In order to stably obtain high yields of more than 250 kilograms per mu, broad beans must create a long-lasting appearance of “previous year, flowering, flowering, and podpingâ€. The following techniques should be applied to the training in winter.
First, clear roots and seedlings, loose soil training. For the broad bean seedlings that have been sowed too deeply or are weakly grown, it is necessary to open the surrounding soil in a timely manner so that the leaf nodes of the broad beans are exposed to stimulate the early development of the broad beans. Before the arrival of the cold, combine the cultivating and loosening the soil.
Second, clearing the ditch against water stains, lightly applying seedlings. In the rainy areas in winter, we must dug the surrounding trenches, open the waist ditch early, and constantly clear the trenches, so that the ditch and the ditch can be connected smoothly, and the drainage can be smoothed to reduce the waterlogging of the submerged layer of water. In the case of drought, it is necessary to irrigate and drought, in general, the field water holding capacity is about 60%, and the broad bean belongs to the leguminous crop. However, before the rhizobium is formed, it is necessary to extract nutrients from the roots of the bean to increase the bacterial rest. Therefore, the base fertilizer is insufficient. Or late sowing of broad bean, 5-7.5 kg of ammonium bicarbonate per mu seedling period, prompting fast-leaf leaves and more rooting, so that the rhizobium can rapidly multiply and grow.
Third, the main stem is destroyed and the nutrient utilization rate is improved. This is an effective measure to control the main stem, keep branches, and promote control. For the broad-growing, weak-growing broad bean seedlings, only the main stem is topped; for the timely-seeded, normal-growing broad bean seedlings, when the seedling height is 16 cm and the leaves are 7-10 pieces, the whole main stem is cut off and grown. Wang's broad bean seedlings, before and after the "Winter Solstice", when the plant height has exceeded 20 cm, the main stem and some large branches are destroyed. For the seedlings that are too early to be planted and the seedlings are particularly prosperous, the main stem and the large branches should be cut. Off, control the top advantage. For thin and weak seedlings, you can play late or not.
Fourth, prevention and control of aphids to reduce disease. In the case of warm winter, there is often a locust hazard, so that the top leaf curls affect the growth, and the field can quickly kill the enemy, kill the net and other 1000 times liquid spray treatment. After the aphid is harmed, it can cause viral disease in the broad bean, which makes the plant dwarf or dead, so it is possible to reduce the occurrence of the spring broad bean virus disease by grasping the aphids in the early winter.
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