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经过近3年来所内试验和1980年在部分县农科所中间试验,证明大豆穴播栽培有显著的增产效果,一般增产8—18％。据1979年在所内试验,采用东农72—806品种,每平方米25株,每穴3株的亩产419斤,双条播的374斤,穴播的比条播的增产12％。据1980年在本省南部的宾县农科所试验,采用黑农26号品种,每平米28株,每穴3株的比双条播的增产14.4％。另据1980年本省北部的依安县农科所用克交69—053品种试验,每平方米25株,穴4株的比双条播的增产12.1％。愈是高肥足水的地块,大豆穴播的增产效果愈明显。大豆穴播增产的原因主要是:虽然穴播的株距变小,对前期的幼苗生长稍有不利影响,但在大豆的生育后期,由于穴播的穴距大,可减轻大豆的郁蔽,延长封行期,可晚封行7—10天,通风透光好,因而产量高。
After nearly three years of in-house testing and 1980 experiments conducted in some county agricultural institutes, it proved that soybean planting has a significant yield-increasing effect, generally increasing yield by 8-18%. According to the experiment conducted in 1979, Dongnong 72-806 varieties were used, with 25 plants per square meter and 419 kg per mu per plant in 3 plants, 374 kg for double sowing and 12% more yielding than sowing. According to the experiments carried out in Binxian Agricultural Science Institute in the southern part of the province in 1980, 28 varieties per square meter were used to increase the yield of three strains per plant compared with double sowing by 14.4%. In addition, according to the test conducted by Agian 69-053, which was used by AgroSciences in Yi’an County in northern province in 1980, 25 plants per square meter and 4 plants per hole increased yield by 12.1% compared with that of double sowing plants. The more high fat enough water plots, soybean planting yield more obvious effect. The main reasons for the increase of soybean planting are as follows: although the spacing of planting is smaller, it has a slight adverse effect on the growth of early seedlings. However, in the late growth stage of soybean, the hole spacing of planting is large, , Can be late seal line 7-10 days, good ventilation, and thus high yield.