Oily sunflower planting method and application thereof in early rice-oily sunflower-rape triple-cropping system

Abstract

The invention relates to an oily sunflower planting method and application thereof in an early rice-oily sunflower-rape triple-cropping system. The oily sunflower planting method comprises the following steps: (1) selecting an improved variety, carrying out plowing, carrying out basal dressing, carrying out furrowing and compartment dividing, and carrying out pitting; (2) carrying out seed manure applying, carrying out sowing, and carrying out irrigation; and (3) carrying out field management and harvesting: carrying out resowing or replanting, and carrying out water drenching; carrying out final thinning, carrying out intertillage weeding, and covering compartment faces of oily sunflowers with rice straws; carrying out topdressing prior to budding of the oily sunflowers; carrying out moisture management after the budding of the oily sunflowers; carrying out disease and insect pest control; carrying out pollination or fertilization; and carrying out harvesting. The oily sunflower planting method disclosed by the invention can be applied to the early rice-oily sunflower-rape triple-cropping system. The oily sunflower planting method disclosed by the invention is high in oily sunflower yield, light in crop disease, insect and weed damage, low in chemical fertilizer consumption and low in cost, can be used for fertilizing soil fertility, improving soil and protecting cultivated land productivity, is water-saving and can be applied to early rice-oily sunflower-rape triple-cropping system planting. According to the application disclosed by the invention, through reasonably matching early rice-oily sunflower-rape varieties, the link-up of oily sunflower-rape crops for rotation is improved, and grain-oil double good harvest, i.e., 500kg of grains per mu and 200kg of oil per mu is achieved.

Description

technical field [0001] The invention relates to a planting method of oil sunflower and its application, in particular to a planting method of oil sunflower and its application in the triple cropping system of early rice-oil sunflower-rape. Background technique [0002] Oil sunflower is an important oil crop in my country, which has the characteristics of drought tolerance, poverty tolerance, strong adaptability, short growth period and high oil content. As a nutritional and health-care edible oil, sunflower oil contains high levels of oleic acid and linoleic acid, of which linoleic acid is an indispensable fatty acid for the human body. Oil sunflower has a short growth period and is widely planted in northern regions. In recent years, the middle and lower reaches of the Yangtze River have developed rapidly. The middle and lower reaches of the Yangtze River have a long frost-free period and sufficient heat. Oil sunflowers can be sown in spring or autumn. At present, oil sun...

AI Technical Summary

Problems solved by technology

[0003] CN101743842A discloses a planting method of double-season oil sunflower, which is to solve the problem of low land utilization rate in coastal saline-alkali areas of my country, make full use of heat resources and precipitation resources, improve land productivity and land multiple cropping index of saline-alkali land resources per unit area, and increase the number of farmers. Income, a double-season oil sunflower planting method constructed by means of accumulative temperature and suitable growth interval

my country is a country with a serious shortage of edible oil. Secondly, the per capita possession of water resources in my country is insufficient, the spatial distribution is uneven, and there are problems of low utilization and serious pollution.

[0008] In the double-cropping rice area in the middle and lower reaches of the Yangtze River, the planting method of early rice + late rice + rapeseed or early rice + late rice + green manure is mainly implemented in low-latitude areas with sufficient heat resources. This kind of two-water, one-dry and three-crop planting method can make full use of the local heat However, long-term use of this planting model will inevitably lead to the intensification of soil gleization and secondary gleization, increase the area of ​​low- and medium-yielding fields, affect the sustainable use of soil, and eventually lead to a decrease in the productivity of cultivated land; The mid-latitude zone mainly implements the planting method of early rice + late rice + winter slack or one-season mid-season rice + green manure. This kind of planting method does not fully utilize heat resources

At the same time, due to the frequent occurrence of summer drought, autumn drought or summer drought and autumn drought in the double-cropping rice area in the middle and lower reaches of the Yangtze River, the seasonal water resources of late rice are in short supply, and water shortages can easily lead to production reduction.