断根培土对花生生长发育和产量的影响

Effects of Root-cutting and Earth-up on the Growth and Yield of Peanut

为加快花生断根培土栽培技术的应用推广,在大田覆膜栽培条件下,设置了断根、培土、断根培土和不断根不培土4个处理,研究了断根培土对花生生长发育和产量的影响。结果表明:培土、断根、断根培土均降低了花生主茎高度和侧枝长度。培土增加茎叶干物重,提高花生总果针数、入土果针数、单株结果数和单株荚果干物重。断根由于伤害作用使茎叶干物重、总果针数、入土果针数、单株结果数和单株荚果干物重短时间内均出现降低现象,但之后能够通过补偿甚至超补偿作用而显著提高。断根培土则集成断根与培土之优点,而显著提高花生荚果产量。

In order to accelerate the application of peanut root-cutting and earth-up cultivation techniques, a field experiment under mulching was conducted to study the effects of root-cutting, earth-up and root-cutting plus earth-up on the growth and yield of peanut. The results showed that the root-cutting, earth-up, root-cut- ting plus earth-up decreased the main-stem height and the lateral-stem length of peanut. Earth-up treatment in- creased dry matter weight of leaves and steam, the pin number, buried fruit needle number, pod number and dry matter of pod per plant. Because of the damage effect, root-cutting decreased the dry matter weight of leaves and steam, the needle number and buried fruit needle number of peanut, pod number and dry matter of pod of each peanut within a short time and then significantly increased by compensation or even over compensation effect. Root-cutting plus earth-up treatment had the advantages of both root-cutting and earth-up treatment, which sig- nificantly increased the pod yield of peanut.