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箭筈豌豆是一种耐迟播、早发、好留种的绿肥。由于它春性强,因而抗寒性不及光叶苕子。从我场近几年的种植情况看,幼苗在越冬期均有不同程度的冻害,一般年份死株率达15—20％,分枝死亡率达50—60％。严重年份死株率达40—50％,分枝死亡率达80—90％。为使箭筈豌豆能安全越冬,我们采用开沟起垄播种,效果良好。开沟的沟距为35厘米,沟深15厘米。先将种子播于沟底,然后覆土。沟垄分东西向和南北向两个处理,以平地播种作对照。于10月28
Arrowheads peas is a late broadcast sowing, early hair, good to stay kind of green manure. Because of its strong spring, cold hardiness and less than Ye Guangzi. According to the planting situation in recent years in our field, seedlings have varying degrees of frost damage during wintering. The death rate in ordinary years is 15-20% and the death rate in branches is 50-60%. Serious years dead strain rate of 40-50%, the branch mortality rate of 80-90%. In order to make the arrowhead peas safe and wintering, we use the ditching and sowing to sow seeds and the effect is good. Ditch ditch is 35 cm, ditch 15 cm deep. Sow the seeds at the bottom of the ditch first and then cover the soil. Ditch ridge points east-west and north-south to the two to sowing for control. On October 28