Mung beans are self-pollination crops that can be field-mixed. The seeds left by the field must be kept single, single, and single. Its yield increase effect is very impressive.
In the past, mungbean production was not valued by people, and there was very few habits of selecting seeds for production. Even if some fine varieties were introduced and selected, the degree of miscellaneousness and degradation were different, resulting in low yield. If it can be selected in the field, it can increase production by 12-20%.
First, determine the best varieties suitable for local planting, and select plants with the characteristics and characteristics of the varieties. In particular, varieties that have been reintroduced in various places in recent years, such as “Large Green†and “Green No. 1â€, should maintain their purity. Its biological characteristics are: "Large green budgerigar", plants are upright, indeterminately knotted habits, many branches, green leaves, yellow flowers, short cylindrical grains, bright green color, large and neat grain, shiny. Plant height 43.7-80.3 centimeters, pods mature dark brown, pods difficult to crack. Plants are lush, with thick stems, large leaves, and strong resistance to stress.
"Zhongqing No. 1" has a 55-centimeter plant height, 3-5 branches, thick stalks, and a compact plant type. The plant is still green when mature, and the blackish black is slightly curved and flattened, with a length of about 10 cm. According to the above characteristics, observations are made on a ridge-by-ridge basis, and several other varieties that have been mixed in are selected and collected several times. Then, a typical plant with strong typical characteristics is planted as required.
Second, the selection time. The selection will be carried out in the field where the leaves are still green and the pods are about to mature. According to the plant's appearance, good individuals with good comprehensive traits were selected.
Third, select the standard. The selection of a single plant should be based on the following four criteria: First, the plant height is moderate or boat dwarf, the stem is tight and not lodging; Second, the selection of branches, internodes, knot dense, not as early as threshing, fried pods; The third is long pods, long knots, and low pods; the fourth is plants that are adapted to local conditions, robust plants, strong resistance to disease and insect pests, moderate maturity, early flowering, rapid maturity, and no symptoms of premature aging.
Fourth, choose the method. Individuals selected based on the above criteria should be tagged or marked in the field. The number of plant strains to be retained will depend on the actual amount of seed to be produced next year. Generally, 20-30% of the total number of strains will be selected. When the whole plant matures, it is first necessary to individually harvest the marked plants and carry out separate drying. A comprehensive performance comparison was performed before threshing, and the small cockroaches, insect cockroaches and cockroaches were removed. Try to pick out the seeds that do not have the characteristics of the varieties and bag them. When storing and keeping, never use plastic bags to plant seeds. When using sacks or cloth bags to leave the floor, leave the wall and put it in a ventilated, dry, cool, low-temperature warehouse for next year sowing.
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