I don't know. Vegetable beans are usually replaced with crops such as oilseeds, barley and wheat, with an interval of one to three years。
I don't know. The mean length of the gutter is 1. 3 m, the length of the ditch is 18 cm and the range of the line is 33 x 21 cm. If the soil is fat and the fields are planted early, it will be rare. Two grains per den。
It's not like it's going on early or late. Vegetable seeds germinate at a minimum temperature of 3-4°c, and young seedlings are less resistant to cold, are too late to sow, have a bad pre-winter tree and have low yields. The planting is premature, pre-winter seedlings grow too high, and the winter is prone to freezing and yields are low. In the jianghan plain and the lower and lower part of the yangtze river, planting was generally carried out between late september and early october, before and after the drop of soybeans. In addition, where the seed seed is large, the seedlings need to absorb more moisture and sow at appropriate depths, generally 6-7 cm。
It's cold water stains. In low-temperature soil environments, the growth of the muscular root system and the reproduction of the root disease are affected and the upper part of the ground is poorly grown. In particular, stinging of the bouquets can cause large amounts of flowers to fall, and is prone to rotting roots and diseases。
Potassium deficiency due to phosphorus deficiency. Nitrogen required for muscular beans is met with nitrogen in the air fixed by its own root tumor, generally without the pursuit of nitrogen fertilization, but short phosphorus and potassium are small and have smaller branches, and the field population is seriously under-growing. At seeding, 667 square metres of grasswood ash was used for 100 - 200 kg or 20 - 30 kg of phosphorus fertilizer seed。
It's a waste. Soil sheeting and oxygen deficiency in the topsoil have a direct impact on the activity of the root tumor. Therefore, the soil, the sky and the seedlings should be cultivated twice before the spring festival. In mid-december, it usually had to do so once, then about six centimetres in mid-january. Peas can be tilled once in the early spring, if not before。
Seven is too strong. Vegetable beans thrive, leading to a high incidence of disease, a high incidence of leaves falling in the middle and lower parts and a high incidence of fruit falling out. In the event of the discovery of large and lopsided fields, swirling should be carried out, with the removal of the caps and the application of growth inhibitors。
I don't know. Leaf diseases such as red bean bean and rotorine diseases, such as incongruence of prevention and treatment, incongruity of the disease, severe reduction of production and even loss of harvest. In addition to agricultural measures, such as the extraction of ditches and drainage and the rational planting of soybeans, the prevention and treatment of the disease should be accompanied by timely spraying of the leaves to prevent the spread of the disease. In the early stages of the onset of the disease in mid-march, microbicides such as multibacterium, antigen, etc. Were sprayed 2-3 times at intervals of 5-7 days. After the first flower, before the seal, fattening with 0. 2% potassium phosphate or 0. 5% urea on the basis of the seedage can prolong the function of the leaf and increase the particle weight。
