产品对晚稻生长和产量的影响

Effects of Soil Functional Regulation Product on Growth and Yield of Late-rice

通过田间试验，研究了多种稻田土壤功能调控产品配方对晚稻的生长及产量的影响。结果表明：（1）施用稻田功能调控产品有利于促进水稻生长发育，主要表现为新叶长而大，拔节期平均株高比对照高3．2-4．6cm；分蘖数增多0．4～1．4根，蔸，增幅3．0％-10．5％。（2）促进水稻根系生长，提高根系活力。分蘖期、孕穗期和齐穗期施用土壤功能调控产品的各处理根系活力平均分别比对照高出13．1、22．8和7．8μg,／h·gFW，增幅分别为12．6％、96．9％和138．3％。（3）有利于维持功能叶的正常生理生化功能，使水稻光合功能的衰退得以延缓，有效防止水稻早衰。功能叶片叶绿素含量SPAD平均值分蘖盛期，比对照增加5．8％～9．9％，孕穗期比对照增加4．9％-8．0％；显著降低初花期剑叶中的MDA（丙二醛）含量，降幅30．7％～68_3％。（4）改善水稻经济性并显著提高产量，比对照增产0．29—0．71t／hm^2，增幅5．1％～12．4％，施用4种稻田土壤功能调控产品均比对照极显著增产，仅施腐秆剂的处理比对照增产未达到显著水平。

The field experiments were conducted to study the effects of different function regulation products on growth and yield of late-rice. The results showed that （1） Using soil function regulation products can increase growth of rice, which mainly showed as the new leaves were long and large, the average plant height in tillering stage increased by 3.2- 4.6 cm than that of control, the tillering number increased by 0.4~1.4 shoots/plant, and the increasing amplitude was 3.0%-10.5%. （2） Using soil function regulation products can promote the development of rice roots and enhance the activity of roots. Applying soil function regulation products to rice at tillering stage, booting stage and full heading stage, the activity of roots can be enhanced by 13.1, 22.8 and 7.8 μg/h .gFW than that of control, respectively, and the increasing amplitude was 12.6%, 96.9% and 138.3%, respectively. （3） Using soil function regulation products is propitious to maintain the normal physiological and biochemical functions of leaf, thereby delaying the decline of photosynthetic function of rice and effective preventing the presenility of rice; the chlorophyll content （SPAD value） in function leaves at ti!lering stage average increased by 5.8%-9.9% than that of control, and the chlorophyll content （SPAD value） in function leaves at booting stage average increased by 4.9%-8.0% than that of control; it also can significantly decrease the MDA in flag leaf at initial flowering stage, and the decreasing amplitude was 30.7%-68.3%. （4） Using soil function regulation products can improve the economic characters of rice and enhance the yield significantly, which was increased by 0.29-0.71 t/hm^2 than that of control, and the increasing amplitude was 5.1%-12.4%; applying these four regulation matters all showed a significant yield-increasing effect than that of control, only the treatment of applying stem-rot agent was increased the yield a little than that of control but not reached significant yield-increasing level