论文部分内容阅读
(一)小麦播种后,种粒上微生物的含量不断地增加,胚乳转化将近结束期的含量超过胚乳转化期的含量,半粒种粒上的含量远远超过整粒种粒上的含量。这种规律表现特别明显的是真菌,萤光菌类和能在淀粉铵培养基上发育的细菌。 (二)用半粒小麦作为播种材料,由于胚乳总聍量的减少和招致微生物的大量增殖,引起微生物与幼苗竞争营养物质,不利于幼苗的生长发育。 (三)由于土壤微生物的种类复杂,能水解淀粉的菌类很多,赛力散拌种虽然能抑制一部分微生物,特别是真菌的发育繁殖,但不能使微生物的总数降低,因而不能解决微生物与幼苗竞争营养物质的问题。 (四)测定了135株纯培养的土壤细菌,其中40%具有水解淀粉的能力。120株当地真菌优势类羣——青霉和曲霉的测定结果,显示水解淀粉能力的菌株占70.8%。
(A) After sowing, the content of microorganisms on the seeds continuously increases, the content of endosperm transformation near the end of the period exceeds the content of the endosperm transformation period, and the content on the half grain is far more than that on the whole grain. Particularly noticeable by this pattern are fungi, luminescent fungi and bacteria that can develop on amylammonium media. (B) with half a grain of wheat as sowing material, due to the reduction of total endosperm volume and lead to a large number of microbial proliferation, causing microbial competition with seedlings nutrients, is not conducive to seedling growth and development. (C) Due to the complex types of soil microorganisms, many strains of starch can be hydrolyzed, although salal mixed seed can inhibit the growth of some microorganisms, especially fungi, but can not reduce the total number of microorganisms, which can not solve the micro-organisms and seedlings Competition for nutrients. (D) Determination of 135 strains of pure cultured soil bacteria, of which 40% have the ability to hydrolyze starch. 120 strains of local fungal dominant groups - Penicillium and Aspergillus determination results show that the ability to hydrolyze starch strains accounted for 70.8%.