论文部分内容阅读
杂交高粱幼苗根茎短,播种过深影响全苗。群众中也有“杂交高梁播深一寸全苗、二寸短苗、三寸无苗”的说法。一般土壤水分在9-11％时才能顺利出土,如0-5厘米土壤水分小于6％,高粱就出不好苗,苗势不壮,生长缓慢,给干旱地区和水地区一次播种保全苗带来困难。为了解决这个问题,从1979年开始经过4年连续选育,已选出在土壤干旱条件下,深播3寸而且可以保证全苗的长根茎晋杂5号高粱。
Hybrid sorghum seedlings short roots, sowing too deep affect the whole plant. The masses also have “hybrid sorghum sowing one inch whole seedlings, two inch short seedlings, three inches without seedlings,” saying. General soil moisture in the 9-11% of the time can be successfully unearthed, such as 0-5 cm soil moisture is less than 6%, sorghum is not good seedlings, seedling strength is not strong, slow growth, to arid areas and water once sown seedlings Difficult to come. In order to solve this problem, continuous breeding has been carried out for four years since 1979, and 3-inch deep-seeding under the soil drought condition has been selected to ensure that the whole rhizome stems with 5 # sorghum.