Broad bean reinforced spring tube to make up for loss of freezing damage
The cold temperatures in Jiangsu Province in recent years have been rare, and the production of broad bean has been greatly affected. According to field surveys, the viability of fresh beans was 13.2%, the frostbite rate was 50%, and the rate of frozen leaves was 47%. Recently, the temperature rose and the weather turned fine. The autumn broad bean is in the period of turning green. It is a crucial period for accelerating spring growth, accelerating the growth of branches, and nurturing strong branches. It also compensates for lack of growth due to low temperature damage and waterlogging. A critical period. All localities should make full use of the fine weather to grasp the following field management measures to reduce the loss of broad bean production. Drainage wetland damage is a major obstacle to the high and stable yield of faba bean. The early low-temperature and rainy weather caused many fields to collapse and trenches to clog and have accumulated water. The poorly-drained fields of the broad-leaved faba bean roots have poor growth and reduced absorption and absorption capacity, which is not conducive to spring growth and makes up for the lack of early growth. It is also easy. Root diseases such as root rot occur during the period of scarring. Therefore, we must minimize the risk of wet stains, clean up the weather to clear the field and clean up the “three ditch†so that the ditch can communicate with each other, while deepening the trench outside the field. Grooves with unmatched plots should be raided to dig a ditch at intervals of 2 to 3 meters between rows of broad beans, with a ditch depth of about 30 cm. Accurate Fertilization For the seedlings with delayed growth and insufficient growth in the growth process of broad bean in the autumn, most of the fields should be fertilized once to meet the demand for nutrient growth of broad bean, increase the growth of broad bean and accelerate the growth process. Apply urea or diammonium phosphate 10 kg per acre. Most of the soil in the cropland after the successive cropping of weeding and weeding in the early stage of weeding was compacted and had poor ventilation. At the same time, as the temperature gradually increased, the weeds in the field grew rapidly and adversely affected the growth of broad bean. A ridge tillage weeding should be carried out in combination with a clean ditch and fertilization, and the roots of the soil in the open trench should be used. This measure can not only increase the oxygen content of the soil, maintain the root vigor of the faba bean, but also increase the ground temperature and promote the growth of faba bean. The pruning of fine pruned broad beans can reduce the consumption of ineffective nutrients, effectively promote reproductive growth, increase the rate of scabs per plant, and have the effect of increasing grain and increasing weight. Generally, 4 to 6 effective branches are kept per plant, and 25,000 to 28,000 branches are maintained per mu. Disease prevention and pest control As the growth and development of faba bean, the population structure continues to increase, and the types of pests and diseases are increased. The main diseases are red spot, brown spot, virus disease, rust, root rot, blight, downy mildew Etc. The main pests are aphids, broad bean elephants, leaf miners, and snails. Red spot, brown spot, etc. can be prevented by spraying 80% mancozeb WP with 100 g water per acre at the beginning of flowering period, and once every 7 days. Aphids can be treated with 20% imidacloprid wettable powder 5 to 10 grams per acre with water spray. Control of broad beans can be combined with disease prevention. In the second spraying prevention of red spot and brown spot, add 2.5% Lambda-cyhalothrin EC 25 to 40 ml per acre and control once every 7 days.
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